microsoft.com - what happens when there is no DNS record

Fri Aug 15 15:14:03 UTC 2003

Our assessment of worm's behavior is below:

If windowsupdate.com fails to resolve, it will return a -1, which is not
interpreted because this routine has no error checking.  The worm then
attempts to send its SYN packets to 255.255.255.255, which may have done
some interesting things, but it looks like the Windows raw socket
implementation won't let that packet out.  So basically, nothing
happens.  

There might be some issues with cached DNS, but besides that it looks
like the majority of the infections won't be doing much of anything
besides eating CPU cycles on the infected hosts.

Regards,
===============================
Daniel Ingevaldson
Engineering Manager, X-Force R&D
dsi at iss.net 
404-236-3160

Internet Security Systems, Inc.
The Power to Protect
http://www.iss.net 
===============================

-----Original Message-----
From: McBurnett, Jim [mailto:jmcburnett at msmgmt.com] 
Sent: Friday, August 15, 2003 10:26 AM
To: Patrick_McAllister at WASHGAS.COM; Robbie Foust
Cc: Bryan Heitman; nanog at merit.edu; owner-nanog at merit.edu; Chris Horry
Subject: RE: microsoft.com

good here thru AT&T and Broadwing..
Jim

-----Original Message-----
From: Patrick_McAllister at WASHGAS.COM
[mailto:Patrick_McAllister at WASHGAS.COM]
Sent: Friday, August 15, 2003 10:16 AM
To: Robbie Foust
Cc: Bryan Heitman; nanog at merit.edu; owner-nanog at merit.edu; Chris Horry
Subject: Re: microsoft.com

No problems here, UUNET out of DC....

                      Robbie Foust

                      <rfoust at duke.edu>        To:       Chris Horry
<zerbey at wibble.co.uk>                                         
                      Sent by:                 cc:       Bryan Heitman
<bryan at bryanheitman.com>, nanog at merit.edu                   
                      owner-nanog at merit        Subject:  Re:
microsoft.com                                                         
                      .edu

                      08/15/2003 10:04

                      AM

I've had no problem getting to Microsoft's site(s) today...I'm in the
southeastern US if it makes a difference.

- Robbie

Chris Horry wrote:

>
> Bryan Heitman wrote:
>
>> Several networks I have talked to are reporting they can't get to 
>> www.microsoft.com
>>
>> Has the virus began?  anyone?
>
>
> Yep, remember it's already August 16th in some parts of the world. 
> Unable to get to www.microsoft.com at 0958 EDT.
>
> Chris
>

--
Robbie Foust, IT Analyst
Systems and Core Services
Duke University