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Storm-0381 is a Microsoft-tracked financially motivated cybercrime cluster associated with Magniber ransomware activity and notable use of malvertising for initial access. Microsoft has linked the cluster to Russian cybercrime. The actor has been observed relying heavily on malicious online advertising to drive victims to fake software downloads, a tactic used to establish footholds that can lead to ransomware deployment. Storm-0381 is tracked under Microsoft's temporary Storm designation, which is used for emerging or not-yet-fully-classified activity clusters. The group is associated with financially motivated operations rather than espionage. High-confidence reporting ties Storm-0381 to Magniber deployments and to malvertising-enabled intrusion chains, indicating capabilities in initial access, social engineering through spoofed software branding, and follow-on ransomware operations. No additional widely established aliases or sub-groups are directly supported beyond the Storm-0381 designation.
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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 malware family attributed to this actor across reporting.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Financially motivated threat actor cluster tracked by Microsoft.
Referenced only as another group associated with malvertising-driven malware deployment.
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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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Domains, IPs, and hashes tied to this actor, refreshed continuously.