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
title: "Windows Process Creation: EDRSilencer Executed"
id: bcb592f0-9c87-413b-955a-83287e7e9818
status: test
description: 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.
references:
  - https://github.com/netero1010/EDRSilencer
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_hktl_edrsilencer.yml
author: "@gott_cyber, Huntrule Team"
date: 2024-01-02
tags:
  - attack.defense-impairment
  - attack.t1685
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    - Image|endswith: \EDRSilencer.exe
    - OriginalFileName: EDRSilencer.exe
    - Description|contains: EDRSilencer
  condition: selection
falsepositives:
  - Unlikely
level: high
license: DRL-1.1
related:
  - id: eb2d07d4-49cb-4523-801a-da002df36602
    type: derived