CryptXXX is a Windows ransomware infection that was discovered by Kafeine (Proofpoint) in April 2016. The infection will affect all versions of Windows, including Windows XP, Windows Vista, Windows 7, Windows 8, and Windows 10. When a victim is infected they will have their files encrypted and then a ransom of about 2.4 bitcoins, or approximately $1,000 USD, will be demanded in order to receive the decryption key. There is an active CryptXXX support topic that contains discussion and the experiences of IT consultants, end users, and companies who have been affected.
Source: https://www.bleepingcomputer.com/virus-removal/cryptxxx-ransomware-help-information