Suspicious WScript Executing VBScript from Masqueraded File Extension

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.005Visual Basic
Persistence
Priv Esc
Defense Evasion
- T1036.008Masquerade File Type
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects wscript.exe running a VBScript engine against files with non-script extensions such as drv, regtrans-ms or ntuser.dat, an execution and masquerading technique used by Shuckworm to hide its GammaSteel loader.

Reporting behind it

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Suspicious WScript Executing VBScript from Masqueraded File Extension

Pivot detection · T1059.005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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