There is only one file type that uses the .KRC extension:
Mouse and Key Recorder Macro File
A KRC file contains a macro created by Mouse and Key Recorder, a program used to record and replay mouse actions and keystrokes. It stores a macro, which consists of mouse clicks and keystrokes recorded by a user to automate common tasks on a computer, such as moving files to another location or modifying an image in an image editor.
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Updated: May 8, 2020