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Macro.Word97.Biok

Details
Macro.Word97.Biok.a

This macro virus contains eight macros in module “BiosKiller”: AutoExec, Document_Open, FileSaveAs, FileTemplates, HelpAbout, PayBiosKiller, ToolsMacro, ViewVBCode. The global macros area (NORMAL.DOT) gets infection when an infected document is opened (Document_Open). The virus spreads itself to other documents on their saving with new name (FileSaveAs). The virus copies its code from file to file by using Import/Exports VisualBasic calls via the C:\BK.SYS and C:\APVBK.SYS disk files.
The virus disables the Word VirusProtection. On entering the FileTemplates menu the virus displays the MessageBox:
Virus BiosKiller
Vous feriez mieux de vous acheter un AVall

On entering the ToolsMacro menu the virus displays the MessageBox:
Virus BiosKiller
Je suis un virus comme CIH…

On starting MS Word at 16 minutes of any hours or at 26 seconds of any minute the virus displays the MessageBox:
Virus BiosKiller
Vous connaissez le virus CIH ?
Je fais la même chose que lui…

On starting MS Word on 26th of any month the virus displays the MessageBox:
Virus BiosKiller
Votre Bios va subir des changements…
HAHAHAHAHA

It then creates the C:\CMOS.BAS, writes a CMOS-erasing instructions to there and executes it with a help of DOS QBASIC utility. The virus then calls the ExitWindows function.

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