The recently discovered B0r0nt0K ransomware infects both Linux and Windows servers and demands $75,000 ransom to the victims. The ransom encrypts all files and renames them by appending the rontok extension to the file names. Experts pointed out that the malware author appears to be willing to negotiate the ransom amount. BleepingComputer analyzed the source code of the payment site and discovered the string Vietnamese Hacker in a comment, a circumstance that could suggest that the. malware author is Vietnamese.”]
Source: https://securityaffairs.co/wordpress/81627/malware/b0r0nt0k-ransomware.html