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Detectionmediumtest

Azure Network Firewall Policy Modified or Deleted

Identifies when a Firewall Policy is Modified or Deleted.

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Austin SongerCreated Thu Sep 02Updated Tue Aug 2383c17918-746e-4bd9-920b-8e098bf88c23cloud
Log Source
Azureactivitylogs
ProductAzure← raw: azure
Serviceactivitylogs← raw: activitylogs
Detection Logic
Detection Logic1 selector
detection:
    selection:
        operationName:
            - MICROSOFT.NETWORK/FIREWALLPOLICIES/WRITE
            - MICROSOFT.NETWORK/FIREWALLPOLICIES/JOIN/ACTION
            - MICROSOFT.NETWORK/FIREWALLPOLICIES/CERTIFICATES/ACTION
            - MICROSOFT.NETWORK/FIREWALLPOLICIES/DELETE
    condition: selection
False Positives

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

References
1
Resolving title…
learn.microsoft.com
MITRE ATT&CK
Rule Metadata
Rule ID
83c17918-746e-4bd9-920b-8e098bf88c23
Status
test
Level
medium
Type
Detection
Created
Thu Sep 02
Modified
Tue Aug 23
Author
Austin Songer
Path
rules/cloud/azure/activity_logs/azure_network_firewall_policy_modified_or_deleted.yml
Raw Tags
attack.impactattack.defense-evasionattack.t1562.007
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