216.73.217.172

CASTLETAP

The MITRE Corporation · Published 16/06/2025 22:20 · Modified 27/03/2026 01:03 Family

Essential information

Confidence
100/100
Is family
Yes
Published
16/06/2025 22:20
Modified
27/03/2026 01:03
Revoked
No
Author / Source
The MITRE Corporation
Related entities
18 attack patterns (mitre), 2 intrusion sets (apt), 12 sectors, 4 countries, 30 indicators, 1 vulnerabilities (cve)

Description

[CASTLETAP](https://attack.mitre.org/software/S1224) is an ICMP port knocking backdoor that has been installed on compromised FortiGate firewalls by [UNC3886](https://attack.mitre.org/groups/G1048).(Citation: Mandiant Fortinet Zero Day)

Marking (TLP)

TLP:CLEAR Copyright 2015-2025, The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.

External references

Related entities

Attack patterns, malware, vulnerabilities, indicators, intrusion sets and other entities linked to this malware.