HackTool:Win32/Patch.A is a generic detection for a series of hacking tools intended to "patch" programs that may be evaluation copies, or unregistered versions with limited features.
When run, this tool may create the file "<system folder>\bassmod.dll", which is non-malicious. Win32/Patch may display several different user interface dialogs, as can be seen in the examples shown below:
It is recommended that you do not run applications detected as HackTool:Win32/Patch.A, as they may be associated with other malicious, or unwanted applications.
Analysis by Wei Li
HackTool:Win32/Patch.A is a user interactive program that does not automatically run at Windows start, or run as a hidden process.