-----Original Message-----
Edited from: WOODY's OFFICE WATCH: 20 August 2003 Vol 8 No 32
HOW SOBIG WORKS
SoBig is a program that runs on an infected computer. A computer can be
infected via an email attachment.
Once SoBig is running, it scans your hard drive for email addresses. This
can be anyones email address, not just yours. It doesn't just look in your
address book but also any web pages that are stored on your hard drive.
A goldmine of addresses is usually gathered from the browsers folder of
recently viewed pages pages - in Internet Explorer that's the Temporary
Internet Files folder/s.
The important point is that email addresses are stolen from all sorts of
places on a computer.
Once SoBig has those addresses it starts sending out infected email
messages.
Those infected messages are marked as coming
FROM: one of the stolen email addresses
TO: another of the stolen email addresses
Vital Point: The message will almost invariably NOT really come from the
email address shown.
Don't blame the apparent FROM email address in an infected message - not
only is the person probably not infected, they are totally unaware that a
message has been sent in their name.
There's no practical way to trace the source of the infected messages, at
least not for those of us who don't do anti-virus tracking for a living. In
the current attack the messages may well be coming from multiple sources.
SoBig uses it's own SMTP server to send out infected messages which means
you don't have to have a email program running and it is harder to trace the
source of infection.
The best thing you can do is delete the infected messages and make sure you
are not infected yourself.
The worm itself isn't new, but this is a new variant on a known baddie.
Nikki Peterson (MVP - Outlook)
Margot said:
I periodically get replies from people I've never sent
messages to...I use NAV auto-update and email protection,
and scan my system regularly to catch any viruses...
This is getting spooky--it's happening to more than one
account [and I got a really nasty anti-spam flaming email
from someone I'd never heard from--cursing, threats-- the
whole 9 yards...] I've also gotten replies telling me I
have a virus...then I scan and nothing comes up.
Any ideas? Thanks, in advance...
.