W32.HLLW.Heycheck

W32.HLLW.Heycheck is a worm that attempts to spread using Microsoft Instant Messenger and peer-to-peer file sharing networks. This worm acts as a Web server on an infected computer, accepting connections on port 80 and sending a link to the worm in response to HTTP requests.

The existence of the file C:\Card.exe is an indication of possible infection.

Protection

• Initial Rapid Release version March 8, 2004
• Latest Rapid Release version July 19, 2008 revision 019
• Initial Daily Certified version March 8, 2004
• Latest Daily Certified version January 20, 2009 revision 048
• Initial Weekly Certified release date March 10, 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: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Easy

Damage

• Damage Level: Low

Distribution

• Distribution Level: Medium