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Storm is a ransomware threat actor name associated with multiple reported intrusions against organizations in the United States in 2026. Reported victims include entities in healthcare, manufacturing, legal services, and commercial security services, indicating opportunistic targeting across sectors rather than a narrowly specialized victim profile. Known reported victims include Liberty Healthcare Corporation, Southern Indiana Radiological Associates, Nelson Manufacturing, NCA Alarms, and EvansPetree. Available reporting directly supports Storm’s involvement in ransomware incidents and related data-breach activity. The observed operations indicate attacks against U.S.-based organizations, including healthcare providers and manufacturers, with impacts consistent with ransomware-driven extortion. High-confidence evidence in the available material does not establish the group’s origin, tooling lineage, affiliate structure, or any confirmed relationship to a nation-state sponsor. No corroborated sub-groups or alternate aliases beyond the name Storm are established in the supplied facts. Because the available evidence is limited to victim attributions in ransomware cases, Storm can be characterized at high confidence as a financially motivated ransomware actor targeting U.S. organizations, including healthcare and industrial enterprises.
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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.
1 distinct technique observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducting a ransomware attack against EvansPetree.
Conducting a ransomware attack against Liberty Healthcare Corporation.
Conducting a ransomware attack against Southern Indiana Radiological Associates, a healthcare organization in the United States.
Conducting a ransomware attack against Nelson Manufacturing.
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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.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.