W32.HLLW.Gaobot.DJ

W32.HLLW.Gaobot.DJ is a worm that infects computers through various exploits, and then opens a backdoor to a predetermined IRC channel.

This worm propagates using multiple vulnerabilities, including:

• Weak passwords on network shares
• The DCOM RPC vulnerability (described in Microsoft Security Bulletin MS03-026), using TCP ports 135 and 445.
• The WebDav vulnerability (described in Microsoft Security Bulletin MS03-007), using TCP port 80.

W32.HLLW.Gaobot.DJ is packed with UPX.

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Note: Virus definitions dated prior to November 27, 2003 may detect this threat as W32.HLLW.Gaobot.gen.

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Protection

• Initial Rapid Release version November 24, 2003
• Latest Rapid Release version July 19, 2008 revision 019
• Initial Daily Certified version November 24, 2003
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date November 26, 2003

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: More than 10
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Easy

Damage

• Damage Level: Medium

Distribution

• Distribution Level: Low