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Double-Encrypting Ransomware

Schneier on Security

In the first, hackers encrypt data with ransomware A and then re-encrypt that data with ransomware B. The other path involves what Emsisoft calls a “side-by-side encryption” attack, in which attacks encrypt some of an organization’s systems with ransomware A and others with ransomware B.

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Ransomware: 8 Things That You Must Know

Joseph Steinberg

While ransomware may seem like a straightforward concept, people who are otherwise highly-knowledgeable seem to cite erroneous information about ransomware on a regular basis. As such, I would like to point out 8 essential points about ransomware. Many ransomware attacks are now targeted, rather than opportunistic.

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Details of the REvil Ransomware Attack

Schneier on Security

ArsTechnica has a good story on the REvil ransomware attack of last weekend, with technical details: This weekend’s attack was carried out with almost surgical precision. The ransomware dropper Agent.exe is signed with a Windows-trusted certificate that uses the registrant name “PB03 TRANSPORT LTD.”

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ChatGPT-Written Malware

Schneier on Security

I don’t know how much of a thing this will end up being, but we are seeing ChatGPT-written malware in the wild. ” The Python code combined various cryptographic functions, including code signing, encryption, and decryption. .”

Malware 65
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Researchers Quietly Cracked Zeppelin Ransomware Keys

Krebs on Security

Peter is an IT manager for a technology manufacturer that got hit with a Russian ransomware strain called “ Zeppelin ” in May 2020. He’d been on the job less than six months, and because of the way his predecessor architected things, the company’s data backups also were encrypted by Zeppelin.

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What Is ShrinkLocker? New Ransomware Targets Microsoft BitLocker Encryption Feature

Tech Republic Security

The ShrinkLocker ransomware exploits the BitLocker feature on enterprise PCs to encrypt the entire local drive and remove recovery options.

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Ransomware Now Leaking Stolen Documents

Schneier on Security

Originally, ransomware didn't involve any data theft. Malware would encrypt the data on your computer, and demand a ransom for the encryption key. Now ransomware is increasingly involving both encryption and exfiltration. Brian Krebs wrote about this in December.