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Threat actors associated with The Gentlemen ransomware‑as‑a‑service (RaaS) operation have been observed attempting to deploy a known proxy malware called SystemBC
A SystemBC proxy malware botnet of more than 1,570 hosts, believed to be corporate victims, has been discovered following an investigation into a Gentlemen ransomware attack carried out by a gang affiliate. [...]
Stealthy Group Taps Blockchain 'EtherHiding' to Facilitate Victim CommunicationsThe DeadLock ransomware group, a newly emerged digital extortion group, is using blockchain smart contracts to store proxy server addresses for facilitating ransomware negotiations with victim organizations. The technique suggests the group is made up of experienced cybercriminals.