How to remove trojan from wordpress files.

Hello to everyone,

Yesterday I wanted to backup all of my wordpress files and I tried download to my hard disk but then my nod32 antivirus found like a thousand infected files!

I have benn hacked before but i thought that I was ok because I didn’t have any issues lately.

here you can see results of antivirus: http://justpaste.it/n0o

Please help me!