LoFP / 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.

Techniques

Sample rules

Azure Network Firewall Policy Modified or Deleted

source: sigma
technicques:
- t1562
- t1562.007

Description

Identifies when a Firewall Policy is Modified or Deleted.

Detection logic

condition: selection
selection:
  operationName:
  - MICROSOFT.NETWORK/FIREWALLPOLICIES/WRITE
  - MICROSOFT.NETWORK/FIREWALLPOLICIES/JOIN/ACTION
  - MICROSOFT.NETWORK/FIREWALLPOLICIES/CERTIFICATES/ACTION
  - MICROSOFT.NETWORK/FIREWALLPOLICIES/DELETE