worm"autorun.inf" creator not detected

the CIS are identifing the “Worm:sys32/autorun.inf” and blocking him, but something are creating him in interval of 15 seconds, what should i do in this case.
a good update for the CIS is identify who are creating the virus and block him too,after all cis is the best protection ever.

ps:i have formated the hd for solve this problem and for it i dont remenber all the name of the worm, but he have come with a “serial” program(if i dont have release this program of the defense+ nothing would have happened).

Maybe you must disable System Restore…