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Hydra2113claude
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Fix SigmaHQ validation issues on brute force correlation rule
- Add required metadata (status, description, author, date, level) to the base rule - Rename file with the required 'correlation_' prefix Passes: sigma check --fail-on-error --fail-on-issues with the repo validation config. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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rules/windows/builtin/security/win_security_susp_failed_logon_bruteforce_single_account.yml renamed to rules/windows/builtin/security/correlation_win_security_failed_logon_bruteforce_single_account.yml

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@@ -37,6 +37,18 @@ level: high
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title: Failed Logon Attempts For Single Account
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id: 28ed487c-6a7d-42ca-a121-608ce523856c
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name: failed_logon_attempts_4625
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status: experimental
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description: |
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Base rule that matches Windows failed logon events (EventID 4625). It is referenced by the
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"Brute Force Authentication Attempts For Single Account" correlation rule and is not intended
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to generate alerts on its own.
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references:
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- https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4625
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author: Hydra2113
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date: 2026-06-25
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tags:
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- attack.credential-access
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- attack.t1110
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logsource:
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product: windows
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service: security
@@ -48,3 +60,7 @@ detection:
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# (TargetUserName|endswith: '$'), known vulnerability scanners, or service accounts with
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# stale credentials - then update the condition to "selection and not filter".
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condition: selection
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falsepositives:
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- Users mistyping their password
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- Service accounts with stale/cached credentials after a password change
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level: informational

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