Every published rule
Every rule shows the reporting behind it, the telemetry it needs and where it falls short — before it costs you anything.
67 rules
Azure risk detection: Malicious IP sign-in risk event based on sign-in failure rate
Flags Azure risk events for sign-ins associated with malicious IPs using maliciousIPAddress failure-rate indications.
sigmaCloudhigh2023-09-07Azure Entra sign-in risk: Unfamiliar sign-in properties
Alerts on Azure risk events where sign-in properties are marked unfamiliar compared to a user’s historical patterns.
sigmaCloudhigh2023-09-03Azure SAML Token Issuer Anomaly via riskdetection
Flags Azure risk events where a SAML token’s issuer and claims look anomalous or attacker-like.
sigmaCloudhigh2023-09-03Azure Entra suspicious browser risk events across multiple tenants and countries
Flags Azure suspicious browser risk events tied to anomalous sign-ins across tenants and countries from the same browser.
sigmaCloudhigh2023-09-03Azure Entra ID risk event: successful password spray detection
Flags Azure Entra ID risk events indicating a successful password spray attempt.
sigmaCloudhigh2023-09-03Azure Entra ID sign-in risk: new country (riskEventType newCountry)
Flags Azure AD risk events where a sign-in is assessed as originating from a new country for the user.
sigmaCloudhigh2023-09-03Azure Identity Risk: Sign-ins from Malware-Infected IP Addresses
Flags Azure sign-in risk events originating from malware-infected IP addresses linked to bot-server communication.
sigmaCloudhigh2023-09-03Azure AD LeakedCredentials Risk Event Indicates User Credential Exposure
Alerts on Azure AD risk events indicating user credentials were leaked (riskEventType: leakedCredentials).
sigmaCloudhigh2023-09-03Azure risk event: Suspicious inbox manipulation rules that delete or move messages or folders
Alerts on Azure risk events for suspicious inbox rules that delete or move mailbox items.
sigmaCloudhigh2023-09-03Azure Risk Event: Suspicious Inbox Forwarding
Alerts on Azure Identity Protection risk events indicating inbox forwarding to an external address.
sigmaCloudhigh2023-09-03Azure AD User Login Risk: Impossible Travel from Distant Locations
Flags Azure Entra risk events tagged as impossibleTravel indicating implausible geographic sign-in travel within a short time.
sigmaCloudhigh2023-09-03Azure Entra ID Identity Protection Unlikely Travel Risk Events
Alerts on unlikelyTravel risk events tied to geographically distant sign-ins and potential deviation from user travel history.
sigmaCloudhigh2023-09-03Azure RiskDetection flags riskyIPAddress from anonymous proxy IP addresses
Alerts when Azure reports user activity linked to a risky anonymous proxy IP address.
sigmaCloudhigh2023-09-03Azure Entra ID anomalous user activity risk event
Alerts on Azure AD risk events indicating anomalous user activity via riskEventType=anomalousUserActivity.
sigmaCloudhigh2023-09-03Azure Entra ID Riskdetection: Anonymous IP Address sign-in risk events
Detects Azure sign-in risk events labeled as anonymized/anonymous IP addresses.
sigmaCloudhigh2023-08-22Azure risk detection: anomalousToken risk events
Flags Azure Entra ID risk events indicating anomalous token lifetime or use from unfamiliar locations.
sigmaCloudhigh2023-08-07AWS CloudTrail: S3 Browser Creates IAM User or Access Key
Alerts on CloudTrail IAM CreateUser/CreateAccessKey actions initiated by a "S3 Browser" user agent.
sigmaCloudhigh2023-05-17AWS CloudTrail: S3 Browser creates inline IAM policy with default bucket placeholder
Detects S3 Browser–initiated IAM PutUserPolicy requests that include a templated S3 bucket placeholder in the inline policy.
sigmaCloudhigh2023-05-17AWS CloudTrail: S3 Browser creating IAM LoginProfiles after querying GetLoginProfile
Flags CloudTrail IAM GetLoginProfile and CreateLoginProfile activity initiated by an S3 Browser user agent.
sigmaCloudhigh2023-05-17Azure Sign-in Success with Legacy Client User-Agent Indicators (MFA Bypass Suspicion)
Alerts on successful Azure sign-ins using legacy client user-agent markers that may indicate MFA bypass attempts.
sigmaCloudhigh2023-03-20