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Researchers Uncover 11 Security Flaws in GE HealthCare Ultrasound Machines

Security researchers have disclosed almost a dozen security flaws impacting the GE HealthCare Vivid Ultrasound product family that could be exploited by malicious actors to tamper with patient data and even install ransomware under certain circumstances. "The impacts enabled by these flaws are manifold: from the implant of ransomware on the ultrasound machine to the access and manipulation of

Cybercriminals Exploiting Microsoft’s Quick Assist Feature in Ransomware Attacks

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Ongoing Campaign Bombards Enterprises with Spam Emails and Phone Calls

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How Did Authorities Identify the Alleged Lockbit Boss?

Last week, the United States joined the U.K. and Australia in sanctioning and charging a Russian man named Dmitry Yuryevich Khoroshev as the leader of the infamous LockBit ransomware group. LockBit’s leader “LockBitSupp” claims the feds named the wrong guy, saying the charges don’t explain how they connected him to Khoroshev. This post examines the activities of Khoroshev’s many alter egos on the cybercrime forums, and tracks the career of a gifted malware author who has written and sold malicious code for the past 14 years.

Dmitry Yuryevich Khoroshev. Image: treasury.gov.

On May 7, the U.S. Department of Justice indicted Khoroshev on 26 criminal counts, including extortion, wire fraud, and conspiracy. The government alleges Khoroshev created, sold and used the LockBit ransomware strain to personally extort more than $100 million from hundreds of victim organizations, and that LockBit as a group extorted roughly half a billion dollars over four years.

Federal investigators say Khoroshev ran LockBit as a “ransomware-as-a-service” operation, wherein he kept 20 percent of any ransom amount paid by a victim organization infected with his code, with the remaining 80 percent of the payment going to LockBit affiliates responsible for spreading the malware.

Financial sanctions levied against Khoroshev by the U.S. Department of the Treasury listed his known email and street address (in Voronezh, in southwest Russia), passport number, and even his tax ID number (hello, Russian tax authorities). The Treasury filing says Khoroshev used the emails sitedev5@yandex.ru, and khoroshev1@icloud.com.

According to DomainTools.com, the address sitedev5@yandex.ru was used to register at least six domains, including a Russian business registered in Khoroshev’s name called tkaner.com, which is a blog about clothing and fabrics.

A search at the breach-tracking service Constella Intelligence on the phone number in Tkaner’s registration records  — 7.9521020220 — brings up multiple official Russian government documents listing the number’s owner as Dmitri Yurievich Khoroshev.

Another domain registered to that phone number was stairwell[.]ru, which at one point advertised the sale of wooden staircases. Constella finds that the email addresses webmaster@stairwell.ru and admin@stairwell.ru used the password 225948.

DomainTools reports that stairwell.ru for several years included the registrant’s name as “Dmitrij Ju Horoshev,” and the email address pin@darktower.su. According to Constella, this email address was used in 2010 to register an account for a Dmitry Yurievich Khoroshev from Voronezh, Russia at the hosting provider firstvds.ru.

Image: Shutterstock.

Cyber intelligence firm Intel 471 finds that pin@darktower.ru was used by a Russian-speaking member called Pin on the English-language cybercrime forum Opensc. Pin was active on Opensc around March 2012, and authored 13 posts that mostly concerned data encryption issues, or how to fix bugs in code.

Other posts concerned custom code Pin claimed to have written that would bypass memory protections on Windows XP and Windows 7 systems, and inject malware into memory space normally allocated to trusted applications on a Windows machine.

Pin also was active at that same time on the Russian-language security forum Antichat, where they told fellow forum members to contact them at the ICQ instant messenger number 669316.

NEROWOLFE

A search on the ICQ number 669316 at Intel 471 shows that in April 2011, a user by the name NeroWolfe joined the Russian cybercrime forum Zloy using the email address d.horoshev@gmail.com, and from an Internet address in Voronezh, RU.

Constella finds the same password tied to webmaster@stairwell.ru (225948) was used by the email address 3k@xakep.ru, which Intel 471 says was registered to more than a dozen NeroWolfe accounts across just as many Russian cybercrime forums between 2011 and 2015.

NeroWolfe’s introductory post to the forum Verified in Oct. 2011 said he was a system administrator and C++ coder.

“Installing SpyEYE, ZeuS, any DDoS and spam admin panels,” NeroWolfe wrote. This user said they specialize in developing malware, creating computer worms, and crafting new ways to hijack Web browsers.

“I can provide my portfolio on request,” NeroWolfe wrote. “P.S. I don’t modify someone else’s code or work with someone else’s frameworks.”

In April 2013, NeroWolfe wrote in a private message to another Verified forum user that he was selling a malware “loader” program that could bypass all of the security protections on Windows XP and Windows 7.

“The access to the network is slightly restricted,” NeroWolfe said of the loader, which he was selling for $5,000. “You won’t manage to bind a port. However, it’s quite possible to send data. The code is written in C.”

In an October 2013 discussion on the cybercrime forum Exploit, NeroWolfe weighed in on the karmic ramifications of ransomware. At the time, ransomware-as-a-service didn’t exist yet, and many members of Exploit were still making good money from “lockers,” relatively crude programs that locked the user out of their system until they agreed to make a small payment (usually a few hundred dollars via prepaid Green Dot cards).

Lockers, which presaged the coming ransomware scourge, were generally viewed by the Russian-speaking cybercrime forums as harmless moneymaking opportunities, because they usually didn’t seek to harm the host computer or endanger files on the system. Also, there were still plenty of locker programs that aspiring cybercriminals could either buy or rent to make a steady income.

NeroWolfe reminded forum denizens that they were just as vulnerable to ransomware attacks as their would-be victims, and that what goes around comes around.

“Guys, do you have a conscience?,” NeroWolfe wrote. “Okay, lockers, network gopstop aka business in Russian. The last thing was always squeezed out of the suckers. But encoders, no one is protected from them, including the local audience.”

If Khoroshev was ever worried that someone outside of Russia might be able to connect his early hacker handles to his real life persona, that’s not clear from reviewing his history online. In fact, the same email address tied to so many of NeroWolfe’s accounts on the forums — 3k@xakep.ru — was used in 2011 to create an account for a Dmitry Yurevich Khoroshev on the Russian social media network Vkontakte.

NeroWolfe seems to have abandoned all of his forum accounts sometime in 2016. In November 2016, an exploit[.]ru member filed an official complaint against NeroWolfe, saying NeroWolfe had been paid $2,000 to produce custom code but never finished the project and vanished.

It’s unclear what happened to NeroWolfe or to Khoroshev during this time. Maybe he got arrested, or some close associates did. Perhaps he just decided it was time to lay low and hit the reset on his operational security efforts, given his past failures in this regard. It’s also possible NeroWolfe landed a real job somewhere for a few years, fathered a child, and/or had to put his cybercrime career on hold.

PUTINKRAB

Or perhaps Khoroshev saw the coming ransomware industry for the endless pot of gold that it was about to become, and then dedicated himself to working on custom ransomware code. That’s what the government believes.

The indictment against Khoroshev says he used the hacker nickname Putinkrab, and Intel 471 says this corresponds to a username that was first registered across three major Russian cybercrime forums in early 2019.

KrebsOnSecurity could find no obvious connections between Putinkrab and any of Khoroshev’s older identities. However, if Putinkrab was Khoroshev, he would have learned from his past mistakes and started fresh with a new identity (which he did). But also, it is likely the government hasn’t shared all of the intelligence it has collected against him (more on that in a bit).

Putinkrab’s first posts on the Russian cybercrime forums XSS, Exploit and UFOLabs saw this user selling ransomware source code written in C.

A machine-translated ad for ransomware source code from Putinkrab on the Russian language cybercrime forum UFOlabs in 2019. Image: Ke-la.com.

In April 2019, Putkinkrab offered an affiliate program that would run on top of his custom-made ransomware code.

“I want to work for a share of the ransoms: 20/80,” Putinkrab wrote on Exploit. “20 percent is my percentage for the work, you get 80% of the ransoms. The percentage can be reduced up to 10/90 if the volumes are good. But now, temporarily, until the service is fully automated, we are working using a different algorithm.”

Throughout the summer of 2019, Putinkrab posted multiple updates to Exploit about new features being added to his ransomware strain, as well as novel evasion techniques to avoid detection by security tools. He also told forum members he was looking for investors for a new ransomware project based on his code.

In response to an Exploit member who complained that the security industry was making it harder to profit from ransomware, Putinkrab said that was because so many cybercriminals were relying on crappy ransomware code.

“The vast majority of top antiviruses have acquired behavioral analysis, which blocks 95% of crypto-lockers at their root,” Putinkrab wrote. “Cryptolockers made a lot of noise in the press, but lazy system administrators don’t make backups after that. The vast majority of cryptolockers are written by people who have little understanding of cryptography. Therefore, decryptors appear on the Internet, and with them the hope that files can be decrypted without paying a ransom. They just sit and wait. Contact with the owner of the key is lost over time.”

Putinkrab said he had every confidence his ransomware code was a game-changer, and a huge money machine.

“The game is just gaining momentum,” Putinkrab wrote. “Weak players lose and are eliminated.”

The rest of his response was structured like a poem:

“In this world, the strongest survive.
Our life is just a struggle.
The winner will be the smartest,
Who has his head on his shoulders.”

Putinkrab’s final post came on August 23, 2019. The Justice Department says the LockBit ransomware affiliate program was officially launched five months later. From there on out, the government says, Khoroshev adopted the persona of LockBitSupp. In his introductory post on Exploit, LockBit’s mastermind said the ransomware strain had been in development since September 2019.

The original LockBit malware was written in C (a language that NeroWolfe excelled at). Here’s the original description of LockBit, from its maker:

“The software is written in C and Assembler; encryption is performed through the I/O Completion Port; there is a port scanning local networks and an option to find all DFS, SMB, WebDAV network shares, an admin panel in Tor, automatic test decryption; a decryption tool is provided; there is a chat with Push notifications, a Jabber bot that forwards correspondence and an option to terminate services/processes in line which prevent the ransomware from opening files at a certain moment. The ransomware sets file permissions and removes blocking attributes, deletes shadow copies, clears logs and mounts hidden partitions; there is an option to drag-and-drop files/folders and a console/hidden mode. The ransomware encrypts files in parts in various places: the larger the file size, the more parts there are. The algorithms used are AES + RSA.

You are the one who determines the ransom amount after communicating with the victim. The ransom paid in any currency that suits you will be transferred to your wallets. The Jabber bot serves as an admin panel and is used for banning, providing decryption tools, chatting – Jabber is used for absolutely everything.”

CONCLUSION

Does the above timeline prove that NeroWolfe/Khoroshev is LockBitSupp? No. However, it does indicate Khoroshev was for many years deeply invested in countless schemes involving botnets, stolen data, and malware he wrote that others used to great effect. NeroWolfe’s many private messages from fellow forum members confirm this.

NeroWolfe’s specialty was creating custom code that employed novel stealth and evasion techniques, and he was always quick to volunteer his services on the forums whenever anyone was looking help on a malware project that called for a strong C or C++ programmer.

Someone with those qualifications — as well as demonstrated mastery of data encryption and decryption techniques — would have been in great demand by the ransomware-as-a-service industry that took off at around the same time NeroWolfe vanished from the forums.

Someone like that who is near or at the top of their game vis-a-vis their peers does not simply walk away from that level of influence, community status, and potential income stream unless forced to do so by circumstances beyond their immediate control.

It’s important to note that Putinkrab didn’t just materialize out of thin air in 2019 — suddenly endowed with knowledge about how to write advanced, stealthy ransomware strains. That knowledge clearly came from someone who’d already had years of experience building and deploying ransomware strains against real-life victim organizations.

Thus, whoever Putinkrab was before they adopted that moniker, it’s a safe bet they were involved in the development and use of earlier, highly successful ransomware strains. One strong possible candidate is Cerber ransomware, the most popular and effective affiliate program operating between early 2016 and mid-2017. Cerber thrived because it emerged as an early mover in the market for ransomware-as-a-service offerings.

In February 2024, the FBI seized LockBit’s cybercrime infrastructure on the dark web, following an apparently lengthy infiltration of the group’s operations. The United States has already indicted and sanctioned at least five other alleged LockBit ringleaders or affiliates, so presumably the feds have been able to draw additional resources from those investigations.

Also, it seems likely that the three national intelligence agencies involved in bringing these charges are not showing all of their cards. For example, the Treasury documents on Khoroshev mention a single cryptocurrency address, and yet experts interviewed for this story say there are no obvious clues connecting this address to Khoroshev or Putinkrab.

But given that LockBitSupp has been actively involved in Lockbit ransomware attacks against organizations for four years now, the government almost certainly has an extensive list of the LockBit leader’s various cryptocurrency addresses — and probably even his bank accounts in Russia. And no doubt the money trail from some of those transactions was traceable to its ultimate beneficiary (or close enough).

Not long after Khoroshev was charged as the leader of LockBit, a number of open-source intelligence accounts on Telegram began extending the information released by the Treasury Department. Within hours, these sleuths had unearthed more than a dozen credit card accounts used by Khoroshev over the past decade, as well as his various bank account numbers in Russia.

The point is, this post is based on data that’s available to and verifiable by KrebsOnSecurity. Woodward & Bernstein’s source in the Watergate investigation — Deep Throat — famously told the two reporters to “follow the money.” This is always excellent advice. But these days, that can be a lot easier said than done — especially with people who a) do not wish to be found, and b) don’t exactly file annual reports.

Black Basta Ransomware Strikes 500+ Entities Across North America, Europe, and Australia

The Black Basta ransomware-as-a-service (RaaS) operation has targeted more than 500 private industry and critical infrastructure entities in North America, Europe, and Australia since its emergence in April 2022. In a joint advisory published by the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), the Department of Health and Human Services (HHS

FIN7 Hacker Group Leverages Malicious Google Ads to Deliver NetSupport RAT

The financially motivated threat actor known as FIN7 has been observed leveraging malicious Google ads spoofing legitimate brands as a means to deliver MSIX installers that culminate in the deployment of NetSupport RAT. "The threat actors used malicious websites to impersonate well-known brands, including AnyDesk, WinSCP, BlackRock, Asana, Concur, The Wall

Russian Hacker Dmitry Khoroshev Unmasked as LockBit Ransomware Administrator

The U.K. National Crime Agency (NCA) has unmasked the administrator and developer of the LockBit ransomware operation, revealing it to be a 31-year-old Russian national named Dmitry Yuryevich Khoroshev. In addition, Khoroshev has been sanctioned by the U.K. Foreign, Commonwealth and Development Office (FCD), the U.S. Department of the Treasury’s Office of Foreign Assets Control (

Russian Operator of BTC-e Crypto Exchange Pleads Guilty to Money Laundering

A Russian operator of a now-dismantled BTC-e cryptocurrency exchange has pleaded guilty to money laundering charges from 2011 to 2017. Alexander Vinnik, 44, was charged in January 2017 and taken into custody in Greece in July 2017. He was subsequently extradited to the U.S. in August 2022. Vinnik and his co-conspirators have been accused of owning and managing

C2-Cloud - The C2 Cloud Is A Robust Web-Based C2 Framework, Designed To Simplify The Life Of Penetration Testers

By: Zion3R


The C2 Cloud is a robust web-based C2 framework, designed to simplify the life of penetration testers. It allows easy access to compromised backdoors, just like accessing an EC2 instance in the AWS cloud. It can manage several simultaneous backdoor sessions with a user-friendly interface.

C2 Cloud is open source. Security analysts can confidently perform simulations, gaining valuable experience and contributing to the proactive defense posture of their organizations.

Reverse shells support:

  1. Reverse TCP
  2. Reverse HTTP
  3. Reverse HTTPS (configure it behind an LB)
  4. Telegram C2

Demo

C2 Cloud walkthrough: https://youtu.be/hrHT_RDcGj8
Ransomware simulation using C2 Cloud: https://youtu.be/LKaCDmLAyvM
Telegram C2: https://youtu.be/WLQtF4hbCKk

Key Features

🔒 Anywhere Access: Reach the C2 Cloud from any location.
🔄 Multiple Backdoor Sessions: Manage and support multiple sessions effortlessly.
🖱️ One-Click Backdoor Access: Seamlessly navigate to backdoors with a simple click.
📜 Session History Maintenance: Track and retain complete command and response history for comprehensive analysis.

Tech Stack

🛠️ Flask: Serving web and API traffic, facilitating reverse HTTP(s) requests.
🔗 TCP Socket: Serving reverse TCP requests for enhanced functionality.
🌐 Nginx: Effortlessly routing traffic between web and backend systems.
📨 Redis PubSub: Serving as a robust message broker for seamless communication.
🚀 Websockets: Delivering real-time updates to browser clients for enhanced user experience.
💾 Postgres DB: Ensuring persistent storage for seamless continuity.

Architecture

Application setup

  • Management port: 9000
  • Reversse HTTP port: 8000
  • Reverse TCP port: 8888

  • Clone the repo

  • Optional: Update chait_id, bot_token in c2-telegram/config.yml
  • Execute docker-compose up -d to start the containers Note: The c2-api service will not start up until the database is initialized. If you receive 500 errors, please try after some time.

Credits

Inspired by Villain, a CLI-based C2 developed by Panagiotis Chartas.

License

Distributed under the MIT License. See LICENSE for more information.

Contact



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There are indications that U.S. healthcare giant Change Healthcare has made a $22 million extortion payment to the infamous BlackCat ransomware group (a.k.a. “ALPHV“) as the company struggles to bring services back online amid a cyberattack that has disrupted prescription drug services nationwide for weeks. However, the cybercriminal who claims to have given BlackCat access to Change’s network says the crime gang cheated them out of their share of the ransom, and that they still have the sensitive data Change reportedly paid the group to destroy. Meanwhile, the affiliate’s disclosure appears to have prompted BlackCat to cease operations entirely.

Image: Varonis.

In the third week of February, a cyber intrusion at Change Healthcare began shutting down important healthcare services as company systems were taken offline. It soon emerged that BlackCat was behind the attack, which has disrupted the delivery of prescription drugs for hospitals and pharmacies nationwide for nearly two weeks.

On March 1, a cryptocurrency address that security researchers had already mapped to BlackCat received a single transaction worth approximately $22 million. On March 3, a BlackCat affiliate posted a complaint to the exclusive Russian-language ransomware forum Ramp saying that Change Healthcare had paid a $22 million ransom for a decryption key, and to prevent four terabytes of stolen data from being published online.

The affiliate claimed BlackCat/ALPHV took the $22 million payment but never paid him his percentage of the ransom. BlackCat is known as a “ransomware-as-service” collective, meaning they rely on freelancers or affiliates to infect new networks with their ransomware. And those affiliates in turn earn commissions ranging from 60 to 90 percent of any ransom amount paid.

“But after receiving the payment ALPHV team decide to suspend our account and keep lying and delaying when we contacted ALPHV admin,” the affiliate “Notchy” wrote. “Sadly for Change Healthcare, their data [is] still with us.”

Change Healthcare has neither confirmed nor denied paying, and has responded to multiple media outlets with a similar non-denial statement — that the company is focused on its investigation and on restoring services.

Assuming Change Healthcare did pay to keep their data from being published, that strategy seems to have gone awry: Notchy said the list of affected Change Healthcare partners they’d stolen sensitive data from included Medicare and a host of other major insurance and pharmacy networks.

On the bright side, Notchy’s complaint seems to have been the final nail in the coffin for the BlackCat ransomware group, which was infiltrated by the FBI and foreign law enforcement partners in late December 2023. As part of that action, the government seized the BlackCat website and released a decryption tool to help victims recover their systems.

BlackCat responded by re-forming, and increasing affiliate commissions to as much as 90 percent. The ransomware group also declared it was formally removing any restrictions or discouragement against targeting hospitals and healthcare providers.

However, instead of responding that they would compensate and placate Notchy, a representative for BlackCat said today the group was shutting down and that it had already found a buyer for its ransomware source code.

The seizure notice now displayed on the BlackCat darknet website.

“There’s no sense in making excuses,” wrote the RAMP member “Ransom.” “Yes, we knew about the problem, and we were trying to solve it. We told the affiliate to wait. We could send you our private chat logs where we are shocked by everything that’s happening and are trying to solve the issue with the transactions by using a higher fee, but there’s no sense in doing that because we decided to fully close the project. We can officially state that we got screwed by the feds.”

BlackCat’s website now features a seizure notice from the FBI, but several researchers noted that this image seems to have been merely cut and pasted from the notice the FBI left in its December raid of BlackCat’s network. The FBI has not responded to requests for comment.

Fabian Wosar, head of ransomware research at the security firm Emsisoft, said it appears BlackCat leaders are trying to pull an “exit scam” on affiliates by withholding many ransomware payment commissions at once and shutting down the service.

“ALPHV/BlackCat did not get seized,” Wosar wrote on Twitter/X today. “They are exit scamming their affiliates. It is blatantly obvious when you check the source code of their new takedown notice.”

Dmitry Smilyanets, a researcher for the security firm Recorded Future, said BlackCat’s exit scam was especially dangerous because the affiliate still has all the stolen data, and could still demand additional payment or leak the information on his own.

“The affiliates still have this data, and they’re mad they didn’t receive this money, Smilyanets told Wired.com. “It’s a good lesson for everyone. You cannot trust criminals; their word is worth nothing.”

BlackCat’s apparent demise comes closely on the heels of the implosion of another major ransomware group — LockBit, a ransomware gang estimated to have extorted over $120 million in payments from more than 2,000 victims worldwide. On Feb. 20, LockBit’s website was seized by the FBI and the U.K.’s National Crime Agency (NCA) following a months-long infiltration of the group.

LockBit also tried to restore its reputation on the cybercrime forums by resurrecting itself at a new darknet website, and by threatening to release data from a number of major companies that were hacked by the group in the weeks and days prior to the FBI takedown.

But LockBit appears to have since lost any credibility the group may have once had. After a much-promoted attack on the government of Fulton County, Ga., for example, LockBit threatened to release Fulton County’s data unless paid a ransom by Feb. 29. But when Feb. 29 rolled around, LockBit simply deleted the entry for Fulton County from its site, along with those of several financial organizations that had previously been extorted by the group.

Fulton County held a press conference to say that it had not paid a ransom to LockBit, nor had anyone done so on their behalf, and that they were just as mystified as everyone else as to why LockBit never followed through on its threat to publish the county’s data. Experts told KrebsOnSecurity LockBit likely balked because it was bluffing, and that the FBI likely relieved them of that data in their raid.

Smilyanets’ comments are driven home in revelations first published last month by Recorded Future, which quoted an NCA official as saying LockBit never deleted the data after being paid a ransom, even though that is the only reason many of its victims paid.

“If we do not give you decrypters, or we do not delete your data after payment, then nobody will pay us in the future,” LockBit’s extortion notes typically read.

Hopefully, more companies are starting to get the memo that paying cybercrooks to delete stolen data is a losing proposition all around.

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Fulton County, Security Experts Call LockBit’s Bluff

The ransomware group LockBit told officials with Fulton County, Ga. they could expect to see their internal documents published online this morning unless the county paid a ransom demand. LockBit removed Fulton County’s listing from its victim shaming website this morning, claiming the county had paid. But county officials said they did not pay, nor did anyone make payment on their behalf. Security experts say LockBit was likely bluffing and probably lost most of the data when the gang’s servers were seized this month by U.S. and U.K. law enforcement.

The LockBit website included a countdown timer until the promised release of data stolen from Fulton County, Ga. LockBit would later move this deadline up to Feb. 29, 2024.

LockBit listed Fulton County as a victim on Feb. 13, saying that unless it was paid a ransom the group would publish files stolen in a breach at the county last month. That attack disrupted county phones, Internet access and even their court system. LockBit leaked a small number of the county’s files as a teaser, which appeared to include sensitive and sealed court records in current and past criminal trials.

On Feb. 16, Fulton County’s entry — along with a countdown timer until the data would be published — was removed from the LockBit website without explanation. The leader of LockBit told KrebsOnSecurity this was because Fulton County officials had engaged in last-minute negotiations with the group.

But on Feb. 19, investigators with the FBI and the U.K.’s National Crime Agency (NCA) took over LockBit’s online infrastructure, replacing the group’s homepage with a seizure notice and links to LockBit ransomware decryption tools.

In a press briefing on Feb. 20, Fulton County Commission Chairman Robb Pitts told reporters the county did not pay a ransom demand, noting that the board “could not in good conscience use Fulton County taxpayer funds to make a payment.”

Three days later, LockBit reemerged with new domains on the dark web, and with Fulton County listed among a half-dozen other victims whose data was about to be leaked if they refused to pay. As it does with all victims, LockBit assigned Fulton County a countdown timer, saying officials had until late in the evening on March 1 until their data was published.

LockBit revised its deadline for Fulton County to Feb. 29.

LockBit soon moved up the deadline to the morning of Feb. 29. As Fulton County’s LockBit timer was counting down to zero this morning, its listing disappeared from LockBit’s site. LockBit’s leader and spokesperson, who goes by the handle “LockBitSupp,” told KrebsOnSecurity today that Fulton County’s data disappeared from their site because county officials paid a ransom.

“Fulton paid,” LockBitSupp said. When asked for evidence of payment, LockBitSupp claimed. “The proof is that we deleted their data and did not publish it.”

But at a press conference today, Fulton County Chairman Robb Pitts said the county does not know why its data was removed from LockBit’s site.

“As I stand here at 4:08 p.m., we are not aware of any data being released today so far,” Pitts said. “That does not mean the threat is over. They could release whatever data they have at any time. We have no control over that. We have not paid any ransom. Nor has any ransom been paid on our behalf.”

Brett Callow, a threat analyst with the security firm Emsisoft, said LockBit likely lost all of the victim data it stole before the FBI/NCA seizure, and that it has been trying madly since then to save face within the cybercrime community.

“I think it was a case of them trying to convince their affiliates that they were still in good shape,” Callow said of LockBit’s recent activities. “I strongly suspect this will be the end of the LockBit brand.”

Others have come to a similar conclusion. The security firm RedSense posted an analysis to Twitter/X that after the takedown, LockBit published several “new” victim profiles for companies that it had listed weeks earlier on its victim shaming site. Those victim firms — a healthcare provider and major securities lending platform — also were unceremoniously removed from LockBit’s new shaming website, despite LockBit claiming their data would be leaked.

“We are 99% sure the rest of their ‘new victims’ are also fake claims (old data for new breaches),” RedSense posted. “So the best thing for them to do would be to delete all other entries from their blog and stop defrauding honest people.”

Callow said there certainly have been plenty of cases in the past where ransomware gangs exaggerated their plunder from a victim organization. But this time feels different, he said.

“It is a bit unusual,” Callow said. “This is about trying to still affiliates’ nerves, and saying, ‘All is well, we weren’t as badly compromised as law enforcement suggested.’ But I think you’d have to be a fool to work with an organization that has been so thoroughly hacked as LockBit has.”

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LockBit Ransomware Group Resurfaces After Law Enforcement Takedown

The threat actors behind the LockBit ransomware operation have resurfaced on the dark web using new infrastructure, days after an international law enforcement exercise seized control of its servers. To that end, the notorious group has moved its data leak portal to a new .onion address on the TOR network, listing 12 new victims as of writing. The administrator behind LockBit, in a&

FBI’s LockBit Takedown Postponed a Ticking Time Bomb in Fulton County, Ga.

The FBI’s takedown of the LockBit ransomware group last week came as LockBit was preparing to release sensitive data stolen from government computer systems in Fulton County, Ga. But LockBit is now regrouping, and the gang says it will publish the stolen Fulton County data on March 2 unless paid a ransom. LockBit claims the cache includes documents tied to the county’s ongoing criminal prosecution of former President Trump, but court watchers say teaser documents published by the crime gang suggest a total leak of the Fulton County data could put lives at risk and jeopardize a number of other criminal trials.

A new LockBit website listing a countdown timer until the promised release of data stolen from Fulton County, Ga.

In early February, Fulton County leaders acknowledged they were responding to an intrusion that caused disruptions for its phone, email and billing systems, as well as a range of county services, including court systems.

On Feb. 13, the LockBit ransomware group posted on its victim shaming blog a new entry for Fulton County, featuring a countdown timer saying the group would publish the data on Feb. 16 unless county leaders agreed to negotiate a ransom.

“We will demonstrate how local structures negligently handled information protection,” LockBit warned. “We will reveal lists of individuals responsible for confidentiality. Documents marked as confidential will be made publicly available. We will show documents related to access to the state citizens’ personal data. We aim to give maximum publicity to this situation; the documents will be of interest to many. Conscientious residents will bring order.”

Yet on Feb. 16, the entry for Fulton County was removed from LockBit’s site without explanation. This usually only happens after the victim in question agrees to pay a ransom demand and/or enters into negotiations with their extortionists.

However, Fulton County Commission Chairman Robb Pitts said the board decided it “could not in good conscience use Fulton County taxpayer funds to make a payment.”

“We did not pay nor did anyone pay on our behalf,” Pitts said at an incident briefing on Feb. 20.

Just hours before that press conference, LockBit’s various websites were seized by the FBI and the U.K.’s National Crime Agency (NCA), which replaced the ransomware group’s homepage with a seizure notice and used the existing design of LockBit’s victim shaming blog to publish press releases about the law enforcement action.

The feds used the existing design on LockBit’s victim shaming website to feature press releases and free decryption tools.

Dubbed “Operation Cronos,” the effort involved the seizure of nearly three-dozen servers; the arrest of two alleged LockBit members; the release of a free LockBit decryption tool; and the freezing of more than 200 cryptocurrency accounts thought to be tied to the gang’s activities. The government says LockBit has claimed more than 2,000 victims worldwide and extorted over $120 million in payments.

UNFOLDING DISASTER

In a lengthy, rambling letter published on Feb. 24 and addressed to the FBI, the ransomware group’s leader LockBitSupp announced that their victim shaming websites were once again operational on the dark web, with fresh countdown timers for Fulton County and a half-dozen other recent victims.

“The FBI decided to hack now for one reason only, because they didn’t want to leak information fultoncountyga.gov,” LockBitSupp wrote. “The stolen documents contain a lot of interesting things and Donald Trump’s court cases that could affect the upcoming US election.”

A screen shot released by LockBit showing various Fulton County file shares that were exposed.

LockBit has already released roughly two dozen files allegedly stolen from Fulton County government systems, although none of them involve Mr. Trump’s criminal trial. But the documents do appear to include court records that are sealed and shielded from public viewing.

George Chidi writes The Atlanta Objective, a Substack publication on crime in Georgia’s capital city. Chidi says the leaked data so far includes a sealed record related to a child abuse case, and a sealed motion in the murder trial of Juwuan Gaston demanding the state turn over confidential informant identities.

Chidi cites reports from a Fulton County employee who said the confidential material includes the identities of jurors serving on the trial of the rapper Jeffery “Young Thug” Williams, who is charged along with five other defendants in a racketeering and gang conspiracy.

“The screenshots suggest that hackers will be able to give any attorney defending a criminal case in the county a starting place to argue that evidence has been tainted or witnesses intimidated, and that the release of confidential information has compromised cases,” Chidi wrote. “Judge Ural Glanville has, I am told by staff, been working feverishly behind the scenes over the last two weeks to manage the unfolding disaster.”

LockBitSupp also denied assertions made by the U.K.’s NCA that LockBit did not delete stolen data as promised when victims agreed to pay a ransom. The accusation is an explosive one because nobody will pay a ransom if they don’t believe the ransomware group will hold up its end of the bargain.

The ransomware group leader also confirmed information first reported here last week, that federal investigators managed to hack LockBit by exploiting a known vulnerability in PHP, a scripting language that is widely used in Web development.

“Due to my personal negligence and irresponsibility I relaxed and did not update PHP in time,” LockBitSupp wrote. “As a result of which access was gained to the two main servers where this version of PHP was installed.”

LockBitSupp’s FBI letter said the group kept copies of its stolen victim data on servers that did not use PHP, and that consequently it was able to retain copies of files stolen from victims. The letter also listed links to multiple new instances of LockBit dark net websites, including the leak page listing Fulton County’s new countdown timer.

LockBit’s new data leak site promises to release stolen Fulton County data on March 2, 2024, unless paid a ransom demand.

“Even after the FBI hack, the stolen data will be published on the blog, there is no chance of destroying the stolen data without payment,” LockBitSupp wrote. “All FBI actions are aimed at destroying the reputation of my affiliate program, my demoralization, they want me to leave and quit my job, they want to scare me because they can not find and eliminate me, I can not be stopped, you can not even hope, as long as I am alive I will continue to do pentest with postpaid.”

DOX DODGING

In January 2024, LockBitSupp told XSS forum members he was disappointed the FBI hadn’t offered a reward for his doxing and/or arrest, and that in response he was placing a bounty on his own head — offering $10 million to anyone who could discover his real name.

After the NCA and FBI seized LockBit’s site, the group’s homepage was retrofitted with a blog entry titled, “Who is LockBitSupp? The $10M question.” The teaser made use of LockBit’s own countdown timer, and suggested the real identity of LockBitSupp would soon be revealed.

However, after the countdown timer expired the page was replaced with a taunting message from the feds, but it included no new information about LockBitSupp’s identity.

On Feb. 21, the U.S. Department of State announced rewards totaling up to $15 million for information leading to the arrest and/or conviction of anyone participating in LockBit ransomware attacks. The State Department said $10 million of that is for information on LockBit’s leaders, and up to $5 million is offered for information on affiliates.

In an interview with the malware-focused Twitter/X account Vx-Underground, LockBit staff asserted that authorities had arrested a couple of small-time players in their operation, and that investigators still do not know the real-life identities of the core LockBit members, or that of their leader.

“They assert the FBI / NCA UK / EUROPOL do not know their information,” Vx-Underground wrote. “They state they are willing to double the bounty of $10,000,000. They state they will place a $20,000,000 bounty of their own head if anyone can dox them.”

TROUBLE ON THE HOMEFRONT?

In the weeks leading up to the FBI/NCA takedown, LockBitSupp became embroiled in a number of high-profile personal and business disputes on the Russian cybercrime forums.

Earlier this year, someone used LockBit ransomware to infect the networks of AN-Security, a venerated 30-year-old security and technology company based in St. Petersburg, Russia. This violated the golden rule for cybercriminals based in Russia and former soviet nations that make up the Commonwealth of Independent States, which is that attacking your own citizens in those countries is the surest way to get arrested and prosecuted by local authorities.

LockBitSupp later claimed the attacker had used a publicly leaked, older version of LockBit to compromise systems at AN-Security, and said the attack was an attempt to smear their reputation by a rival ransomware group known as “Clop.” But the incident no doubt prompted closer inspection of LockBitSupp’s activities by Russian authorities.

Then in early February, the administrator of the Russian-language cybercrime forum XSS said LockBitSupp had threatened to have him killed after the ransomware group leader was banned by the community. LockBitSupp was excommunicated from XSS after he refused to pay an arbitration amount ordered by the forum administrator. That dispute related to a complaint from another forum member who said LockBitSupp recently stiffed him on his promised share of an unusually large ransomware payout.

A posted by the XSS administrator saying LockBitSupp wanted him dead.

INTERVIEW WITH LOCKBITSUPP

KrebsOnSecurity sought comment from LockBitSupp at the ToX instant messenger ID listed in his letter to the FBI. LockBitSupp declined to elaborate on the unreleased documents from Fulton County, saying the files will be available for everyone to see in a few days.

LockBitSupp said his team was still negotiating with Fulton County when the FBI seized their servers, which is why the county has been granted a time extension. He also denied threatening to kill the XSS administrator.

“I have not threatened to kill the XSS administrator, he is blatantly lying, this is to cause self-pity and damage my reputation,” LockBitSupp told KrebsOnSecurity. “It is not necessary to kill him to punish him, there are more humane methods and he knows what they are.”

Asked why he was so certain the FBI doesn’t know his real-life identity, LockBitSupp was more precise.

“I’m not sure the FBI doesn’t know who I am,” he said. “I just believe they will never find me.”

It seems unlikely that the FBI’s seizure of LockBit’s infrastructure was somehow an effort to stave off the disclosure of Fulton County’s data, as LockBitSupp maintains. For one thing, Europol said the takedown was the result of a months-long infiltration of the ransomware group.

Also, in reporting on the attack’s disruption to the office of Fulton County District Attorney Fani Willis on Feb. 14, CNN reported that by then the intrusion by LockBit had persisted for nearly two and a half weeks.

Finally, if the NCA and FBI really believed that LockBit never deleted victim data, they had to assume LockBit would still have at least one copy of all their stolen data hidden somewhere safe.

Fulton County is still trying to recover systems and restore services affected by the ransomware attack. “Fulton County continues to make substantial progress in restoring its systems following the recent ransomware incident resulting in service outages,” reads the latest statement from the county on Feb. 22. “Since the start of this incident, our team has been working tirelessly to bring services back up.”

Update, Feb. 29, 3:22 p.m. ET: Just hours after this story ran, LockBit changed its countdown timer for Fulton County saying they had until the morning of Feb. 29 (today) to pay a ransonm demand. When the official deadline neared today, Fulton County’s listing was removed from LockBit’s victim shaming website. Asked about the removal of the listing, LockBit’s leader “LockBitSupp” told KrebsOnSecurity that Fulton County paid a ransom demand. County officials have scheduled a press conference on the ransomware attack at 4:15 p.m. ET today.

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Feds Seize LockBit Ransomware Websites, Offer Decryption Tools, Troll Affiliates

U.S. and U.K. authorities have seized the darknet websites run by LockBit, a prolific and destructive ransomware group that has claimed more than 2,000 victims worldwide and extorted over $120 million in payments. Instead of listing data stolen from ransomware victims who didn’t pay, LockBit’s victim shaming website now offers free recovery tools, as well as news about arrests and criminal charges involving LockBit affiliates.

Investigators used the existing design on LockBit’s victim shaming website to feature press releases and free decryption tools.

Dubbed “Operation Cronos,” the law enforcement action involved the seizure of nearly three-dozen servers; the arrest of two alleged LockBit members; the unsealing of two indictments; the release of a free LockBit decryption tool; and the freezing of more than 200 cryptocurrency accounts thought to be tied to the gang’s activities.

LockBit members have executed attacks against thousands of victims in the United States and around the world, according to the U.S. Department of Justice (DOJ). First surfacing in September 2019, the gang is estimated to have made hundreds of millions of U.S. dollars in ransom demands, and extorted over $120 million in ransom payments.

LockBit operated as a ransomware-as-a-service group, wherein the ransomware gang takes care of everything from the bulletproof hosting and domains to the development and maintenance of the malware. Meanwhile, affiliates are solely responsible for finding new victims, and can reap 60 to 80 percent of any ransom amount ultimately paid to the group.

A statement on Operation Cronos from the European police agency Europol said the months-long infiltration resulted in the compromise of LockBit’s primary platform and other critical infrastructure, including the takedown of 34 servers in the Netherlands, Germany, Finland, France, Switzerland, Australia, the United States and the United Kingdom. Europol said two suspected LockBit actors were arrested in Poland and Ukraine, but no further information has been released about those detained.

The DOJ today unsealed indictments against two Russian men alleged to be active members of LockBit. The government says Russian national Artur Sungatov used LockBit ransomware against victims in manufacturing, logistics, insurance and other companies throughout the United States.

Ivan Gennadievich Kondratyev, a.k.a. “Bassterlord,” allegedly deployed LockBit against targets in the United States, Singapore, Taiwan, and Lebanon. Kondratyev is also charged (PDF) with three criminal counts arising from his alleged use of the Sodinokibi (aka “REvil“) ransomware variant to encrypt data, exfiltrate victim information, and extort a ransom payment from a corporate victim based in Alameda County, California.

With the indictments of Sungatov and Kondratyev, a total of five LockBit affiliates now have been officially charged. In May 2023, U.S. authorities unsealed indictments against two alleged LockBit affiliates, Mikhail “Wazawaka” Matveev and Mikhail Vasiliev.

Vasiliev, 35, of Bradford, Ontario, Canada, is in custody in Canada awaiting extradition to the United States (the complaint against Vasiliev is at this PDF). Matveev remains at large, presumably still in Russia. In January 2022, KrebsOnSecurity published Who is the Network Access Broker ‘Wazawaka,’ which followed clues from Wazawaka’s many pseudonyms and contact details on the Russian-language cybercrime forums back to a 31-year-old Mikhail Matveev from Abaza, RU.

An FBI wanted poster for Matveev.

In June 2023, Russian national Ruslan Magomedovich Astamirov was charged in New Jersey for his participation in the LockBit conspiracy, including the deployment of LockBit against victims in Florida, Japan, France, and Kenya. Astamirov is currently in custody in the United States awaiting trial.

LockBit was known to have recruited affiliates that worked with multiple ransomware groups simultaneously, and it’s unclear what impact this takedown may have on competing ransomware affiliate operations. The security firm ProDaft said on Twitter/X that the infiltration of LockBit by investigators provided “in-depth visibility into each affiliate’s structures, including ties with other notorious groups such as FIN7, Wizard Spider, and EvilCorp.”

In a lengthy thread about the LockBit takedown on the Russian-language cybercrime forum XSS, one of the gang’s leaders said the FBI and the U.K.’s National Crime Agency (NCA) had infiltrated its servers using a known vulnerability in PHP, a scripting language that is widely used in Web development.

Several denizens of XSS wondered aloud why the PHP flaw was not flagged by LockBit’s vaunted “Bug Bounty” program, which promised a financial reward to affiliates who could find and quietly report any security vulnerabilities threatening to undermine LockBit’s online infrastructure.

This prompted several XSS members to start posting memes taunting the group about the security failure.

“Does it mean that the FBI provided a pentesting service to the affiliate program?,” one denizen quipped. “Or did they decide to take part in the bug bounty program? :):)”

Federal investigators also appear to be trolling LockBit members with their seizure notices. LockBit’s data leak site previously featured a countdown timer for each victim organization listed, indicating the time remaining for the victim to pay a ransom demand before their stolen files would be published online. Now, the top entry on the shaming site is a countdown timer until the public doxing of “LockBitSupp,” the unofficial spokesperson or figurehead for the LockBit gang.

“Who is LockbitSupp?” the teaser reads. “The $10m question.”

In January 2024, LockBitSupp told XSS forum members he was disappointed the FBI hadn’t offered a reward for his doxing and/or arrest, and that in response he was placing a bounty on his own head — offering $10 million to anyone who could discover his real name.

“My god, who needs me?,” LockBitSupp wrote on Jan. 22, 2024. “There is not even a reward out for me on the FBI website. By the way, I want to use this chance to increase the reward amount for a person who can tell me my full name from USD 1 million to USD 10 million. The person who will find out my name, tell it to me and explain how they were able to find it out will get USD 10 million. Please take note that when looking for criminals, the FBI uses unclear wording offering a reward of UP TO USD 10 million; this means that the FBI can pay you USD 100, because technically, it’s an amount UP TO 10 million. On the other hand, I am willing to pay USD 10 million, no more and no less.”

Mark Stockley, cybersecurity evangelist at the security firm Malwarebytes, said the NCA is obviously trolling the LockBit group and LockBitSupp.

“I don’t think this is an accident—this is how ransomware groups talk to each other,” Stockley said. “This is law enforcement taking the time to enjoy its moment, and humiliate LockBit in its own vernacular, presumably so it loses face.”

In a press conference today, the FBI said Operation Cronos included investigative assistance from the Gendarmerie-C3N in France; the State Criminal Police Office L-K-A and Federal Criminal Police Office in Germany; Fedpol and Zurich Cantonal Police in Switzerland; the National Police Agency in Japan; the Australian Federal Police; the Swedish Police Authority; the National Bureau of Investigation in Finland; the Royal Canadian Mounted Police; and the National Police in the Netherlands.

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Update: The U.K. National Crime Agency (NCA) has confirmed the takedown of LockBit infrastructure. Read here for more details.An international law enforcement operation has led to the seizure of multiple darknet domains operated by LockBit, one of the most prolific ransomware groups, marking the latest in a long list of digital takedowns. While the full extent of the effort, codenamed 

FBI's Most-Wanted Zeus and IcedID Malware Mastermind Pleads Guilty

A Ukrainian national has pleaded guilty in the U.S. to his role in two different malware schemes, Zeus and IcedID, between May 2009 and February 2021. Vyacheslav Igorevich Penchukov (aka Vyacheslav Igoravich Andreev, father, and tank), 37, was arrested by Swiss authorities in October 2022 and extradited to the U.S. last year. He was added to the FBI's most-wanted list in 2012. The U.S.

CISA Warning: Akira Ransomware Exploiting Cisco ASA/FTD Vulnerability

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a now-patched security flaw impacting Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) software to its Known Exploited Vulnerabilities (KEV) catalog, following reports that it's being likely exploited in Akira ransomware attacks. The vulnerability in question is CVE-2020-

Why We Must Democratize Cybersecurity

With breaches making the headlines on an almost weekly basis, the cybersecurity challenges we face are becoming visible not only to large enterprises, who have built security capabilities over the years, but also to small to medium businesses and the broader public. While this is creating greater awareness among smaller businesses of the need to improve their security posture, SMBs are often

Cybersecurity Tactics FinServ Institutions Can Bank On in 2024

The landscape of cybersecurity in financial services is undergoing a rapid transformation. Cybercriminals are exploiting advanced technologies and methodologies, making traditional security measures obsolete. The challenges are compounded for community banks that must safeguard sensitive financial data against the same level of sophisticated threats as larger institutions, but often with more

Bumblebee Malware Returns with New Tricks, Targeting U.S. Businesses

The infamous malware loader and initial access broker known as Bumblebee has resurfaced after a four-month absence as part of a new phishing campaign observed in February 2024. Enterprise security firm Proofpoint said the activity targets organizations in the U.S. with voicemail-themed lures containing links to OneDrive URLs. "The URLs led to a Word file with names such as "

Rhysida Ransomware Cracked, Free Decryption Tool Released

Cybersecurity researchers have uncovered an "implementation vulnerability" that has made it possible to reconstruct encryption keys and decrypt data locked by Rhysida ransomware. The findings were published last week by a group of researchers from Kookmin University and the Korea Internet and Security Agency (KISA). "Through a comprehensive analysis of Rhysida Ransomware, we identified an

U.S. Offers $10 Million Bounty for Info Leading to Arrest of Hive Ransomware Leaders

The U.S. Department of State has announced monetary rewards of up to $10 million for information about individuals holding key positions within the Hive ransomware operation. It is also giving away an additional $5 million for specifics that could lead to the arrest and/or conviction of any person "conspiring to participate in or attempting to participate in Hive ransomware activity."

Alert: New Stealthy "RustDoor" Backdoor Targeting Apple macOS Devices

Apple macOS users are the target of a new Rust-based backdoor that has been operating under the radar since November 2023. The backdoor, codenamed RustDoor by Bitdefender, has been found to impersonate an update for Microsoft Visual Studio and target both Intel and Arm architectures. The exact initial access pathway used to propagate the implant is currently not known, although

Raspberry Robin Malware Upgrades with Discord Spread and New Exploits

The operators of Raspberry Robin are now using two new one-day exploits to achieve local privilege escalation, even as the malware continues to be refined and improved to make it stealthier than before. This means that "Raspberry Robin has access to an exploit seller or its authors develop the exploits themselves in a short period of time," Check Point said in a report this

Critical JetBrains TeamCity On-Premises Flaw Exposes Servers to Takeover - Patch Now

JetBrains is alerting customers of a critical security flaw in its TeamCity On-Premises continuous integration and continuous deployment (CI/CD) software that could be exploited by threat actors to take over susceptible instances. The vulnerability, tracked as CVE-2024-23917, carries a CVSS rating of 9.8 out of 10, indicative of its severity. "The vulnerability may enable an unauthenticated

Beware: Fake Facebook Job Ads Spreading 'Ov3r_Stealer' to Steal Crypto and Credentials

Threat actors are leveraging bogus Facebook job advertisements as a lure to trick prospective targets into installing a new Windows-based stealer malware codenamed Ov3r_Stealer. "This malware is designed to steal credentials and crypto wallets and send those to a Telegram channel that the threat actor monitors," Trustwave SpiderLabs said in a report shared with The Hacker News. Ov3r_Stealer
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