I think I had one of these on my wife's PC which probably started on another PC, my labelling PC for my business which hardly gets used, by a guest inserting a Flash Drive which came out of their laptop.There are far worse worms than this one out there.
Got such a worm on my network last year - and none of the AV programs picked it up. Still undetectable by most AV scanners today.
Only way you'll know you're infected is, is that your firewall logs will show a lot of outgoing packets.
Symptoms on Windoze is that there's a blue screen during which you reset your pc, and nothing further happens, except that your PC is now a zombie, hunting for other PC's to infect.
The only way to combat this menace is to have firewalls enabled all round.
I had to format that infected PC in the end as I simply couldn't fix it, reset the Master Boot Record to be safe, installed my labelling program on the Administrator Account with a password, installed KIS2011 and set a password for that so as to prevent anything or anybody from exiting or uninstalling itself and only allow guests now to use the Guest Account. And how I found out it was the flash drive, well the person who infected the machine was here today and innocently inserted the flash drive and voilĂ KIS complained bitterly and cleaned it immediately. LOL.
Shall I tell this person their Laptop is also infected. Hmmm, no, probably will have to fix it then.
To think my own PC runs day and night 365 days a year, no viruses or issues since 1998. Obviously not the same PC, but the same user.