Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects a sequence of activity where an anonymous AWS token is requested via a specific API path, followed within 15 minutes by a token minting call from the same source IP. This behavior is indicative of a token-theft or privilege escalation chain.
This rule monitors for various types of events (user logons, network connections, API audits, cloud app events, and email traffic) originating from a specific CIDR block (160.79.104.0/21), which is flagged as suspicious or unauthorized.
Detects high-frequency creation and revocation of service principal credentials, indicating potential malicious credential cycling, or unusual bursts of service account JWT/refresh token rotation across multiple IP addresses, which may indicate an attempt to evade detection or maintain persistence.
Detects high-volume, potentially programmatic search activity in Microsoft 365 SharePoint, characterized by iterative pagination requests using the 'indexdocid' parameter. This behavior may indicate an automated effort to crawl or systematically exfiltrate document metadata or content via the SharePoint search interface, often associated with post-exploitation discovery or unauthorized data collection.
Detects high-volume, potentially programmatic search activity in Microsoft 365 SharePoint, characterized by iterative pagination requests using the 'indexdocid' parameter. This behavior may indicate an automated effort to crawl or systematically exfiltrate document metadata or content via the SharePoint search interface, often associated with post-exploitation discovery or unauthorized data collection.
Detects anomalous, high-volume email access patterns (more than 200 mail items accessed per hour) by specific Client or Azure AD App IDs, which may indicate automated data collection or exfiltration by an adversary using compromised or unauthorized applications.
Detects anomalous, high-volume email access patterns (more than 200 mail items accessed per hour) by specific Client or Azure AD App IDs, which may indicate automated data collection or exfiltration by an adversary using compromised or unauthorized applications.
This rule detects scenarios where a device registration event occurs within 15 minutes of a device-code authentication sign-in for the same user. This pattern is indicative of potential account manipulation where an adversary registers their own device to an existing account to maintain persistent access or bypass multi-factor authentication (MFA).
This rule detects scenarios where a device registration event occurs within 15 minutes of a device-code authentication sign-in for the same user. This pattern is indicative of potential account manipulation where an adversary registers their own device to an existing account to maintain persistent access or bypass multi-factor authentication (MFA).
Detects anomalous administrative activity within Microsoft Exchange by identifying accounts performing multiple suspicious operations within a short timeframe. This rule flags activities like modifying transport rules, virtual directories, or management role assignments, which are often indicative of malicious persistence or configuration tampering, while excluding known authorized service accounts.
Detects high-volume mailbox access (exceeding 50 items) performed by a specific API/Client ID pair associated with known mailbox exfiltration tools. This behavior is indicative of unauthorized automated data collection or harvesting from an Office 365 Exchange environment.
Detects anomalous privilege reconnaissance activity where an account queries Microsoft Graph API endpoints (such as directory roles or member/transitive member lists) multiple times in a short window, which may indicate a compromised account attempting to enumerate Global or Exchange Administrator role memberships.
Detects anomalous privilege reconnaissance activity where an account queries Microsoft Graph API endpoints (such as directory roles or member/transitive member lists) multiple times in a short window, which may indicate a compromised account attempting to enumerate Global or Exchange Administrator role memberships.
Detects high-frequency, multi-action data access events through the Microsoft Graph API, indicative of automated exfiltration of Exchange, SharePoint/OneDrive, and Teams data. This behavior is consistent with an adversary using stolen OAuth access tokens to perform bulk enumeration and extraction of sensitive cloud-hosted data.
Detects high-frequency, multi-action data access events through the Microsoft Graph API, indicative of automated exfiltration of Exchange, SharePoint/OneDrive, and Teams data. This behavior is consistent with an adversary using stolen OAuth access tokens to perform bulk enumeration and extraction of sensitive cloud-hosted data.
Detects when a user registers or adds a new device to Microsoft Entra ID (Azure AD) that has not been previously seen used by that user within the last 7 days. This behavior can indicate an adversary attempting to enroll an unauthorized device to bypass MFA or maintain persistent access.
Detects high-frequency S3 object upload activity (PutObject/CompleteMultipartUpload) originating from the Rclone tool, a common indicator of potential data exfiltration to cloud storage.
This rule detects potentially malicious outbound email activity sent through Microsoft Graph or Exchange APIs using unknown or infrequently seen client applications. It identifies scenarios where these applications send emails containing financial keywords (e.g., 'invoice', 'wire transfer'), which is a common indicator of Business Email Compromise (BEC) and 'EvilTokens' style mail-vault activity where attackers intercept or inject themselves into existing financial threads.
Detects anomalous privilege reconnaissance activity where an account queries Microsoft Graph API endpoints (such as directory roles or member/transitive member lists) multiple times in a short window, which may indicate a compromised account attempting to enumerate Global or Exchange Administrator role memberships.
Detects high-frequency, multi-action data access events through the Microsoft Graph API, indicative of automated exfiltration of Exchange, SharePoint/OneDrive, and Teams data. This behavior is consistent with an adversary using stolen OAuth access tokens to perform bulk enumeration and extraction of sensitive cloud-hosted data.
This rule monitors Office 365 SharePoint file operations and search queries for patterns indicative of automated discovery and exfiltration of sensitive content. It specifically identifies high-frequency search queries involving wildcard parameters used in SharePoint content indexing, which may suggest an adversary is systematically crawling or enumerating organizational documents.
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