Weird files in my Boot Execute


I was trying to clean my PC using CSU Free 4.0 (Portable) and found this strange file(fig.1) on Boot Execute session. I don’t have an idea what is this file in my system32! :o
Well, after I finished the clean, I restarted the PC to remove all junks left over. Then, when I went again on Boot Execute, I found other files(fig.2) with weird names, as the one before!

Can someone explain to me, what are these files and where come they from?! Are they safe?! I didn’t have installed any Chinese software last days. ;D


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