Suspicious Process Start Locations — Sigma Rule

Rule metadata and linked tags

Author: juju4, Jonhnathan Ribeiro, oscd.community. Source status: test; severity: medium. Source dates: 2019-01-16 / 2022-01-07.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 5f3cfd6e1f12e885f9625f7b925b6fb3524ab557951915029e728e1de75522be

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: Suspicious Process Start Locations
id: 15b75071-74cc-47e0-b4c6-b43744a62a2b
status: test
description: Detects suspicious process run from unusual locations
references:
    - https://car.mitre.org/wiki/CAR-2013-05-002
author: juju4, Jonhnathan Ribeiro, oscd.community
date: 2019-01-16
modified: 2022-01-07
tags:
    - attack.stealth
    - attack.t1036
    - car.2013-05-002
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|contains:
              - ':\RECYCLER\'
              - ':\SystemVolumeInformation\'
        - Image|startswith:
              - 'C:\Windows\Tasks\'
              - 'C:\Windows\debug\'
              - 'C:\Windows\fonts\'
              - 'C:\Windows\help\'
              - 'C:\Windows\drivers\'
              - 'C:\Windows\addins\'
              - 'C:\Windows\cursors\'
              - 'C:\Windows\system32\tasks\'
    condition: selection
falsepositives:
    - False positives depend on scripts and administrative tools used in the monitored environment
level: medium

Original YAML and metadata in JSON

False positives

• False positives depend on scripts and administrative tools used in the monitored environment

Source references

• https://car.mitre.org/wiki/CAR-2013-05-002