InvisibleFerret Loads a Cython Extension from a User Path

nomit vyas@xoxo

•updated Jun 21, 2026•0•0•5

Detects Python loading a .pyd or .so extension from common user-controlled directories like AppData, Temp, Downloads, or project directories, rather than from a trusted package installation. This behavior is indicative of the InvisibleFerret malware.