W32.HLLW.Cozit

Risk Level 1: Very Low

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Discovered:: October 17, 2002
Updated:: February 13, 2007 11:40:52 AM
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.HLLW.Cozit is a worm that spreads using the KaZaA peer-to-peer network. It is written in Borland C++ and packed by the UPX runtime packer. It copies itself to the Windows folder as Svchost.exe and changes the registry to run this file whenever you start Windows. When the worm is executed, it copies itself to the KaZaA download folder using a file name chosen at random from a list that the worm carries. On December 1, the worm will display a message in the title bar of the foreground window.

Antivirus Protection Dates

Initial Rapid Release version October 18, 2002
Latest Rapid Release version October 18, 2002
Initial Daily Certified version October 18, 2002
Latest Daily Certified version October 18, 2002
Initial Weekly Certified release date October 23, 2002

Click 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

Writeup By: Peter Ferrie

Technical Details

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Internet Security Threat Report, Volume 16