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Cloak is a financially motivated ransomware operation that emerged in late 2022 and has operated within the ransomware-as-a-service ecosystem. It has been associated with dedicated leak-site activity and ransomware incidents involving data theft and extortion. Cloak has targeted organizations across multiple industries, including healthcare, education, business services, and public-sector entities, with reported victims in the United States and Germany. Technical reporting has linked Cloak to infrastructure shared with the Good Day (ARCrypter) ransomware operation and identified use of code derived from the Babuk ransomware source code.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducting a ransomware attack and associated data breach against ra-vogeler.de in Germany.
Associated with healthcare-sector dedicated leak-site postings.
A RaaS group with links to Good Day/ARCrypter, targeting manufacturing, healthcare, education, government, and professional services globally, using Babuk-based code and double extortion.
Cloak is a ransomware group active since late 2022, responsible for over 130 attacks, including a data breach at Baltimore City Public Schools that exposed sensitive personal information.
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.