Welchia, a variant of the MSBlast worm, is spreading across the Internet.  The worm infects a machine by using the same Windows exploit as MSBlast, and only affects Windows NT 4.0, XP and 2000.  This worm attempts to do some "good" for the infected machine, by downloading and installing the Microsoft RPC patch, removing MSBlast, and, ultimately, turning itself off in 2004.  However, the seemingly 'Good' worm is causing the same network congestion and PC instability as MSBlast.

Green Apple has disabled certain ports used by Welchia as recommended by Microsoft, which greatly lowers the possibility for the worm to enter or leave our network and affect our users.  However, every Windows user is urged to visit Microsoft's Windows Update and install the patch for this Windows flaw.  Windows Update is found at
    http://windowsupdate.microsoft.com

If you are infected, in addition to installing the patch you will need to remove the worm with the Symantec (Norton) removal tool. This tool may be downloaded here
    http://securityresponse.symantec.com/avcenter/venc/data/w32.welchia.worm.removal.tool.html

If you believe your computer is infected and could use help, please do not hesitate to give us a call.  As always, Green Apple users are welcome to bring in their machines for virus scans and virus removals.

Related Links

For more information on the Welchia worm, please see
  http://www.greenapple.com/support/security/reports.htm

For other information resources on Welchia, see
    CNET: http://news.com.com/2100-1002-5065117.html?tag=nl
    Symantec: http://securityresponse.symantec.com/avcenter/venc/data/w32.welchia.worm.html

For more information on viruses in general and prevention techniques, please see
    http://www.greenapple.com/support/library/virus-faq.htm
  

Home / Access / Development / Support / Hosting / Local Links / Computers
 Contact Us / Green Apple News / Jobs / Site Map / Link To Us / Policy

Lancaster-Fairfield County Chamber of Commerce, 2000 Small Business of the Year
www.greenapple.com · tel. (740) 653-9890 · toll free. (866) 653-9890
Copyright © 1995 - 2007, Green Apple, Inc.