Vidar VM bytecode interpreter dispatch-table structural pattern

Ibrahim Saud@tektrix

•updated Sep 23, 2026•0•0•6

Detects the compiled x86/x64 fetch-decode-execute dispatch loop used by the Vidar Stealer custom VM bytecode interpreter (v2.0+). The rule identifies the structural jump-table bounds-check and computed-jump idiom that is consistent across different builds of the malware, despite randomization of opcode values and XOR keys.