huntrule

Windows Process Creation: EDRSilencer Executed

Flags execution of EDRSilencer.exe on Windows based on process image and identifying metadata.

FreeReviewedSigma · High · v2
Product
windows
Category
process_creation
Author
@gott_cyber (SigmaHQ), DRL 1.1
Published
2024-01-02
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

  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 execution of the EDRSilencer executable by matching the process image path ending with \EDRSilencer.exe, the original file name being EDRSilencer.exe, and the process description containing EDRSilencer. EDRSilencer is used to impair defensive visibility by leveraging Windows Filtering Platform to prevent EDR agents from reporting security events. The detection relies on Windows process creation telemetry fields for image path, original file name, and description.

Reporting behind it

Related detections9 linkedT1685 — drag to rearrange
Suspicious Windows Defender Exclusion of User Profile via PowerShell (via process_creation)
Malicious Vulnerable Driver Service Creation for BYOVD (via process_creation)
Malicious Microsoft Defender Disabled via Registry DisableAntiSpyware (via process_creation)
Suspicious Termination of Defender Tray Process via Taskkill
Malicious Windows Defender Disablement via MpCmdRun RemoveDefinitions
Malicious Unsigned VIB Installation on ESXi Host via esxcli (via process_creation)
Suspicious In-Memory PowerShell Execution from Web Server via Automation Assembly (via image_load)
Malicious EDR Evasion Driver Load from AnyDesk Directory via k.sys (via image_load)
Malicious Zemana Vulnerable Driver Load for EDR Termination (via image_load)
Windows Process Creation: EDRSilencer Executed
Pivot detection · T1685 · 9 related

Changelog

v2
  1. v2
    Candidate ingested via manual entry.2026-07-31
  2. 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.