Discovered: December 28, 1999
Updated: February 13, 2007 11:57:44 AM
Also Known As: W95.Spaces.1633, W95.Spaces.1245, W95.Spaces.1445, W95/Busm.1445, W95/Busm99.1445
Type: Virus
Systems Affected: Windows 95, Windows 98, Windows Me
W95.Spaces is a dangerous Windows 9x virus. On June 1 of every year, the virus manipulates the Master Boot Record (MBR) of an AT hard disk by using port commands. The virus modifies the MBR data area so that the first partition will point to itself. This prevents the system from booting, if running certain MS-DOS versions that contain a bug and are unable to boot the system correctly.
Protection
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Initial Rapid Release version December 29, 1999
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Latest Rapid Release version December 29, 1999
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Initial Daily Certified version December 29, 1999
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Latest Daily Certified version December 29, 1999
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Initial Weekly Certified release date December 29, 1999
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: 0 - 49
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Number of Sites: 0 - 2
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Geographical Distribution: Low
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Threat Containment: Easy
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Removal: Easy
Damage
Distribution
Writeup By: Peter Szor
