Detectionmediumtest

Azure Network Security Configuration Modified or Deleted

Identifies when a network security configuration is modified or deleted.

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Launch

Austin SongerCreated Sun Aug 08Updated Tue Aug 23d22b4df4-5a67-4859-a578-8c9a0b5af9dfcloud

Log Source

Azureactivitylogs

ProductAzure← raw: azure

Serviceactivitylogs← raw: activitylogs

Detection Logic

detection:
    selection:
        operationName:
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/WRITE
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/DELETE
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/SECURITYRULES/WRITE
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/SECURITYRULES/DELETE
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/JOIN/ACTION
            - MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/PROVIDERS/MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/WRITE
    condition: selection

False Positives

Network Security Configuration 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.

Network Security Configuration 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

Rule Metadata

Rule ID

d22b4df4-5a67-4859-a578-8c9a0b5af9df

Status

test

Level