Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

3,865 detections

Monitor and alert for Bitlocker key retrieval.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Monitor and alert for changes to the device registration policy.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Monitor and alert for users added to device admin roles.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when a configuration change is made to an applications AppID URI.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when a configuration change is made to an applications URI.
URIs for domain names that no longer exist (dangling URIs), not using HTTPS, wildcards at the end of the domain, URIs that are no unique to that app, or URIs that point to domains you do not control should be investigated.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Change to authentication method could be an indicator of an attacker adding an auth method to the account so they can have continued access.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when a user that doesn't have permissions to invite a guest user attempts to invite one.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects the change of user type from "Guest" to "Member" for potential elevation of privilege.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when PIM alerts are set to disabled.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when changes are made to PIM roles
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when a user is added to a privileged role.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects when a new admin is created.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detect when a user has reset their password in Azure AD
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Identifies that users were active from an IP address that has been identified as an anonymous proxy IP address.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Identifies two sign-ins originating from geographically distant locations, where at least one of the locations may also be atypical for the user, given past behavior.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Identifies user activities originating from geographically distant locations within a time period shorter than the time it takes to travel from the first location to the second.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects suspicious rules that delete or move messages or folders are set on a user's inbox.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Detects sign-ins from new countries. The detection considers past activity locations to determine new and infrequent locations.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Indicates anomalous behavior based on suspicious sign-in activity across multiple tenants from different countries in the same browser
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Indicates user activity that is unusual for the user or consistent with known attack patterns.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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Identifies when an account hasn't signed in during the past n number of days.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
6 months ago
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