Time Travel Debugging Utility Usage — Sigma Rule

Rule metadata and linked tags

Author: Ensar Şamil, @sblmsrsn, @oscd_initiative. Source status: test; severity: high. Source dates: 2020-10-06 / 2022-10-09.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 4d2ecb961faf6234fd03217e8b15de1551cf3e6d5c4cf516bbf9c37e17eb2411

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: Time Travel Debugging Utility Usage
id: 0b4ae027-2a2d-4b93-8c7e-962caaba5b2a
related:
    - id: e76c8240-d68f-4773-8880-5c6f63595aaf
      type: derived
status: test
description: Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Tttracer/
    - https://twitter.com/mattifestation/status/1196390321783025666
    - https://twitter.com/oulusoyum/status/1191329746069655553
author: 'Ensar Şamil, @sblmsrsn, @oscd_initiative'
date: 2020-10-06
modified: 2022-10-09
tags:
    - attack.credential-access
    - attack.stealth
    - attack.t1218
    - attack.t1003.001
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        ParentImage|endswith: '\tttracer.exe'
    condition: selection
falsepositives:
    - Legitimate usage by software developers/testers
level: high

Original YAML and metadata in JSON

False positives

• Legitimate usage by software developers/testers

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Tttracer/
• https://twitter.com/mattifestation/status/1196390321783025666
• https://twitter.com/oulusoyum/status/1191329746069655553