Allright, I'm a little confused now, but lets see...
I opened a new txt file to check that ANSI was selected there, and it was. Was that what you meant?
Then I ran FRST again, here are the two logs. The file with the chinese characters is still there, should I delete it?
Then I decided to stick the flash drive in just in case, and surprise surprise, that stupid COOL.vbs was there, visible. Then MCShield worked and it was gone... but when I put it back in, COOL.vbs was still on it (or maybe it got on it again?). Here's the AllScans log as well.
Thanks for you patience, btw