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Regin is a highly sophisticated cyber-espionage malware platform widely regarded as one of the most advanced stealth intrusion frameworks publicly documented. It is associated with long-duration intelligence collection operations against high-value strategic targets and is frequently cited alongside other elite espionage toolsets such as Equation, Duqu 2.0, ProjectSauron, and the Lambert/Longhorn families because of its complexity, modularity, and operational security. Regin has been referenced as a benchmark for advanced, hard-to-detect campaigns employing long-lived implants and specialized post-compromise capabilities. Regin is best understood as a modular espionage framework rather than a single monolithic implant. Its tradecraft is characterized by covert persistence, deep post-exploitation functionality, and the ability to support tailored intelligence-gathering operations over extended periods. Public reporting consistently places it in the category of nation-state-grade tooling used for clandestine access and collection against strategic victims.
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28 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
11 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Mentioned as an example of complex tooling/long-running campaigns; no specific activity details provided in this report excerpt.
Referenced only as a comparison point for sophistication.
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.