ESET security firm has included master decryption keys into a tool that allows rescuing the encrypted files without paying the ransom. The keys have already been used by Kaspersky Labs to update their RakhniDecryptor program so that it can be used to decrypt victims files. The CrySis ransomware was first spotted in February by ESET, it has infected systems mostly in Russia, Japan, South and North Korea, and Brazil. The malware spreads via email attachments with double file extensions or via malicious links embedded in spam emails.”]
Source: http://securityaffairs.co/wordpress/53677/malware/crysis-ransomware-decryptor.html