Threat description



WordMacro/Pesan.A is a simple Word Macro virus.

It activates every five minutes and displays one of these messages:

MicroSoft Warning!!!   You are about Formatting Hardisk, Are you sure?   FORMAT WARNING !!!   You have just activate the format.exe trigger,   all command will FORMAT your hardisk   SYSTEM DAMAGE WARNING !!!   System detected 'Bandung.d_t' VIRUS, all system will be   Damage Permanently !!! May God Have Mercy On you ....!!!  

Otherwise Pesan.A only spreads.


Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details


This is a later variant with destructive activation routine. The virus does not display any messages, but it attempts to delete the following files:

c:\dos\chkdsk.exe         c:\dos\         c:\dos\defrag.exe         c:\dos\scandisk.exe         c:\msdos\chkdsk.exe         c:\msdos\         c:\msdos\defrag.exe         c:\msdos\scandisk.exe  

After this Pesan.B creates a BAT file with the same name. When this batch file is executed, it will delete all files from drive C: with the deltree command.

The activation routine failes if there is no c:\dos or c:\msdos directory (most Windows 95 and NT systems do not have such directories).

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