Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects when a GitHub organization is removed from an enterprise.
Detects when a GitHub organization is transferred to another enterprise account. An adversary may attempt to transfer a GitHub organization to an enterprise account they control in order to steal data.
Detects when a GitHub repository is transferred.
Detects when changes are made to a GitHub organization's fine-grained Personal Access Token approval policy.
Detects when a GitHub repository is archived or deleted.
Detects when an SSH deploy key is added or modified in a GitHub repository. A compromised or unauthorized deploy key could allow malicious actors to push unauthorized changes into production environments, potentially bypassing code reviews and testing procedures. This could lead to the introduction of backdoors, malware, or the exfiltration of sensitive data.
Detects when the visibility for a GitHub repository is changed to public.
Detects when a secret is found in a GitHub repository. Adversaries may attempt to harvest leaked/exposed secrets to further infiltrate their target's environment, maintain access, or steal data.
Detects when changes are made to a GitHub enterprise or organization's Single Sign-On (SSO) configuration.
Detects when a user is blocked from accessing repositories within a GitHub organization.
Detects when a user is unblocked from accessing repositories within a GitHub organization.
This rule detects successful events where a user is added to a group within Office 365. It specifically looks for 'GROUP_MODIFICATION' events with the product event type 'Add member to group.' originating from 'Office 365' by 'Microsoft' where the security action was 'ALLOW'. The rule also identifies the user performing the action, the group name, group GUID, and the user who was added to the group.
Detects when a group is attempted to be created but fails in Office 365. This could be due to insufficient permissions or other errors
Detects authentication to O365 followed by a non-interactive sign-ins that aligns to suspicious activity.
The authorization policy of Entra ID (User Settings) contains information about who can create applications, invite guest users and more. It's not something that is generally modified or reviewed except by administrators so it's worth knowing who may be requesting this endpoint.
Identify the use GraphRunner's Invoke-DumpApps function to collect applications and external apps as well as users that consented to permissions in their apps.
This detects when a 401 Unauthorized status is received on multiple attempts of the same file when attempting to download from OneDrive and may indicate a permissions issue for the user.
This detects when a 401 Unauthorized status code is returned when attempting to download multiple unique files from OneDrive and may indicate a permissions issue for the user.
Identify the enumeration of members within groups in Entra ID. This is based on GraphRunner Get-SecurityGroups function behavior so modifications may be needed for other scenarios
This detects when the groups endpoint is called in the Graph API. GraphRunner contains a function called Get-DynamicGroups but other tools may as well.
Detects when a group is created in Office 365.
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