Looks like KeyHH.its is a file associated with having installed KeyHH from KeyWorks. This is definitely not a file that comes with the OS standard. Look for a way to uninstall KeyHH. If there is no way I'd look to see if it's running in the task manager. If it's running, stop its process and then delete KeyHH.exe and KeyHH.its from your hard drive.
If the files are locked by Windows then you may need something like Unlocker
to break it free so you can delete it.