W97M.Marker

Risk Level 1: Very Low

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Updated:: February 13, 2007 11:46:02 AM
Type:: Virus, Macro

W97M.Marker is a common macro virus with a unique payload. Similar to W97M.Class, it adds its viral code to the "ThisDocument" VBA5 module, which by default is always in Microsoft Word 97 documents and templates. It also uses a randomly-named temporary text file while infecting. The random name is HSFxxxx.sys where xxxx is a randomly-generated number.

Antivirus Protection Dates

Initial Rapid Release version December 21, 2000
Latest Rapid Release version December 21, 2000
Initial Daily Certified version December 21, 2000
Latest Daily Certified version December 21, 2000
Initial Weekly Certified release date pending

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: Jennifer Hirons

Technical Details

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Internet Security Threat Report, Volume 16