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Monster is a Delphi-based ransomware family and associated cybercriminal operation that emerged in March 2022. It is best known as the precursor to the Beast ransomware group, with subsequent reporting assessing a lineage from Monster to Beast and later to GodDamn. This activity is associated with financially motivated ransomware operations rather than any established nation-state alignment. Monster is primarily relevant as the foundational strain from which later ransomware variants and operations evolved. Beast has been described as an enhanced successor to Monster and later developed into a ransomware-as-a-service operation supporting double extortion through data theft and leak-site operations. Reporting on this lineage indicates continuity in operator tradecraft, tooling, and operational objectives across the Monster, Beast, and GodDamn names. Across the broader lineage, operators have targeted enterprise environments using common ransomware intrusion patterns: credential theft, lateral movement, persistence, backup destruction, log wiping, and file encryption for impact. Observed tooling and techniques associated with successor operations include remote access software, service-execution utilities, credential dumping tools, network discovery utilities, exfiltration tools, and scripts designed to delete shadow copies and impair backup recovery. Later variants in the lineage have also shown strong emphasis on defense evasion, including terminating or blinding antivirus and EDR products before encryption. Victim environments associated with successor operations have included Windows systems as well as Linux-based targets, including virtualization environments such as VMware ESXi. The group’s operational model has included data exfiltration prior to encryption, process termination to unlock files and disrupt defenses, and recovery prevention measures intended to maximize pressure on victims. Known aliases and successor branding tied to this lineage include Beast and GodDamn. Monster should therefore be understood not only as an early ransomware family but also as the origin point of a continuing ransomware cluster that evolved into more mature and operationally aggressive extortion activity.
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Original Delphi-based ransomware family in the lineage later rebranded/enhanced as Beast and then GodDamn.
Earlier ransomware gang/strain from which Beast emerged.
An earlier ransomware group referenced only as the predecessor to Beast.
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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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