BeepRAT VM/Sandbox Evasion — Multi-Vector Pre-Execution Fingerprint Burst

Ibrahim Saud@tektrix

•updated Jun 30, 2026•0•0•0

Detects BeepRAT malware exhibiting anti-analysis behavior by performing a sequence of environment-fingerprinting checks within a 60-second window. The rule monitors for a combination of registry queries targeting virtualization artifacts (VMware, VirtualBox) and WMI queries for system hardware/OS information (Win32_OperatingSystem, CIM_Memory), which are common techniques used by BeepRAT to detect virtual machines and sandboxes before execution.