PsExec Service File Creation — Sigma Rule

Rule metadata and linked tags

Author: Thomas Patzke. Source status: test; severity: low. Source dates: 2017-06-12 / 2022-10-26.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1ec5a841d0d7b26fcd9403c660fc74b3833b2606b60b7af9d0b9b7c93aab03b6

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: PsExec Service File Creation
id: 259e5a6a-b8d2-4c38-86e2-26c5e651361d
related:
    - id: 42c575ea-e41e-41f1-b248-8093c3e82a28
      type: derived
status: test
description: Detects default PsExec service filename which indicates PsExec service installation and execution
references:
    - https://www.jpcert.or.jp/english/pub/sr/ir_research.html
    - https://jpcertcc.github.io/ToolAnalysisResultSheet
author: Thomas Patzke
date: 2017-06-12
modified: 2022-10-26
tags:
    - attack.execution
    - attack.t1569.002
    - attack.s0029
logsource:
    category: file_event
    product: windows
detection:
    selection:
        TargetFilename|endswith: '\PSEXESVC.exe'
    condition: selection
falsepositives:
    - Unknown
level: low

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.jpcert.or.jp/english/pub/sr/ir_research.html
• https://jpcertcc.github.io/ToolAnalysisResultSheet