Suspicious Run Key Persistence Executing system.bat via registry_set

PremiumReviewedSigma · High · v1
Category
registry_set
Author
HuntRule
Published
2026-10-01
Updated
2026-10-01

ATT&CK techniques

Persistence → Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects a HKCU Run value named MicrosoftUpdate that points to a system.bat script. The compromised axios package established persistence by registering a Windows-update-themed autorun entry executing a batch file, so this value indicates user-level persistence for the supply chain payload.

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Malicious Run Key Persistence Masquerading as Windows Update
Suspicious Run Key Persistence Under Masquerading Service Names
Suspicious Run Key Persistence With Masqueraded System Binary by Millenium RAT (via registry_set)
Suspicious Autostart Persistence via Run Key Pointing Outside Program Files (via registry_set)
Suspicious RunOnce Persistence Relaunching Payload with Safe Mode Flag
Suspicious Run Key Persistence Executing system.bat via registry_set
Pivot detection · T1547.001 · 9 related

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