A customer that I am working with has been hit with this and it has encrypted their files. It does not have the sophistication of cryptolocker and the like. It seems to encrypt files and just has a text file stating to contact them at email@example.com. Send the text file, that looks to have a key at the bottom, and a small file for a test.
Of course they don't have a good backup. Anything they can do besides contacting them and paying?