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high advisory

Windows Time Travel Debugging Utility abuse

Adversaries may abuse the legitimate Microsoft Time Travel Debugging utility (tttracer.exe) to execute arbitrary processes or dump sensitive process memory such as lsass.exe.

Triage facts

Revision 1
Applicability
Windows
Evidence
Unknown
Severity
High
Action
Elevated
Sources
2 public sources
Freshness
Revision 1Nov 10, 02:51 UTC
Detection
1 rule
Source quality
A1Likely

The Time Travel Debugging (TTD) utility, tttracer.exe, is a legitimate Microsoft tool used for debugging. Adversaries can leverage this binary to execute malicious code under the context of the tracer or to capture memory dumps of protected processes, including lsass.exe, to facilitate credential access.

Impact

Successful abuse of tttracer.exe can lead to unauthorized execution of arbitrary binaries or the exfiltration of credentials from memory by dumping the Local Security Authority Subsystem Service (lsass.exe).

Recommendation

  • Deploy the provided Sigma rule to monitor for suspicious child processes spawned by tttracer.exe.
  • Audit administrative access to developer tools and debuggers within the environment.
  • Investigate any instances of tttracer.exe being executed in non-development production environments.

Immediate actions

Deploy Sigma rule to detect tttracer.exe activity

Detection Engineering 24h

Mitigations

Restrict access to tttracer.exe on production assets via AppLocker or WDAC

medium_term IT Operations

T1218

Detection coverage 1

Detect Time Travel Debugging Utility Child Processes

high

Detects usage of the Time Travel Debugging utility (tttracer.exe) spawning child processes, which can be used to execute malicious payloads or dump process memory.

sigma tactics: credential_access techniques: T1003.001, T1218 sources: process_creation, windows

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