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Chaos ransomware is a ransomware-as-a-service (RaaS) operation first observed in March 2025. Also tracked as Chaos RaaS, Chaos ransomware group, Chaos ransomware operators, and Chaos ransomware affiliates, it has operated a dedicated leak site and used publication countdowns to pressure alleged victims into negotiations. The operation has claimed intrusions affecting organizations in manufacturing and health care, including entities in the United States, the United Kingdom, and the Netherlands. Chaos has claimed to release stolen sensitive data, including protected health information, in support of its extortion activity. Technical reporting has associated the group with msaRAT, a remote-access tool using headless-browser automation, Chrome DevTools Protocol interactions, and TURN-relay-based communications. Chaos is financially motivated.
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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.
26 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
7 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducted a ransomware attack against Steelhaus Inc. (steelhausinc.com), a U.S.-based manufacturing organization.
Claimed ransomware attack and data-leak incident affecting Glasfloss, alleging exposure of 402 GB of corporate, financial, and employee records.
Conducted a ransomware attack against ArtiFlex Manufacturing LLC, a U.S.-based precision sheet-metal contract manufacturer.
Reportedly conducted a ransomware attack against Mankato Clinic, a US healthcare organization.
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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.