Github High Risk Configuration Disabled

Detects when a user disables a critical security feature for an organization.

Sigma rule (View on GitHub)

 1title: Github High Risk Configuration Disabled
 2id: 8622c92d-c00e-463c-b09d-fd06166f6794
 3status: test
 4description: Detects when a user disables a critical security feature for an organization.
 5author: Muhammad Faisal (@faisalusuf)
 6date: 2023/01/29
 7references:
 8    - https://docs.github.com/en/organizations/managing-oauth-access-to-your-organizations-data/disabling-oauth-app-access-restrictions-for-your-organization
 9    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#dependabot_alerts-category-actions
10    - https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/enabling-features-for-your-repository/managing-security-and-analysis-settings-for-your-repository
11tags:
12    - attack.credential_access
13    - attack.defense_evasion
14    - attack.persistence
15    - attack.t1556
16logsource:
17    product: github
18    service: audit
19    definition: 'Requirements: The audit log streaming feature must be enabled to be able to receive such logs. You can enable following the documentation here: https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-audit-log-streaming'
20detection:
21    selection:
22        action:
23            - 'org.advanced_security_policy_selected_member_disabled'
24            - 'org.disable_oauth_app_restrictions'
25            - 'org.disable_two_factor_requirement'
26            - 'repo.advanced_security_disabled'
27    condition: selection
28falsepositives:
29    - Approved administrator/owner activities.
30level: high

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