Suspicious AutoIt Execution from PIF File Masquerade

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1027Obfuscated Files or Information
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects an AutoIt interpreter running with a pif extension image such as Flour.pif from a user writable location. This masquerade delivered an RC4 decrypted Vidar Stealer payload in the KMSPico drive-by chain. Renaming the AutoIt engine to a pif hides script based execution from casual review.

Reporting behind it

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Suspicious AutoIt Execution from PIF File Masquerade

Pivot detection · T1027 · 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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