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Arcus Media, also known as arcusmedia and arcus_media, is a ransomware-as-a-service operation active since at least May 2024. It has been associated with ransomware and data-breach claims against organizations in North America, Europe, Africa, Central America, and Southeast Asia, including technology, logistics, public-sector, consumer-services, tourism, and water-supply entities. Arcus Media has been characterized as focused on industrial and critical-infrastructure targets. Its activity includes ransomware operations accompanied by victim deadlines consistent with extortion demands. Arcus Media has also been reported to harvest credentials stored in web browsers.
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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.
1 indicator attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Claimed ransomware attack and data breach targeting Asada Sarapiquí, a Costa Rican water-supply organization.
Conducting a ransomware attack against ManagementPro.
Conducting a ransomware attack against Mark’Techno.
Conducting a ransomware attack resulting in a data breach against Perpustam in Malaysia.
Match sector + geo + tech-stack targeting against your real footprint.
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.