Suspicious File Creation by OpenEDR ITSMService on Windows

ATT&CK techniques

Lateral Movement → C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
- T1570Lateral Tool Transfer
Collection
C2
- T1105Ingress Tool Transfer
- T1219Remote Access Tools
Exfiltration
Impact

What it detects

This rule flags file creation events where OpenEDR's ITSMService.exe creates files with potentially dangerous extensions. Attackers could leverage remote management functionality to stage or deploy executable and script content on endpoints. Telemetry relies on Windows file event logging that records the creating process image and the target filename extension.

Reporting behind it

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Suspicious File Creation by OpenEDR ITSMService on Windows

Pivot detection · T1105 · 9 related

Changelog

v2

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

windows-suspicious-file-creation-by-openedr-itsmservice-exe-using-executable-arc-9e4b7d3a

title: Suspicious File Creation by OpenEDR ITSMService on Windows
id: fd119879-0488-44d4-bcd9-94d6ba224b6e
status: experimental
description: This rule flags file creation events where OpenEDR's ITSMService.exe creates files with potentially dangerous extensions. Attackers could leverage remote management functionality to stage or deploy executable and script content on endpoints. Telemetry relies on Windows file event logging that records the creating process image and the target filename extension.
author: "@kostastsale, Huntrule Team"
date: 2026-02-19
references:
  - https://kostas-ts.medium.com/detecting-abuse-of-openedrs-permissive-edr-trial-a-security-researcher-s-perspective-fc55bf53972c
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/file/file_event/file_event_win_comodo_itsm_potentially_suspicious_file_creation.yml
tags:
  - attack.command-and-control
  - attack.t1105
  - attack.lateral-movement
  - attack.t1570
  - attack.t1219
logsource:
  product: windows
  category: file_event
detection:
  selection_process:
    Image|endswith: \COMODO\Endpoint Manager\ITSMService.exe
  selection_suspicious_extensions:
    TargetFilename|endswith:
      - .7z
      - .bat
      - .cmd
      - .com
      - .dll
      - .exe
      - .hta
      - .js
      - .pif
      - .ps1
      - .rar
      - .scr
      - .vbe
      - .vbs
      - .zip
  condition: all of selection_*
falsepositives:
  - Legitimate OpenEDR file management operations
  - Authorized remote file uploads by IT administrators
  - Software deployment through OpenEDR console
level: medium
license: DRL-1.1
related:
  - id: 9e4b7d3a-6f2c-4e9a-8d1b-3c5e7a9f2b4d
    type: derived

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