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.FilePatch is the detection for tools that help users to alter files. Often, these alterations are intended to gain free access to resources or use software for free that one would normally pay for. This behavior can have legal consequences in some countries and under some circumstances.
Malwarebytes can remove HackTool.FilePatch without further user interaction. Should users wish to keep it, they can add the detections to the exclusions list. Here’s how to do it.