Hi Keny, you can try using several decrypters created by Kaspersky, the first one is called Rakhni Decryptor - download it here - http://support.kaspersky.com/viruses/disinfection/10556 The second one is called ShadeDecryptor - download it here - http://support.kaspersky.com/us/viruses/disinfection/13059#block1 Let me know if any of these tools were capable of decrypting your data.

PS. Just found another decrypter that could help you (created by Intel Security) - http://www.mcafee.com/us/downloads/free-tools/shadedecrypt.aspx