huntrule

Windows Process Creation: Registry Tampering of DisableRestrictedAdmin in Lsa Key

Alerts when a process command line references LSA DisableRestrictedAdmin to change RestrictedAdmin behavior via the registry.

FreeReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
frack113 (SigmaHQ), DRL 1.1
Published
2023-01-13
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

Persistence → Defense Evasion

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags process creation events where the command line contains both the LSA key path and the DisableRestrictedAdmin registry value, indicating an attempt to change RestrictedAdmin mode settings. RestrictedAdmin mode is intended to limit reuse of credentials over Remote Desktop connections, so modifying this value can undermine that protection. It relies on Windows process creation telemetry with the command line content matching the specified key and value strings.

Reporting behind it

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Windows Process Creation: Registry Tampering of DisableRestrictedAdmin in Lsa Key
Pivot detection · T1112 · 9 related

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