Sysinternals PsSuspend Execution — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-03-23 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3bf10cd86e2108f244e2fc14082dc1b734fae42f762318f113a003a782d1d140

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Sysinternals PsSuspend Execution
id: 48bbc537-b652-4b4e-bd1d-281172df448f
related:
    - id: 4beb6ae0-f85b-41e2-8f18-8668abc8af78
      type: similar
status: test
description: Detects usage of Sysinternals PsSuspend which can be abused to suspend critical processes
references:
    - https://learn.microsoft.com/en-us/sysinternals/downloads/pssuspend
    - https://twitter.com/0gtweet/status/1638069413717975046
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-03-23
tags:
    - attack.privilege-escalation
    - attack.discovery
    - attack.persistence
    - attack.t1543.003
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - OriginalFileName: 'pssuspend.exe'
        - Image|endswith:
              - '\pssuspend.exe'
              - '\pssuspend64.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://learn.microsoft.com/en-us/sysinternals/downloads/pssuspend
• https://twitter.com/0gtweet/status/1638069413717975046