Mamba is an example of HDD-encoding ransomware. They usually enter the device with the assistance of a Trojan horse virus. The Trojan is the one who ensures the access, and once both viruses have finally gotten inside your system, they proceed with their further plans and intentions. It may start the actual encryption process after carefully defining which files exactly are used most frequently. Then all of them get locked up. The Trojan, on the other hand, stays hidden until the moment comes for the implementation of its own plan.