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W32.Gaobot.gen!poly

Risk Level 2: Low

Discovered:
March 19, 2004
Updated:
February 13, 2007 12:19:38 PM
Also Known As:
W32.HLLW.Polybot, Phatbot, W32/Polybot.l!irc [McAfee], WORM_AGOBOT.HM [Trend], Backdoor.Agobot.hm [Kaspersky]
Type:
Worm
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Gaobot.gen!poly is a worm that attempts to spread through network shares with weak passwords. It also allows attackers to access an infected computer using a predetermined IRC channel.

The worm uses multiple vulnerabilities to spread, including:

Notes:
  • Virus Definitions released before March 24, 2004 detect this threat as W32.HLLW.Polybot.
  • Virus Definitions released after February 27, 2004 and before March 19, 2004 detect this threat as W32.HLLW.Gaobot.gen.




Antivirus Protection Dates

  • Initial Rapid Release version March 19, 2004
  • Latest Rapid Release version April 25, 2011 revision 024
  • Initial Daily Certified version March 19, 2004
  • Latest Daily Certified version April 25, 2011 revision 037
  • 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: 50 - 999
  • Number of Sites: More than 10
  • Geographical Distribution: Low
  • Threat Containment: Moderate
  • Removal: Moderate

Damage

  • Damage Level: Medium

Distribution

  • Distribution Level: Medium
Writeup By: Asuka Yamamoto

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