Lessons from a Ransomware Attack against the British Library
You might think that libraries are kind of boring, but this self-analysis of a 2023 ransomware and extortion attack against the British Library is anything but.
Entries Tagged "ransomware"
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Ransomware Gang Files SEC Complaint
A ransomware gang, annoyed at not being paid, filed an SEC complaint against its victim for not disclosing its security breach within the required four days.
This is over the top, but is just another example of the extreme pressure ransomware gangs put on companies after seizing their data. Gangs are now going through the data, looking for particularly important or embarrassing pieces of data to threaten executives with exposing. I have heard stories of executives’ families being threatened, of consensual porn being identified (people regularly mix work and personal email) and exposed, and of victims’ customers and partners being directly contacted. Ransoms are in the millions, and gangs do their best to ensure that the pressure to pay is intense.
New York Increases Cybersecurity Rules for Financial Companies
Another example of a large and influential state doing things the federal government won’t:
Boards of directors, or other senior committees, are charged with overseeing cybersecurity risk management, and must retain an appropriate level of expertise to understand cyber issues, the rules say. Directors must sign off on cybersecurity programs, and ensure that any security program has “sufficient resources” to function.
In a new addition, companies now face significant requirements related to ransom payments. Regulated firms must now report any payment made to hackers within 24 hours of that payment.
Micro-Star International Signing Key Stolen
Micro-Star International—aka MSI—had its UEFI signing key stolen last month.
This raises the possibility that the leaked key could push out updates that would infect a computer’s most nether regions without triggering a warning. To make matters worse, Matrosov said, MSI doesn’t have an automated patching process the way Dell, HP, and many larger hardware makers do. Consequently, MSI doesn’t provide the same kind of key revocation capabilities.
Delivering a signed payload isn’t as easy as all that. “Gaining the kind of control required to compromise a software build system is generally a non-trivial event that requires a great deal of skill and possibly some luck.” But it just got a whole lot easier.
Mass Ransomware Attack
A vulnerability in a popular data transfer tool has resulted in a mass ransomware attack:
TechCrunch has learned of dozens of organizations that used the affected GoAnywhere file transfer software at the time of the ransomware attack, suggesting more victims are likely to come forward.
However, while the number of victims of the mass-hack is widening, the known impact is murky at best.
Since the attack in late January or early February—the exact date is not known—Clop has disclosed less than half of the 130 organizations it claimed to have compromised via GoAnywhere, a system that can be hosted in the cloud or on an organization’s network that allows companies to securely transfer huge sets of data and other large files.
Ransomware Payments Are Down
Chainalysis reports that worldwide ransomware payments were down in 2022.
Ransomware attackers extorted at least $456.8 million from victims in 2022, down from $765.6 million the year before.
As always, we have to caveat these findings by noting that the true totals are much higher, as there are cryptocurrency addresses controlled by ransomware attackers that have yet to be identified on the blockchain and incorporated into our data. When we published last year’s version of this report, for example, we had only identified $602 million in ransomware payments in 2021. Still, the trend is clear: Ransomware payments are significantly down.
However, that doesn’t mean attacks are down, or at least not as much as the drastic drop-off in payments would suggest. Instead, we believe that much of the decline is due to victim organizations increasingly refusing to pay ransomware attackers.
CryWiper Data Wiper Targeting Russian Sites
Kaspersky is reporting on a data wiper masquerading as ransomware that is targeting local Russian government networks.
The Trojan corrupts any data that’s not vital for the functioning of the operating system. It doesn’t affect files with extensions .exe, .dll, .lnk, .sys or .msi, and ignores several system folders in the C:\Windows directory. The malware focuses on databases, archives, and user documents.
So far, our experts have seen only pinpoint attacks on targets in the Russian Federation. However, as usual, no one can guarantee that the same code won’t be used against other targets.
Nothing leading to an attribution.
News article.
Slashdot thread.
Breaking the Zeppelin Ransomware Encryption Scheme
Brian Krebs writes about how the Zeppelin ransomware encryption scheme was broken:
The researchers said their break came when they understood that while Zeppelin used three different types of encryption keys to encrypt files, they could undo the whole scheme by factoring or computing just one of them: An ephemeral RSA-512 public key that is randomly generated on each machine it infects.
“If we can recover the RSA-512 Public Key from the registry, we can crack it and get the 256-bit AES Key that encrypts the files!” they wrote. “The challenge was that they delete the [public key] once the files are fully encrypted. Memory analysis gave us about a 5-minute window after files were encrypted to retrieve this public key.”
Unit 221B ultimately built a “Live CD” version of Linux that victims could run on infected systems to extract that RSA-512 key. From there, they would load the keys into a cluster of 800 CPUs donated by hosting giant Digital Ocean that would then start cracking them. The company also used that same donated infrastructure to help victims decrypt their data using the recovered keys.
A company offered recovery services based on this break, but was reluctant to advertise because it didn’t want Zeppelin’s creators to fix their encryption flaw.
Technical details.
EDITED TO ADD (12/12): When BitDefender publicly advertised a decryption tool for a strain of DarkSide ransomware, DarkSide immediately updated its ransomware to render the tool obsolete. It’s hard to come up with a solution to this problem.
A Digital Red Cross
The International Committee of the Red Cross wants some digital equivalent to the iconic red cross, to alert would-be hackers that they are accessing a medical network.
The emblem wouldn’t provide technical cybersecurity protection to hospitals, Red Cross infrastructure or other medical providers, but it would signal to hackers that a cyberattack on those protected networks during an armed conflict would violate international humanitarian law, experts say, Tilman Rodenhäuser, a legal adviser to the International Committee of the Red Cross, said at a panel discussion hosted by the organization on Thursday.
I can think of all sorts of problems with this idea and many reasons why it won’t work, but those also apply to the physical red cross on buildings, vehicles, and people’s clothing. So let’s try it.
EDITED TO ADD: Original reference.
The LockBit Ransomware Gang Is Surprisingly Professional
This article makes LockBit sound like a legitimate organization:
The DDoS attack last weekend that put a temporary stop to leaking Entrust data was seen as an opportunity to explore the triple extortion tactic to apply more pressure on victims to pay a ransom.
LockBitSupp said that the ransomware operator is now looking to add DDoS as an extortion tactic on top of encrypting data and leaking it.
“I am looking for dudosers [DDoSers] in the team, most likely now we will attack targets and provide triple extortion, encryption + date leak + dudos, because I have felt the power of dudos and how it invigorates and makes life more interesting,” LockBitSupp wrote in a post on a hacker forum.
The gang also promised to share over torrent 300GB of data stolen from Entrust so “the whole world will know your secrets.”
LockBit’s spokesperson said that they would share the Entrust data leak privately with anyone that contacts them before making it available over torrent.
They’re expanding: locking people out of their data, publishing it if the victim doesn’t pay, and DDoSing their network as an additional incentive.
Sidebar photo of Bruce Schneier by Joe MacInnis.