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Virus Advisory: McAfee AVERT Raises Risk Assessment to Medium on New W32/Netsky.j@MM Worm

  • 09 March, 2004 10:47

<p>For further information or comment, please contact Allan Bell directly on the details below:</p>
<p>Allan Bell - Marketing Director,
Network Associates
0412 411 929 or
02 9761 4229.</p>
<p>McAfee AVERT Receives Over 70 Samples an Hour of W32/Netsky.j from Customers Around the World</p>
<p>SYDNEY, March 9 - Network Associates, the leading provider of intrusion prevention solutions, today announced that McAfee AVERT (Anti-Virus and Vulnerability Emergency Response Team), the world-class anti-virus and vulnerability research division of Network Associates, raised the risk assessment to medium on the recently discovered W32/Netsky.j@MM, also known as Netsky.j. Netsky.j is a prolific worm that spreads via email, sending itself to addresses found on the victim's machine. The worm has many of the same functionalities as its Netsky predecessors. McAfee AVERT researchers first saw the worm earlier today and to date, have received approximately 200 samples of Netsky.j from both real customer submissions and virus-generated mail from customers around the world.</p>
<p>Most of the Netsky.j samples that McAfee AVERT has seen are from the virus itself, which is spoofing the addresses, and not from the infected customers. This is the case with most viruses at this point, the three most prevalent families being Mydoom, Bagle and Netsky.</p>
<p>Symptoms</p>
<p>Netsky.j is an Internet worm that once activated emails itself to addresses found on the victim's machine. The worm then attempts to copy itself to folders on drives C: and attempts to deactivate the W32/Mydoom.a@MM and W32/Mydoom.b@MM viruses. Users should immediately delete any email containing the following:</p>
<p>From: (forged address taken from infected system)</p>
<p>Subject: Taken from the following list:</p>
<p>-- Re: Hello</p>
<p>-- Re: Hi</p>
<p>-- Re: Thanks!</p>
<p>-- Re: Document</p>
<p>-- Re: Message</p>
<p>-- Re: Here</p>
<p>-- Re: Details</p>
<p>-- Re: Your details</p>
<p>-- Re: Approved</p>
<p>-- Re: Your document</p>
<p>-- Re: Your text</p>
<p>-- Re: Excel file</p>
<p>-- Re: Word file</p>
<p>-- Re: My details</p>
<p>-- Re: Your music</p>
<p>-- Re: Your bill</p>
<p>-- Re: Your letter</p>
<p>-- Re: Document</p>
<p>-- Re: Your website</p>
<p>-- Re: Your product</p>
<p>-- Re: Your document</p>
<p>-- Re: Your software</p>
<p>-- Re: Your archive</p>
<p>-- Re: Your picture</p>
<p>-- Re: Here is the document</p>
<p>Body: Taken from the following list:</p>
<p>-- Here is the file.</p>
<p>-- Your file is attached.</p>
<p>-- Your document is attached.</p>
<p>-- Please read the attached file.</p>
<p>-- Please have a look at the attached file.</p>
<p>-- See the attached file for details.</p>
<p>Pathology</p>
<p>After being executed, Netsky.j emails itself out as a .PIF attachment with a filename taken from strings within the worm. The worm then copies itself in the WINDOWS directory with the filename 'WINLOGON.EXE'. The worm then adds a key to the registry, which helps it activate at the system start-up.</p>
<p>Cure</p>
<p>Immediate information and the cure for this virus can be found online at the Network Associates McAfee AVERT site located at http://vil.nai.com/vil/content/v_101083.htm . Users of McAfee Security products should update their systems from that page with the 4335 or later scanning engine to stop potential damage.</p>
<p>Network Associates McAfee Protection-in-Depth Strategy delivers the industry's only complete set of system and network protection solutions differentiated by intrusion prevention technology that can detect and block these types of attacks. This allows customers to protect themselves while they plan their patch deployment strategy.</p>
<p>McAfee AVERT Labs is one of the top-ranked anti-virus and vulnerability research organizations in the world, employing more than 100 researchers in offices on five continents. McAfee AVERT protects its customers by providing cures that are developed through the combined efforts of McAfee AVERT researchers and McAfee AVERT AutoImmune technology, which applies advanced heuristics, generic detection, and ActiveDAT technology to generate cures for previously undiscovered viruses.</p>
<p>About Network Associates</p>
<p>With headquarters in Santa Clara, California, Network Associates, Inc. creates best-of-breed computer security solutions that prevent intrusions on networks and protect computer systems from the next generation of blended attacks and threats. Offering two families of products, McAfee System Protection Solutions, securing desktops and servers, and McAfee Network Protection Solutions, ensuring the protection and performance of the corporate network, Network Associates offers computer security to large enterprises, governments, small and medium sized businesses, and consumers. For more information, Network Associates can be reached on the Internet at http://www.networkassociates.com/ .</p>
<p>NOTE: Network Associates, McAfee and AVERT are either registered trademarks or trademarks of Network Associates, Inc. and/or its affiliates in the United States and/or other countries. All other registered and unregistered trademarks herein are the sole property of their respective owners.</p>
<p>##ENDS##</p>

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