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APT33 is an Iran-linked threat actor commonly tracked as a state-aligned espionage and disruptive operations group. It is associated with Iranian cyber activity targeting organizations of strategic interest, particularly in sectors tied to national infrastructure and regional geopolitical tensions. Security reporting commonly places APT33 among the Iranian intrusion sets that organizations should expect during periods of crisis, especially where identity-centric intrusions and long-standing footholds may be activated. APT33 is associated with operations against sectors such as energy, finance, telecommunications, and supply-chain-linked environments. Its tradecraft is consistent with broader Iranian intrusion activity that emphasizes phishing, credential theft, remote access, persistence, and the use of disruptive tooling including wipers. Recent defensive guidance has specifically highlighted the risk of identity-focused cloud intrusions from APT33 and related Iran-linked actors, indicating an evolution beyond traditional network compromise toward abuse of enterprise identity and access infrastructure. APT33 is widely treated as part of the Iranian state cyber ecosystem rather than a financially motivated criminal enterprise. Its operations align most closely with espionage and strategic disruption objectives, including pre-positioning in victim environments, maintaining persistent access, and enabling follow-on effects during periods of heightened regional conflict. APT33 is also known by the alias Elfin in some vendor reporting.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.