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THORIUM, also tracked as Nuclear Taurus, Tumbleweed Typhoon, and Bronze Vapor, is a China-nexus threat actor associated with the use of the Winnti malware family, including Linux variants deployed as backdoors. The actor has been linked to cloud-targeted intrusions involving ELF malware and is part of the broader cluster of Chinese intrusion activity that uses Winnti tooling. Reported operations include the deployment of Linux malware against cloud infrastructure, reflecting an ability to operate beyond traditional Windows-centric compromises and to target Linux-heavy enterprise and cloud environments. High-confidence reporting directly ties this actor to Winnti usage; additional targeting specifics, victim geography, and operational scope are not currently available from the supplied facts.
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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.
Attributed origin per open-source reporting.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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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.
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