but the Blaster virus doesn't do that kind of
malicious tricks like resending passwords...
According to the experts its just a worm that
performs DoS attacks to the windows update site
besides propagating itself...

Not even the latest sobig f does that... The one i
remember that actually recovered personal info and
resent it to certain e-mail addreses is the
Badtrans virus, but badtrans doesn't use the "MS
Windows Hole" technique to propagate itself.