Ryuk has been a high profile ransomware due to its wide impact on the networks it infects, high ransom demands, and reports of having earned close to 3.7 million dollars. New research now indicates that the Ryuk actors may be renting other malware as an Access-as-a-Service to gain entrance to a network. Researchers say TrickBot operators are renting their service to a limited number of cyber criminals who use it to gain access to networks where TrickBot is installed. TrickBot administrator group is suspected to be based in Eastern Europe.
Source: https://www.bleepingcomputer.com/news/security/ryuk-ransomware-partners-with-trickbot-to-gain-access-to-infected-networks/