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This detection uses AzureActivity logs (Administrative category) to identify the creation or update of a server instance in an Microsoft Entra ID Hybrid Health AD FS service. A threat actor can create a new AD Health ADFS service and create a fake server instance to spoof AD FS signing logs. There is no need to compromise an on-premises AD FS server. This can be done programmatically via HTTP requests to Azure. More information in this blog: https://o365blog.com/post/hybridhealthagent/
| Attribute | Value |
|---|---|
| Type | Analytic Rule |
| Solution | Azure Activity |
| ID | 88f453ff-7b9e-45bb-8c12-4058ca5e44ee |
| Severity | Medium |
| Status | Available |
| Kind | Scheduled |
| Tactics | DefenseEvasion |
| Techniques | T1578 |
| Required Connectors | AzureActivity |
| Source | View on GitHub |
This content item queries data from the following tables:
| Table | Transformations | Ingestion API | Lake-Only |
|---|---|---|---|
AzureActivity |
? | ✗ | ? |
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