Russian national Oleg Koshkin pleads guilty to charges related to the operation of a malware crypter service used by the Kelihos botnet to obfuscate malware payloads and evade detection. He is facing a maximum penalty of 15 years in prison after September 20, 2021, when his sentencing is due. His co-defendant, Estonian national Pavel Tsurkan, also pled guilty today via videoconference to charges of aiding and abetting hackers to infect victim computers with malicious software.
Source: https://www.bleepingcomputer.com/news/security/us-convicts-russian-national-behind-kelihos-botnet-crypting-service/