Pay2Key Polyglot setup.cmd IEX Fileless Execution via PowerShell

Ibrahim Saud@tektrix

•updated Jun 27, 2026•1•0•4

This rule detects suspicious process execution patterns that are characteristic of fileless malware execution or malicious script handling. It specifically targets PowerShell commands using ReadAllText to read script content from stdin/env:0, the use of Sysnative paths for architectural bypasses, and the execution of setup.cmd files from 7Zip extraction directories.