CSExec Service Installation — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-08-07 / not supplied.

{
  "product": "windows",
  "service": "system"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b5e893f85cff65fc4ca342701ce4a5da934576f2f13ad2d1dca6efce1de7b4e8

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: CSExec Service Installation
id: a27e5fa9-c35e-4e3d-b7e0-1ce2af66ad12
status: test
description: Detects CSExec service installation and execution events
references:
    - https://github.com/malcomvetter/CSExec
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-07
tags:
    - attack.execution
    - attack.t1569.002
logsource:
    product: windows
    service: system
detection:
    selection_eid:
        Provider_Name: 'Service Control Manager'
        EventID: 7045
    selection_service:
        - ServiceName: 'csexecsvc'
        - ImagePath|endswith: '\csexecsvc.exe'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/malcomvetter/CSExec