How to remove Scarab-Walker ransomware and decrypt .JohnnieWalker files

Scarab-Walker is the latest version of ransomware viruses, marked as Scarab Ransomware. We already subscribed old versions: Horsia, Scarab-XTBL, Scarab-crypto, Scarab, Amnesia. Scarab-Walker shows all features of other versions: it encrypts all files on user's PC, adding .JohnnieWalker suffix to every coded file, and start to demand a ransom in BTC. All documents (.doc, .docx, .pdf, .txt, .xls and others), databases, mediafiles are at risk.