huntrule

Windows Registry Set: ServiceDll Path Ending with \CurrentControlSet\Services\wercplsupport\Parameters\ServiceDll

Alerts on Windows registry writes to a specific Services\wercplsupport\Parameters\ServiceDll target path.

FreeReviewedSigma · High · v5
Product
windows
Category
registry_set
Author
Trent Liffick (@tliffick) (SigmaHQ), DRL 1.1
Published
2020-05-14
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Execution → 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 identifies registry modifications on Windows where the recorded target object ends with a specific ServiceDll parameter path under the CurrentControlSet. Attackers commonly use ServiceDll values to influence what code a service loads, enabling persistence or defense evasion. The detection relies on registry set event telemetry that includes a TargetObject field.

Reporting behind it

Related detections9 linkedT1047 — drag to rearrange
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Windows Persistence Attempt via sc config or wmic COR_PROFILER (Blue Mockingbird)
Malicious Impacket wmiexec Command Execution via WmiPrvSE Spawning cmd with Admin-Share Output Redirect (via process_creation)
Malicious QDoor Remote Proxy Execution via WMIC Node Process Call Create of svhost from Temp (via process_creation)
Malicious Remote Payload Deployment via WMIC Node Process Call Create with bitsadmin Transfer (via process_creation)
Malicious WMIexec Style Command Output Redirection to Local Admin Share
Suspicious Registry Value under Console WindowsUpdates for C2 Storage
Suspicious Impacket Style Command Execution with ADMIN Share Output Redirect
Suspicious Office VBA Object Model Access Enabled via Registry (via registry_set)
Windows Registry Set: ServiceDll Path Ending with \CurrentControlSet\Services\wercplsupport\Parameters\ServiceDll
Pivot detection · T1047 · 9 related

Changelog

v5
  1. v5
    Candidate ingested via manual entry.2026-07-31
  2. v4
    Candidate ingested via manual entry.2026-07-31
  3. v3
    Candidate ingested via manual entry.2026-07-31
  4. v2
    Candidate ingested via manual entry.2026-07-31
  5. v1
    No changelog recorded for this version.2026-07-30

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