VBS.Grez

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Discovered:: March 23, 2004
Updated:: February 13, 2007 12:20:08 PM
Also Known As:: VBS/Grez.worm [McAfee], VBS.Grez [Kaspersky]
Type:: Worm
Systems Affected:: Windows 2000, Windows NT, Windows Server 2003, Windows XP

VBS.Grez spreads by scanning for computers that are vulnerable to Microsoft's DCOM RPC security exploit. This worm has a VBScript and a Windows-executable component.

Antivirus Protection Dates

Initial Rapid Release version March 24, 2004
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version March 24, 2004
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date March 24, 2004

Click for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Rodney Andres

Technical Details

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Internet Security Threat Report, Volume 16