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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Chack.A

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Chack.A
Technical name:W97M/Chack.A
Threat level:Low
Type:Virus
Effects:  It infects Word 97 documents and the global template, disables the macro antivirus protection and preventing users from working with macros. It displays messages on screen and disables the About Microsoft Word option in the Help menu.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

Detection updated on:Nov. 13, 2002
StatisticsNo
Family:VALENTIN

Brief Description 

    

Chack.A is a macro virus that affects Word 97 documents, as well as the global template used by this application.

Chack.A uses the usual means of infection used by macro viruses. Firstly, it infects the global template. Then, it infects all the documents opened, closed or saved in the affected computer.

In addition, Chack.A disables certain Word options and, on Fridays it displays a message on screen when the user of the affected computer closes the Word program.

Visible Symptoms 

    

Chack.A is very easy to identify, as every Friday, if the user of the affected computer uses Word, the virus displays a message when the program is closed. This message consists of an image and a checkbox with two buttons.