The virus is blocking my CDR files

Hello,

im Goran from Croati, 
the first time I write on forums, I'm sorry if I write something wrong.
Dropped a some virus that we blocked all the files (CDR, pdf, jpg, ....) the extension is added .80890fudx @ lycos.com they asked me to pay 2.3 Bitcoin that we unlocked. I was forced to pay because the backup was involved in the network and they attack me. and of course I had no backup off. Once you have sent me decoder unlock my files, which are now more not open in Corel X3 or X5, this is a nightmare.
Please if you have an idea how to solve the problem.
I warn all of your files to be transferred to some media that are inserted into the computer or network, because this is not normal.