CheatTool.CETTrainer is a generic detection for a certain type of riskware.
HackTool.AutoKMS is a generic detection for hacktools that are intended to enable the illegal use of Microsoft products like Windows and Office.
Hack tools are a special kind of riskware. Riskware, in general, is a detection for items that are not strictly malicious, but pose some sort of risk for the user in another way.
HackTool.AutoKMS is sometimes backdoored and can often be found on sites of a shady nature.
Malwarebytes protects users from HackTool.AutoKMS by using real-time protection.
Malwarebytes can detect and remove HackTool.AutoKMS without further user interaction.