New onmicrosoft domain added to tenant

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This detection looks for new onmicrosoft domains being added to a tenant. An attacker who compromises a tenant may register a new onmicrosoft domain in order to masquerade as a service provider for launching phishing campaigns. Domain additions are not a common occurrence and users should validate that the domain was added by a legitimate user, with a legitimate purpose.

Attribute Value
Type Analytic Rule
Solution Microsoft Entra ID
ID 4f42b94f-b210-42d1-a023-7fa1c51d969f
Severity Medium
Status Available
Kind Scheduled
Tactics ResourceDevelopment
Techniques T1585.003
Required Connectors AzureActiveDirectory
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Selection Criteria Transformations Ingestion API Lake-Only
AuditLogs OperationName in "Add unverified domain,Add verified domain" ?

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