Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
52 lines
3.0 KiB
YAML
52 lines
3.0 KiB
YAML
title: Windows Event Auditing Disabled
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id: 69aeb277-f15f-4d2d-b32a-55e883609563
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related:
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- id: ab4561b1-6c7e-48a7-ad08-087cfb9ce8f1
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type: derived
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status: test
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description: |
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Detects scenarios where system auditing (i.e.: Windows event log auditing) is disabled.
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This may be used in a scenario where an entity would want to bypass local logging to evade detection when Windows event logging is enabled and reviewed.
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Also, it is recommended to turn off "Local Group Policy Object Processing" via GPO, which will make sure that Active Directory GPOs take precedence over local/edited computer policies via something such as "gpedit.msc".
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Please note, that disabling "Local Group Policy Object Processing" may cause an issue in scenarios of one off specific GPO modifications - however, it is recommended to perform these modifications in Active Directory anyways.
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references:
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- https://docs.google.com/presentation/d/1dkrldTTlN3La-OjWtkWJBb4hVk6vfsSMBFBERs6R8zA/edit
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author: '@neu5ron, Nasreddine Bencherchali (Nextron Systems)'
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date: 2017-11-19
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modified: 2023-11-15
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tags:
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- attack.defense-evasion
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- attack.t1562.002
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logsource:
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product: windows
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service: security
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definition: dfd8c0f4-e6ad-4e07-b91b-f2fca0ddef64
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detection:
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selection:
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EventID: 4719
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AuditPolicyChanges|contains:
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- '%%8448' # This is "Success removed"
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- '%%8450' # This is "Failure removed"
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filter_main_guid:
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# Note: We filter these GUID to avoid alert duplication as these are covered by ab4561b1-6c7e-48a7-ad08-087cfb9ce8f1
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SubcategoryGuid:
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- '{0CCE9210-69AE-11D9-BED3-505054503030}' # Audit Security State Change
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- '{0CCE9211-69AE-11D9-BED3-505054503030}' # Audit Security System Extension
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- '{0CCE9212-69AE-11D9-BED3-505054503030}' # Audit System Integrity
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- '{0CCE9215-69AE-11D9-BED3-505054503030}' # Audit Logon
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- '{0CCE9217-69AE-11D9-BED3-505054503030}' # Audit Account Lockout
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- '{0CCE921B-69AE-11D9-BED3-505054503030}' # Audit Special Logon
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- '{0CCE922B-69AE-11D9-BED3-505054503030}' # Audit Process Creation
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- '{0CCE922F-69AE-11D9-BED3-505054503030}' # Audit Audit Policy Change
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- '{0CCE9230-69AE-11D9-BED3-505054503030}' # Audit Authentication Policy Change
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- '{0CCE9235-69AE-11D9-BED3-505054503030}' # Audit User Account Management
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- '{0CCE9236-69AE-11D9-BED3-505054503030}' # Audit Computer Account Management
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- '{0CCE9237-69AE-11D9-BED3-505054503030}' # Audit Security Group Management
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- '{0CCE923F-69AE-11D9-BED3-505054503030}' # Audit Credential Validation
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- '{0CCE9240-69AE-11D9-BED3-505054503030}' # Audit Kerberos Service Ticket Operations
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- '{0CCE9242-69AE-11D9-BED3-505054503030}' # Audit Kerberos Authentication Service'
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condition: selection and not 1 of filter_main_*
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falsepositives:
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- Unknown
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level: low # Increase this after a testing period in your environment
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