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Beast Ransomware is a financially motivated ransomware-as-a-service operation publicly active since 2024 and assessed as a successor or enhanced iteration of the Monster ransomware lineage. The operation supports Windows, Linux, and VMware ESXi environments and uses a dedicated leak site to conduct double-extortion attacks, combining data theft with encryption and threats of public disclosure. Beast has claimed victims in healthcare, manufacturing, pharmaceutical, battery-component, and materials-related organizations, including targets in the United States, South Korea, and China. Beast operators use widely available and dual-use tooling for network reconnaissance and scanning, credential theft, lateral movement, persistent remote access, data exfiltration, and ransomware deployment. Observed tradecraft includes credential dumping and password recovery tools, remote administration software, remote service execution, and cloud-storage clients for staging or exfiltrating stolen data. The group also targets recovery capabilities by deleting volume shadow copies, disabling backup services, and stopping security- and backup-related processes. Its toolset includes cleanup functionality intended to remove logs and operational artifacts. Beast’s reliance on common tooling can complicate attribution, but identified Beast ransomware binaries and its dedicated extortion infrastructure link these activities to the operation.
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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.
23 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.
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
1 indicator 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.
Listed only in the actor index/TTP section without substantive discussion.
Earlier ransomware branding in the Monster -> Beast -> GodDamn lineage; described as an enhanced version of Monster and the immediate predecessor to GodDamn.
Mentioned as a ransomware family using NirSoft tools; also noted as a predecessor iteration in the Hyadina lineage.
Ransomware group active against South Korean organizations during the quarter.
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.