Classification

Category :

Malware

Type :

-

Aliases :

Pesan

Summary

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.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

Variant:Pesan.B

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\format.com
 c:\dos\defrag.exe
 c:\dos\scandisk.exe
 c:\msdos\chkdsk.exe
 c:\msdos\format.com
 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).