Question How Can I Make Certain Files Appear as Non-System File?

[DevilsTrident]

I have some files on my computer that my friend sent me in a rar file, but when I try to extract them or try to open them, they just disappear, later I found out that the issue was the files appear as system files. So anyone know how can I make these files appear as non-system file?

 

[USAFRet]

One would have to know what these files are, and their extension, to maybe provide some way forward.