File Time Attribute Change — Sigma Rule

Rule metadata and linked tags

Author: Igor Fits, Mikhail Larin, oscd.community. Source status: test; severity: medium. Source dates: 2020-10-19 / 2022-01-12.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f2535b8e042276376b7f69b2f05fa1d9d76820c715fb1fdbfe3b2f22daba94b2

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: File Time Attribute Change
id: 88c0f9d8-30a8-4120-bb6b-ebb54abcf2a0
status: test
description: Detect file time attribute change to hide new or changes to existing files
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md
author: Igor Fits, Mikhail Larin, oscd.community
date: 2020-10-19
modified: 2022-01-12
tags:
    - attack.stealth
    - attack.t1070.006
logsource:
    product: macos
    category: process_creation
detection:
    selection:
        Image|endswith: '/touch'
        CommandLine|contains:
            - '-t'
            - '-acmr'
            - '-d'
            - '-r'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.006/T1070.006.md