1. Symantec/
  2. Security Response/
  3. W32.Gaobot.UM


Risk Level 2: Low

April 2, 2004
February 13, 2007 12:20:39 PM
Systems Affected:

W32.Gaobot.UM is a variant of W32.Gaobot.gen. It attempts to spread through network shares that have weak passwords. It also allows attackers to access an infected computer through a predetermined IRC channel.

The worm uses multiple vulnerabilities to spread, including:

W32.Gaobot.UM is packed with ASPack.

Antivirus Protection Dates

  • Initial Rapid Release version April 2, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version April 2, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date April 4, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Fergal Ladley

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2016 Internet Security Threat Report, Volume 21
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