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


Risk Level 2: Low

March 23, 2004
February 13, 2007 12:20:06 PM
Also Known As:
W32.HLLW.Polybot.B, W32/Gaobot.worm.gen.d [McAfee], Phatbot
Systems Affected:

W32.Gaobot.SA is a worm that attempts to spread through network shares that have weak passwords and allows attackers to access an infected computer using a predetermined IRC channel.

The worm uses multiple vulnerabilities to spread, including:

  • Virus definitions dated March 23, 2004 may detect this as W32.HLLW.Polybot.B.
  • The worm has an MD5 hash value of 0xD8B1550B56992C19C34063653E50FD09.

Antivirus Protection Dates

  • Initial Rapid Release version March 23, 2004
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version March 23, 2004
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date March 24, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Fergal Ladley

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