W32.Bolzano

Risk Level 1: Very Low

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Discovered:: August 11, 1999
Updated:: February 13, 2007 11:45:41 AM
Type:: Virus
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

W32.Bolzano is a new virus that replicates under Windows 95 and Windows NT infecting Portable Executable applications with EXE or SCR extensions. W32.Bolzano does not infect if the size of the host program is less than 16K. We have received 17 different variants of the virus so far as of Sept 16, 1999. Bolzano is currently the biggest W32 virus family.

Antivirus Protection Dates

Initial Rapid Release version August 31, 1999
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version August 31, 1999
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date August 31, 1999

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: Peter Szor

Technical Details

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Internet Security Threat Report, Volume 16