Security Incidents mailing list archives

Re: nimda tries to send mail after reboot


From: "Michael H. Warfield" <mhw () wittsend com>
Date: Wed, 19 Sep 2001 17:22:00 -0400

On Wed, Sep 19, 2001 at 11:13:30AM -0600, Brett Glass wrote:
Messages bearing the worm are starting to trickle in, slowly. It
may be that the worm is designed to start e-mailing only after the
infection is a certain number of hours old.

Sadly, the copies of the worm we're receiving are coming from
companies whose employees we'd expect to know better than to
leave machines unprotected -- such as V-One and SCO.

        Make sure you know who you are throwing stones at.  The worm
is spoofing the From addresses.  I just got done researching a pile
of them because people reported one of our majordomo servers was sending
out the worm.  Considering that it was a Linux box, that would have been
a good trick.  Header analysis indicated one particular IP address we
had never heard of was sending out all the copies of the worm with
our majordomo server as the From address.  I got five copies of the
worm from five different sources and all of them tracked back to
one IP address and none of them had any headers indicating that the
message had been anywhere near our site.  Sigh...  Maybe it was
someone who had recently subscribed to one of our mailing lists or
something, but I can't find where we've ever even been in contact with
any address within that /16...

I agree that it will be a very long week. None of our machines
is susceptible to the worm, but our backbone feed is getting
hammered. I wish we had a firewall under our control at our
upstream provider.

--Brett Glass

At 11:08 AM 9/19/2001, jforster () rapidnet com wrote:

I got a few copies of this worm (via e-mail) this afternoon.
Sadly, someone else in the office did as well (or hit an infected site).
It's going to be a long week....

        I know of several people who have been burned by browsing a
contaminated web site.  Then the damn thing drops it's turds all
over every directory and on all the network shares it can reach and
on and on...

        Mike
-- 
 Michael H. Warfield    |  (770) 985-6132   |  mhw () WittsEnd com
  (The Mad Wizard)      |  (678) 463-0932   |  http://www.wittsend.com/mhw/
  NIC whois:  MHW9      |  An optimist believes we live in the best of all
 PGP Key: 0xDF1DD471    |  possible worlds.  A pessimist is sure of it!


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