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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 |
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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