srosa worm
Got hit by this on Wednesday and I'm still cleaning! It came through my AV and closed down that and Zone Alarm, rendered safe mode (XP SP3) unuseable and stopped me running any exe files to restore those.
It has a very bad press on Google. I have restored the safe mode reg keys, reinstalled ZA and AV and followed several 'guides' on removal, but I am still getting remnants of it popping up. Anyone got a guaranteed fix (without re-format!)? One useful tip would be how it has renedered exes u/s!