I could fix the usb-disks infected with the virus which replaces your folders with a file folderName.exe, by following these steps (on Windows) –
- Run the command attrib e:\*.* /d /s -h -r -s in the command prompt – this will display all the hidden files and folders.
- Delete the dll file that appears in the disk after the above command is run, and also the folders converted to .exe.
The disk should now be usable again.