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W32.Gaobot.SA

Risk Level 2: Low

Discovered:
March 23, 2004
Updated:
February 13, 2007 12:20:06 PM
Also Known As:
W32.HLLW.Polybot.B, W32/Gaobot.worm.gen.d [McAfee], Phatbot
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows XP


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:

Notes:
  • 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.

Threat Assessment

Wild

  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 3 - 9
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Moderate

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: Medium
Writeup By: Fergal Ladley

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