Bitdefender's free decryptor enables victims of ShrinkLocker ransomware to recover their files by taking advantage of a specific data recovery window after BitLocker protectors are removed.
ShrinkLocker, discovered by Kaspersky in 2024, exploits Microsoft's BitLocker to encrypt files for extortion against targets in Mexico, Indonesia, and Jordan.
The investigation of a ShrinkLocker attack on a healthcare company showed how threat actors increasingly exploit trusted relationships, infiltrating the supply chain via compromised contractor accounts.
ShrinkLocker's effective attack method involved lateral movement to domain controllers, using legitimate credentials, and deploying scripts to install ransomware on multiple machines.
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