Cryptolocker is one of the most important ransomware that targets most of the internet users from September 2013 to May 2014. Most of the users lost their money and data because of this ransomware because it provides either pay money or the data loss. Cryptolocker targets for money and it is gained multi millions in first two month period. According to the internet resources, Operation Tovar was performed on takeover of Cryptolocker Ransomware and it also mentioned that there are some users are still infected by the attack. On the successful completion on Operation Tovar, there are some resources that helped to decrypt the files which were still encrypted with the private keys by the attacker.
FireEye and Fox IT together worked on the decryption of Cryptolocker ransomware to help the users still facing on attack. They provide the webpage https://www.decryptcryptolocker.com in which it request to upload the encrypted Cryptolocker file and the email id of the user. It also provides the option for downloading a private key which helps in decryption. Decryptolocker.exe command line tool helps you to decrypt a file which is available for free.