How to remove Losers Ransomware and decrypt .losers and .damoclis files

Losers is a new ransomware infection related to notorious Nemesis and Cry36. Ransomware encrypts personal files with AES-256 encryption algorithm. During this, it renames affected files by adding .losers or .damoclis extension at the end, for example, myfamily.jpg is changed to myfamily.jpg.losers or myfamily.jpg.damoclis.