FortiGate - New Firewall Policy Added

Title: FortiGate - New Firewall Policy Added
Status: experimental
Description:Detects the addition of a new firewall policy on a Fortinet FortiGate Firewall.
References:
  -https://www.fortiguard.com/psirt/FG-IR-24-535
  -https://docs.fortinet.com/document/fortigate/7.6.4/fortios-log-message-reference/398/event
  -https://docs.fortinet.com/document/fortigate/7.6.4/cli-reference/333889629/config-firewall-policy
  -https://docs.fortinet.com/document/fortigate/7.6.4/fortios-log-message-reference/44547/44547-logid-event-config-objattr
Author: Marco Pedrinazzi (@pedrinazziM) (InTheCyber)
Date: 2025-11-01
modified:2026-05-04
Tags:

• -'attack.defense-impairment'
• -'attack.t1686.002'

Logsource:

• product: fortigate
• service: event

Detection:
  selection:
    action: 'Add'
    cfgpath: 'firewall.policy'
  condition:selection
Falsepositives:
  -A firewall policy can be added for legitimate purposes.
Level: medium