Yesterday, I finally found my flash drive which is lost for almost a month. Inserted it to the computer to see if it's still working. Then suddenly the resident shield told me they found some threats(lgtp.pif and autorun.inf). I deleted them and the resident shield told me it's successfully removed. Then I safely eject the flash drive and inserted it back to the cpu. But the resident shield found the threats again which means they were not removed.
I also check the contents of my flashdrive and found this strange found.000 folder. I also found out that the folder found.000 has made its way to my local disk. In my local disk I also found a *$RECYCLE.BIN folder. The hidden folders in my local disk are not hidden anymore. Since I'm in a Details view, I can see the size of the files and I saw that all the folders became 272 kb. My local disk and flashdrive is now really crazy. Whenever I try to open a 'folder' in my flashdrive, the active window will close and open again already showing the contents of the 'folder'.
The flashdrive didn't have any malicious files since I lost it. I found my flashdrive inside a plastic bag and I was the one who originally placed the flashdrive there. I thought I lost it, but no, I just forgot where I placed it. How can these strange files go in my flashdrive? How do I make my local disk and flashdrive sane again? Please help me