Media releases are provided as is by companies and have not been edited or checked for accuracy. Any queries should be directed to the company itself.

Symantec Voice of Reason - 14 April 2009

Symantec Security Response has observed that the W32.Downadup worm continues to be active.
  • 14 April, 2009 11:46

<p>Good morning,</p>
<p>Symantec Security Response has observed that the W32.Downadup worm continues to be active. On April 8, 2009 we discovered a new variant that is a slightly modified version of the original W32.Downadup worm. In the previous statement, it was mentioned that the new variant of Downadup (.E) is an update to the older .A variant. Unfortunately, we need to issue a slight correction here. We have confirmed based on further testing that it is machines infected with the .C variant that are being targeted by the new .E variant via the peer-to-peer updating method. The primary objective is to update .C with the new features and drop Waledac binary onto the .C infected machines. W32.Waledac, one of the most active spam bots, steals sensitive information, turns computers into spam zombies, and establishes a back door remote access. Symantec products provide antivirus and IPS protection for Waledac.</p>
<p>It has also been reported, but not verified by Security Response, that a misleading application called Spyware Protect 2009 is also downloaded on some of Symantec’s honeypot systems. We have not seen this in our testing, but it does match what we have talked about previously. See Downadup Motivations.</p>
<p>This new variant reintroduces the MS08-067 exploit vector, which was removed in the .C variant. It includes previously unseen self-removal functionality to remove itself from the infected host on May 3, 2009. The new .E variant includes a slightly different list of URLs used to obtain the IP address of the infected host and also reaches out to a new list of high-profile domains to confirm the current date. When reaching out to these domains the threat is not exploiting any weakness nor downloading any code.</p>
<p>This new .E variant does not appear to include any new infection vectors that might allow the threat to spread faster or onto new machines. Symantec Security Response continues to analyze the file for other functionality. Symantec Security Response has released updated definitions to protect against this new threat and Symantec products with updated definitions will detect and remove the new sample from infected systems.</p>
<p>Symantec Security Response continues to remind users not to be alarmed, but to continue to exercise caution and implement security best practices into their daily routines. These best practices include keeping security patches current, keeping antivirus definitions up to date and being cautious when visiting suspicious Web sites or opening unexpected e-mails and e-mail attachments.</p>
<p>Angela Coombes</p>
<p>Press Contacts:</p>
<p>Angela Coombes</p>
<p>Max Australia</p>
<p>+61 2 9954 3492</p>
<p>Debbie Sassine</p>
<p>+61 2 8820 7158</p>

Most Popular

Brand Post

Most Popular Reviews

Join the newsletter!


Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Latest Articles


PCW Evaluation Team

Tom Pope

Dynabook Portégé X30L-G

Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.

Tom Sellers


This smart laptop was enjoyable to use and great to work on – creating content was super simple.

Lolita Wang


It really doesn’t get more “gaming laptop” than this.

Jack Jeffries


As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.

Taylor Carr


The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Featured Content

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?