I don’t know much about this other than below text. Heck, the below web site may be malware-laden, I’m not sure, click at your own risk.
https://twitter.com/2spyware/status/894859391979196416
http://www.2-spyware.com/remove-hellsransomware-virus.html
“HellsRansomware virus, or alternatively called as UEFI ransomware, is another file-encrypting threat ready to lock sensitive users’ data. To IT security specialists’ amusement, the developers claim the virus to be “the only legit ransomware which will give you your files back unlike the others which do not.”
