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Windows UAC Bypass Indicator via sdclt Registry Key Manipulation

Alerts on registry set activity consistent with sdclt-related UAC bypass key manipulation.

FreeReviewedSigma · High · v1
Product
windows
Category
registry_set
Author
Omer Yampel, Christian Burkard (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2017-03-17
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

Priv Esc → 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 registry modifications tied to UAC bypass behavior by matching specific TargetObject paths associated with sdclt.exe registry entries. Attackers use this technique to influence elevated execution flows without triggering the typical user consent prompt. The detection relies on Windows registry set telemetry capturing the modified TargetObject fields and, in one case, a Details value matching a path pattern.

Reporting behind it

Related detections9 linkedT1548.002 — drag to rearrange
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Suspicious UAC Bypass by Disabling Admin Consent Prompt via registry_set
Malicious Cloud Atlas UAC Bypass via fodhelper (via process_creation)
Suspicious computerdefaults.exe Spawning Child Process
Suspicious UAC Bypass via control.exe App Paths or Shell Open Command Hijack
Malicious UAC Bypass via COMAutoApprovalList Registry Modification (via registry_set)
Suspicious UAC Bypass via COMAutoApprovalList Registry Modification (via registry_set)
Malicious UAC Bypass via explorer.exe NOUACCHECK Argument
Suspicious UAC Bypass via ms-settings Shell Command Hijack (via registry_set)
Windows UAC Bypass Indicator via sdclt Registry Key Manipulation
Pivot detection · T1548.002 · 9 related

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