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Stormous is a cybercriminal and politically aligned threat group active since 2021 that presents itself as Arabic-speaking. It has been associated with website defacement, information theft, ransomware-related extortion, and a dedicated data-leak operation. The group has publicly supported the Russian government during the Russia-Ukraine war and declared an intent to target Ukrainian government institutions, including the Ministry of Foreign Affairs. Stormous has used PHP-based malware against PHP web servers and vulnerable web applications. Its tooling has been assessed as capable of establishing remote access, deploying additional payloads, encrypting files, and delivering ransom notes. The group has posted organizations from multiple regions to its leak site, including manufacturing and consumer-facing businesses. However, evidence that every organization listed by Stormous was directly compromised by the group, or that encryption was used in every claimed incident, is not established. Reporting has also identified overlap and possible cooperation with other extortion groups, including RansomHouse, Karakurt, and Snatch; these relationships are not definitively proven.
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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.
25 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
2 malware families attributed to this actor across reporting.
14 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.
Stormous was listed among other ransomware groups observed in Japan during the first half of 2026.
Group blending hacktivist framing with financially motivated extortion, increasingly claiming industrial and manufacturing victims through data theft-focused operations.
Mentioned only in related content as a separate cybercrime gang previously claiming a Coca-Cola breach.
Related Posts ... Stormous ATTACKS Swedish University
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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.