Void Dokkaebi has updated its InvisibleFerret malware by compiling the original Python scripts into Cython binaries (.pyd for Windows, .so for macOS) to evade traditional script-based detection. The campaign utilizes a multi-stage BeaverTail JavaScript infection chain to deliver these binaries, targeting software developers to steal cryptocurrency wallet credentials, establish backdoor access, and downgrade browser security controls.
Cython
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Analyzing Void Dokkaebi’s Cython-Compiled InvisibleFerret Malware