Files hacked and encrypted with vscrypt extensions

I opened my folders today to find that some files (almost all .doc files) had been encrypted. They all now end with .vscrypt and are unreadable by ordinary means. I tried looking this up on the Norton/Symantec site and came up with info on a trojan called Ransomcrypt (low risk). I ran LiveUpdate and a full system scan but the only threat that came up was a tracking cookie, which was quarantined and deleted. The encryption has only happened on a smattering of files and I’m not convinced it is Ransoncrypt anyway as apparently this lodges in the desktop and changes it to a ransom note in Russian, which hasn’t happened (yet). However, I’ve tried searching for several variants on ‘vscrypt’ on the Norton/Symantec file, but with no search results. I don’t know if a) I’ve deleted the trojan or b) how to decrypt the files. Please can anyone help?