Detectionmediumtest

Azure Firewall Modified or Deleted

Identifies when a firewall is created, modified, or deleted.

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

Launch

Austin SongerCreated Sun Aug 08Updated Tue Aug 23512cf937-ea9b-4332-939c-4c2c94baadcdcloud

Log Source

Azureactivitylogs

ProductAzure← raw: azure

Serviceactivitylogs← raw: activitylogs

Detection Logic

detection:
    selection:
        operationName:
            - MICROSOFT.NETWORK/AZUREFIREWALLS/WRITE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/DELETE
    condition: selection

False Positives

Firewall being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.

Firewall modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

References

Resolving title…

learn.microsoft.com

MITRE ATT&CK

Tactics

TA0040 · Impact TA0005 · Defense Evasion

Sub-techniques

T1562.004 · Disable or Modify System Firewall

Rule Metadata

Rule ID

512cf937-ea9b-4332-939c-4c2c94baadcd

Status