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New Black Basta decryptor exploits ransomware flaw to recover files encrypted between November 2022 earlier this month

Posted on December 30, 2023 by Dissent

Lawrence Abrams reports:

Researchers have created a decryptor that exploits a flaw in Black Basta ransomware, allowing victims to recover their files for free.

The decryptor allows Black Basta victims from November 2022 to this month to potentially recover their files for free. However, BleepingComputer has learned that the Black Basta developers fixed the bug in their encryption routine about a week ago, preventing this decryption technique from being used in newer attacks.

The ‘Black Basta Buster’ decryptor comes from Security Research Labs (SRLabs), which found a weakness in the encryption algorithm used by the ransomware gang’s encryptors that allows for the discovery of the ChaCha keystream used to XOR encrypt a file.

Read more at Bleeping Computer.

Bravo image by @agungfaizal6 at Freepik.com

Related posts:

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  • Black Basta exposed: A look at a cybercrime data leak and a key member, “Tramp”
  • CISA Advisory: #StopRansomware: Black Basta
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