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Risk Level 1: Very Low

October 29, 1998
February 13, 2007 11:34:33 AM
Also Known As:
MDEF 9806, MDEF 666, Graphics Accelerator, SevenDust
Systems Affected:

There are 6 variants of this virus, including 4 polymorphic, encrypted ones. The differences are described below. What they have in common is that they all infect applications by modifying MDEF and MENU resources, and they can create a System Extension (with an invisible character at the beginning of the name so it loads early) or add an INIT resource to the System file. The existence of the extension is the easiest way of identifying its presence without using NAV.

Antivirus Protection Dates

  • Initial Rapid Release version December 21, 2000
  • Latest Rapid Release version February 12, 2015 revision 005
  • Initial Daily Certified version December 21, 2000
  • Latest Daily Certified version February 12, 2015 revision 017
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Lee Gummerman

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