Hold on... I think I know where this file came from, a while ago my older brother had some malfunctions in his Windows XP PC, the problem as I remember it was that C://WINDOWS/system32 doesn't exist, so he downloaded some fix file or something like that, and used my usb to burn this iso file on it, anyway next to this file there is a folder called I386 and it's filled with windows shit.
So I think this is a false alarm. However, I also have two files named WIN51 and WIN51IC, and both of them were modified on Monday,Nov 7 1988.