Nasreddine Bencherchali
36 lines
1.8 KiB
YAML
36 lines
1.8 KiB
YAML
title: Github Outside Collaborator Detected
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id: eaa9ac35-1730-441f-9587-25767bde99d7
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status: experimental
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description: |
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Detects when an organization member or an outside collaborator is added to or removed from a project board or has their permission level changed or when an owner removes an outside collaborator from an organization or when two-factor authentication is required in an organization and an outside collaborator does not use 2FA or disables 2FA.
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author: Muhammad Faisal
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date: 2023/01/20
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references:
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- https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#audit-log-actions
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- https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-two-factor-authentication-for-your-organization/requiring-two-factor-authentication-in-your-organization
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tags:
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- attack.persistence
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- attack.collection
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- attack.t1098.001
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- attack.t1098.003
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- attack.t1213.003
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logsource:
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product: github
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service: audit
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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'
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detection:
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selection:
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action:
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- 'project.update_user_permission'
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- 'org.remove_outside_collaborator'
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condition: selection
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fields:
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- 'action'
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- 'actor'
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- 'org'
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- 'actor_location.country_code'
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falsepositives:
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- Validate the actor if permitted to access the repo.
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- Validate the Multifactor Authentication changes.
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level: medium
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