How to remove Serpent ransomware and decrypt .serpent and .dng files

Serpent is a new file-encrypting virus primarily focused on Danish users. This is evidenced by the fact that the malicious email used to infect computer contains message in Danish (“Sidste påmindelse for udestående faktura 1603750” which translates to “Last reminder for outstanding invoice 1603750”). After infiltration, Serpent ransomware corrupts your personal and sensitive files, like images, music, videos, text files and so on.