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Merge pull request #1982 from austinsonger/azure_network_firewall_policy_modified_or_deleted.yml

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azure_network_firewall_policy_modified_or_deleted.yml
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title: Azure Network Firewall Policy Modified or Deleted
id: 83c17918-746e-4bd9-920b-8e098bf88c23
description: Identifies when a Firewall Policy is Modified or Deleted.
author: Austin Songer @austinsonger
status: experimental
date: 2021/09/02
references:
- https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
logsource:
service: azure.activitylogs
detection:
selection:
properties.message:
- MICROSOFT.NETWORK/FIREWALLPOLICIES/WRITE
- MICROSOFT.NETWORK/FIREWALLPOLICIES/JOIN/ACTION
- MICROSOFT.NETWORK/FIREWALLPOLICIES/CERTIFICATES/ACTION
- MICROSOFT.NETWORK/FIREWALLPOLICIES/DELETE
condition: selection
level: medium
tags:
- attack.impact
falsepositives:
- 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.