W32.Hezhi

Risk Level 1: Very Low

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Discovered:: April 22, 2002
Updated:: February 13, 2007 11:44:58 AM
Also Known As:: Win32.Hezhi [Kaspersky], W32/Hezhi.a [McAfee]
Type:: Virus
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Hezhi is a polymorphic virus that infects Portable Executable (PE) files. It replicates to network shares and mapped network drives.

What are Portable Executable (PE) files?
Portable Executable (PE) files are files that are portable across all the Microsoft 32-bit operating systems. The same PE-format executable can be executed on any version of Windows 95, 98, Me, NT, 2000, and XP. All the PE files are executable, but not all the executable files are portable.

A common example of a PE file is a screen saver (.scr) file.

Antivirus Protection Dates

Initial Rapid Release version April 22, 2002
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version April 22, 2002
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date April 22, 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: Low

Writeup By: Frederic Perriot

Technical Details

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Internet Security Threat Report, Volume 16