AutoIt Script Execution via A3X Payload

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-09-14
Updated
2026-09-14

ATT&CK techniques

Execution
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects execution of a compiled AutoIt script through the AutoIt3ExecuteScript switch with an .a3x payload, seen in the Andromeda Gamarue cluster running via a masqueraded GoogleChrome.exe. Abusing the AutoIt interpreter to run a3x scripts is a common malware execution and obfuscation technique.

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