ETW Logging Disabled For rpcrt4.dll

calendar Oct 23, 2025 · attack.persistence attack.defense-evasion attack.t1112 attack.t1562  ·
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Detects changes to the "ExtErrorInformation" key in order to disable ETW logging for rpcrt4.dll

Sigma rule (View on GitHub)

 1title: ETW Logging Disabled For rpcrt4.dll
 2id: 90f342e1-1aaa-4e43-b092-39fda57ed11e
 3status: test
 4description: Detects changes to the "ExtErrorInformation" key in order to disable ETW logging for rpcrt4.dll
 5references:
 6    - http://redplait.blogspot.com/2020/07/whats-wrong-with-etw.html
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022-12-09
 9modified: 2023-08-17
10tags:
11    - attack.persistence
12    - attack.defense-evasion
13    - attack.t1112
14    - attack.t1562
15logsource:
16    product: windows
17    category: registry_set
18detection:
19    selection:
20        TargetObject|endswith: '\Microsoft\Windows NT\Rpc\ExtErrorInformation'
21        Details:
22            # This is disabled by default for some reason
23            - 'DWORD (0x00000000)' # Off
24            - 'DWORD (0x00000002)' # Off with exceptions
25    condition: selection
26falsepositives:
27    - Unknown
28level: low

References

  • what`s wrong with Etw

    Disclaimer:  as I am aware that the given code examples can be dangerous for Etw-based EDR products - all code was made for least popular ve...


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