Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
3,004 detections
Filters
Last updated
All Time
Detection languages
1,442
479
390
321
192
Contributors
650
521
286
272
264
Categories
20,443
11,831
5,875
5,151
4,864
3,004
Platforms
1,199
673
623
512
218
Products / Services
880
726
311
257
229
MITRE Techniques
1,661
1,109
905
468
464
CVEs
6
5
5
5
5
IDS Classtypes
49
13
6
3
2
IDS Protocols
40
31
1
This rule detects when a single user adds more than 4 members to the same Office 365 group within a 5-minute window. It specifically looks for successful 'Add member to group' events in Office 365 audit logs, focusing on the `GROUP_MODIFICATION` event type. The threshold of 4 users added is configurable.
This rule detects when a user is successfully removed from a group within Office 365. It specifically looks for 'GROUP_MODIFICATION' events with the product event type 'Remove member from group.' from Microsoft Office 365, where the action was allowed.
Detects when a GitHub application is installed within an organization. An untrusted application can be installed and granted permissions to access data within a GitHub organization.
Detects when the Single Sign-On (SSO) recovery codes are accessed for a GitHub enterprise or organization. An adversary may attempt to access or steal SSO recovery codes in order to maintain access to their target's GitHub environment.
Detects when an invitation to join a GitHub enterprise or organization is sent to a non-company email address. This rule can be customized to alert you when a GitHub invitation is sent to an unexpected domain i.e. not one of your company's domains used for email.
Detects when a GitHub repository is transferred.
Detects when the visibility for a GitHub repository is changed to public.
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 the hard deletion of an application within Entra ID (formerly Azure AD). A 'hard delete' means the application is permanently removed without a recovery option, which can indicate malicious activity such as an attacker attempting to remove traces of their presence or disrupt services by deleting critical applications.
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.
This rule detects when an application in Entra ID (formerly Azure AD) is restored. This action implies that the application was previously soft-deleted and is now being recovered. This could be an administrative action to recover a mistakenly deleted application or could indicate an attempt to restore a malicious application that was previously removed.
This rule detects when an application is deleted in Entra ID (formerly Azure AD). This action is a soft delete, meaning the application can still be recovered. Detection is based on specific event types and product names within Azure AD audit logs.
Detects when a group is successfully deleted in Office 365. This rule specifically looks for events where the event type is 'GROUP_DELETION', the product event type is 'Delete group.', the product is 'Office 365', the vendor is 'Microsoft', and the security result action is 'ALLOW'. It also tracks the user responsible for the deletion.
Detects when a new group is successfully created within Office 365. This rule specifically looks for events indicating a 'GROUP_CREATION' event type with a product event type of 'Add group.' originating from 'Office 365' by 'Microsoft', where the action was 'ALLOW'. This can help identify legitimate administrative actions or potentially unauthorized group creation.
Detects when a group is attempted to be created but fails in Office 365. This could be due to insufficient permissions or other errors
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 when the http delete method is being called within the Microsoft Graph API.
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
Detects when a group is created in Office 365.
Detects when a user is added to a group in Office 365.
Page 135 of 144