Kaseya’s ‘Master Key’ to REvil Attack Leaked Online

Someone has leaked the master decryption key that Kaseya used to unlock the files encrypted by a REvil ransomware attack on the company that affected customers across 22 countries last month. However, while the key may be interesting to security researchers, it’s not likely to be of use to any of...

What’s Next for REvil’s Victims?

Last week, the servers of ransomware giant REvil vanished. Many applauded as dark-web and clear-web sites used to support the backend infrastructure of REvil, aka Sodinokibi, as well as to leak victims’ data, slipped offline early Tuesday morning. Not REvil’s victims, though. They’re now stuck,...

Ransomware’s Dangerous New Trick: Double-Encrypting Your Data

Even when you pay for a decryption key, your files may still be locked up by another strain of malware...

GHSA-RVCW-F68W-8H8H Padding Oracle Attack due to Observable Timing Discrepancy in jose-node-cjs-runtime

Impact AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed JWEDecryptionFailed would be thrown. But a possibly observable difference in timing when padding error would occur while...

GHSA-94HH-PJJG-RWMR Padding Oracle Attack due to Observable Timing Discrepancy in jose-browser-runtime

Impact AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed JWEDecryptionFailed would be thrown. But a possibly observable difference in timing when padding error would occur while...

Padding Oracle Attack

jose-node-esm-runtime is vulnerable to padding oracle attack. An attacker is able to exploit a padding error without knowing the decryption key by issuing on average 128b calls to the padding oracle while decrypting the ciphertext which makes a padding error...

CVE-2021-29446

jose-node-cjs-runtime is an npm package which provides a number of cryptographic functions. In versions prior to 3.11.4 the AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed...

CVE-2021-29446 Padding Oracle Attack due to Observable Timing Discrepancy in jose-node-cjs-runtime

jose-node-cjs-runtime is an npm package which provides a number of cryptographic functions. In versions prior to 3.11.4 the AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed...

Code injection

jose is an npm library providing a number of cryptographic operations. In vulnerable versions AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed JWEDecryptionFailed would be thrown. A...

CVE-2021-29443 Padding Oracle Attack due to Observable Timing Discrepancy in jose

jose is an npm library providing a number of cryptographic operations. In vulnerable versions AESCBCHMACSHA2 Algorithm A128CBC-HS256, A192CBC-HS384, A256CBC-HS512 decryption would always execute both HMAC tag verification and CBC decryption, if either failed JWEDecryptionFailed would be thrown. A...

Directory traversal

Yeastar NeoGate TG400 91.3.0.3 devices are affected by Directory Traversal. An authenticated user can decrypt firmware and can read sensitive information, such as a password or decryption key...

CVE-2021-27328

Yeastar NeoGate TG400 91.3.0.3 devices are affected by Directory Traversal. An authenticated user can decrypt firmware and can read sensitive information, such as a password or decryption key...

Ransomware Demands Spike 320%, Payments Rise

When it comes to paying the ransom in a ransomware attack, demands are on the rise. Yet, many companies that paid the ransom failed to receive a decryption key, in a survey issued Monday. In fact, pandemic-themed phishing scams, a sustained onslaught of ransomware attacks and the rise of a remote...

CVE-2020-14474

The Cellebrite UFED physical device 5.0 through 7.5.0.845 relies on key material hardcoded within both the executable code supporting the decryption process, and within the encrypted files themselves by using a key enveloping technique. The recovered key material is the same for every device...

Alabama Hospitals Pay Up in Ransomware Attack

An Alabama hospital system has paid its attackers in a ransomware attack that knocked its systems offline on Oct. 1. Officials at the DCH Health System didn’t say how much the hospitals paid for the decryption key, but noted that they have started a “methodical” process of system restoration. “We...

iNSYNQ Ransom Attack Began With Phishing Email

A ransomware outbreak that hit QuickBooks cloud hosting firm iNSYNQ in mid-July appears to have started with an email phishing attack that snared an employee working in sales for the company, KrebsOnSecurity has learned. It also looks like the intruders spent roughly ten days rooting around...

What Happens When Victims Pay Ransomware Attackers?

For many hackers around the globe, ransomware infections have become a lucrative business. Although these types of malware samples have been around for years now, they continue to spur success - and high monetary profits - for attackers. In fact, according to a statement from U.S. Deputy Attorney...

Armor - Tool Designed To Create Encrypted macOS Payloads Capable Of Evading Antivirus Scanners

Armor is a simple Bash script designed to create encrypted macOS payloads capable of evading antivirus scanners. Below is an example gif of Armor being used with a simple Netcat payload. A Netcat listener is started on port 4444. The "payload.txt" file is read and shown to contain a simple Bash...

First-Ever Ransomware Found Using 'Process Doppelgänging' Attack to Evade Detection

Security researchers have spotted the first-ever ransomware exploiting Process Doppelgänging, a new fileless code injection technique that could help malware evade detection. The Process Doppelgänging attack takes advantage of a built-in Windows function, i.e., NTFS Transactions, and an outdated...

Bad Rabbit Linked to ExPetr/Not Petya Attacks

A link has been confirmed between the Bad Rabbit ransomware outbreak detected yesterday in major organizations in Russia and Ukraine and this summer’s ExPetr/Not Petya attacks. Researchers at Kaspersky Lab said there are “clear ties” between the two attacks though one major piece of the puzzle is...