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Detection rules › Sigma

Time Travel Debugging Utility Usage

Status
test
Severity
high
Log source
category process_creation, product windows
Author
Ensar Şamil, @sblmsrsn, @oscd_initiative
Source
github.com/SigmaHQ/sigma

Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.

Known false positives

  • Legitimate usage by software developers/testers

MITRE ATT&CK coverage

TacticTechniques
Stealth
Credential Access

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 1: Process creation
Security-AuditingEvent ID 4688: A new process has been created.

Rule body

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

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    ParentImage|endswith: '\tttracer.exe'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
ParentImageends_with
  • \tttracer.exe
field:"ParentImage" kind:ends_with value:"\tttracer.exe"