arcanedoor_threat_actor
ArcaneDoor is a state-sponsored threat actor attributed by CISA and partner agencies to the ArcaneDoor attack campaign in 2023 and 2024. The actor has targeted Cisco ASA and Firepower firewalls and, in 2025, was linked to active exploitation of CVE-2025-20333 and CVE-2025-20362 as zero-days. Reported tradecraft includes use of custom malware to disable logging and prevent crash dump creation, as well as modification of the ROMMON program to establish persistence for a custom backdoor. No additional aliases or sub-groups are directly identified in the provided content.
Know when an actor pivots toward your sector
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Recent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.