Detectionhightest

Anomalous User Activity

Indicates that there are anomalous patterns of behavior like suspicious changes to the directory.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Mark Morowczynski, Gloria LeeCreated Sun Sep 03258b6593-215d-4a26-a141-c8e31c1299a6cloud

Log Source

Azureriskdetection

ProductAzure← raw: azure

Serviceriskdetection← raw: riskdetection

Detection Logic

detection:
    selection:
        riskEventType: 'anomalousUserActivity'
    condition: selection

False Positives

We recommend investigating the sessions flagged by this detection in the context of other sign-ins from the user.

References

MITRE ATT&CK

Tactics

Techniques

Rule Metadata

Rule ID

258b6593-215d-4a26-a141-c8e31c1299a6

Status

test

Level

high

Type

Detection

Created

Sun Sep 03

Author

Path

rules/cloud/azure/identity_protection/azure_identity_protection_anomalous_user.yml

Raw Tags

attack.privilege-escalationattack.t1098attack.persistence