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- 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:
- The DCOM RPC vulnerability (described in Microsoft Security Bulletin MS03-026) using TCP port 135.
- The RPC locator vulnerability (described in Microsoft Security Bulletin MS03-001) using TCP port 445.
- The WebDav vulnerability (described in Microsoft Security Bulletin MS03-007) using TCP port 80.
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
