sigmamediumHunting

Sysinternals PsService Execution

Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering

MITRE ATT&CK

privilege-escalationdiscoverypersistence

Detection Query

selection:
  - OriginalFileName: psservice.exe
  - Image|endswith:
      - \PsService.exe
      - \PsService64.exe
condition: selection

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2022-06-16

Data Sources

windowsProcess Creation Events

Platforms

windows

References

https://learn.microsoft.com/en-us/sysinternals/downloads/psservice

Tags

attack.privilege-escalationattack.discoveryattack.persistenceattack.t1543.003

Raw Content

title: Sysinternals PsService Execution
id: 3371f518-5fe3-4cf6-a14b-2a0ae3fd8a4f
status: test
description: Detects usage of Sysinternals PsService which can be abused for service reconnaissance and tampering
references:
    - https://learn.microsoft.com/en-us/sysinternals/downloads/psservice
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-16
modified: 2023-02-24
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'
    condition: selection
falsepositives:
    - Legitimate use of PsService by an administrator
level: medium