Malwarebytes works by monitoring the system's processes, stopping those which it identifies as malicious before they execute. The program has two scan modes, on is superficial and the other is a deeper, more thorough, scan that will take more time but in return will prove more trustworthy. Plus, it also comes with a memory protection module that avoids any potentially dangerous process from using the memory, as well as quarantine lists to examine suspicious elements.
Apart from all this, Malwarebytes also includes a few minor options, such as File-Assassin (to eliminate files blocked by Windows) that can prove helpful when trying to get rid of the malware once it is detected.
NotesThe program is free, although you can buy the Pro version which comes with a few more features as well as real-time protection.