slui.exe in System32 can change your Windows product key.
SlideToShutDown.exe in System32 can shutdown your PC on win 10 (Like a tablet I think)
ssText3d.scr is a Windows 10 screensaver in System32: https://www.dropbox.com/s/hy92z1hcpe6nvih/ssText3d.scr?dl=0
TRACERT.EXE in Sytem32 runs a Traceroute I'd assume. Seems it does.
Let me know if you find any cool things! 😃