Ransom is a sort of malware that blocks or restricts the users from accessing their devices.
After that user may end up paying the amount demanded by the ransomware program via online payment methods.
CryptXXX was first found byProofpoint researchersin April.

The researchers found that this ransomware is closely associated to the Reveton ransomware operation and Angler/Bedep.
The ransomware programs unusually encrypt files and then demand a ransom which the user has to pay via Bitcoin.
However, the demands vary depending upon various ransomwares.

Very often culprits change malware code in such a way that it becomes impossible to decrypt infected files.
