Remote Task Creation via ATSVC Named Pipe - Zeek — Sigma Rule

Rule metadata and linked tags

Author: Samir Bousseaden, @neu5rn. Source status: test; severity: medium. Source dates: 2020-04-03 / 2022-12-27.

{
  "product": "zeek",
  "service": "smb_files"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: cd153533a5f9fff51203749821706ca85a223852ed0e02180941cea9661ed68f

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: Remote Task Creation via ATSVC Named Pipe - Zeek
id: dde85b37-40cd-4a94-b00c-0b8794f956b5
related:
    - id: f6de6525-4509-495a-8a82-1f8b0ed73a00
      type: derived
status: test
description: Detects remote task creation via at.exe or API interacting with ATSVC namedpipe
references:
    - https://web.archive.org/web/20230409194125/https://blog.menasec.net/2019/03/threat-hunting-25-scheduled-tasks-for.html
author: 'Samir Bousseaden, @neu5rn'
date: 2020-04-03
modified: 2022-12-27
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.lateral-movement
    - attack.persistence
    - car.2013-05-004
    - car.2015-04-001
    - attack.t1053.002
logsource:
    product: zeek
    service: smb_files
detection:
    selection:
        path: '\\\*\IPC$'
        name: 'atsvc'
        # Accesses: '*WriteData*'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://web.archive.org/web/20230409194125/https://blog.menasec.net/2019/03/threat-hunting-25-scheduled-tasks-for.html