Security experts created online service where victims whose systems have been encrypted by the CryptoLocker ransomware can get the decryption keys for free. FBI estimates from June, more than 500,000 people fell victim to the malware between September 2013 and May 2014. The infrastructure of Cryptolocker and other malware was taken down in June under a campaign known as Operation Tovar but there are still many cases where this strain of ransomware is infecting users, according to security experts. You can take an email address and one of the encrypted files to the free decryptolocker.exe command line tool and decrypt your files.
Source: https://thehackernews.com/2014/08/CryptoLocker-Decryption-Keys-Tool.html