A new ransomware virus called Retis (by some AVs) has appeared in France. Below is a ClamWin signature for it. If you want to use it, copy the signature, paste it to a Notepad or text file, name the file Sigfile.mdb, and save it to the C:\ProgramData\.clamwin\db folder. The signature will probably be good for a week or two, maybe a month. Viruses are updated just like virus signatures.

471040:b54eb91e7fa20a8e3d44335b7339ceea:Win.Trojan.Ransom.Retis-122117.1921

Regards,