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FortiGate - New Firewall Policy Added

Detects the addition of a new firewall policy on a Fortinet FortiGate Firewall.

MITRE ATT&CK

T1562
defense-evasion

Detection Query

selection:
  action: Add
  cfgpath: firewall.policy
condition: selection

Author

Marco Pedrinazzi @pedrinazziM (InTheCyber)

Created

2025-11-01

Data Sources

fortigateevent

Platforms

fortigate

References

Tags

attack.defense-evasionattack.t1562
Raw Content
title: FortiGate - New Firewall Policy Added
id: f24ab7a8-f09a-4319-82c1-915586aa642b
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
tags:
    - attack.defense-evasion
    - attack.t1562
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