Time Travel Debugging Utility Usage - Image — Sigma Rule

Rule metadata and linked tags

Author: Ensar Şamil, @sblmsrsn, @oscd_initiative. Source status: test; severity: high. Source dates: 2020-10-06 / 2022-12-02.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 46c622da254d861aa9d4f931dd39db52d4add182f63239cb8ce1a793d064e227

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 - Image
id: e76c8240-d68f-4773-8880-5c6f63595aaf
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: 2022-12-02
tags:
    - attack.credential-access
    - attack.stealth
    - attack.t1218
    - attack.t1003.001
logsource:
    product: windows
    category: image_load
detection:
    selection:
        ImageLoaded|endswith:
            - '\ttdrecord.dll'
            - '\ttdwriter.dll'
            - '\ttdloader.dll'
    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