Suspicious Execution of Sysinternals PsService (via process_creation)

title: Suspicious Execution of Sysinternals PsService (via process_creation)
id: 15c9fd60-34fb-541e-9661-8668d6bfbb6f
status: stable
description: This rule detects use of Sysinternals PsService that can be misused for service reconnaissance and tampering
references:
    - https://attack.mitre.org/techniques/T1543/003/
    - https://learn.microsoft.com/en-us/sysinternals/downloads/psservice
author: Huntrule Team
date: 2026-02-15
tags:
    - attack.privilege-escalation
    - attack.discovery
    - attack.persistence
    - attack.t1543.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - OriginalFileName: 'psservice.exe'
        - Image|endswith:
              - '\PsService.exe'
              - '\PsService64.exe'
              - '\PsService64a.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium