system
6
these are the files:
http://i.imgur.com/cnZav0r.png
these are the source i think, i got them from my USB flashdisk which came from another computer. But a computer with avast can clean my USB flashdisk
http://i.imgur.com/mhgFRig.png
contents of the autorun
http://i.imgur.com/pNvszZe.png
if i try to delete these files, they just come back with a different filename.