MASKED SPIDER is an opportunistic Big Game Hunting (BGH) eCrime adversary active since at least May 2022. MASKED SPIDER is responsible for the development and likely private operation of BianLian ransomware. The ransomware encrypts files with AES-256 using hard-coded key information and targets Microsoft Windows and VMware ESXi platforms. Around January 2023, MASKED SPIDER likely discontinued usin...
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