Threat Description

Manalo

Details

Aliases: Manalo
Category: Malware
Type: Virus
Platform: X97M

Summary


X97M/Manalo is an Excel macro virus.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

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



Technical Details



Variant:Manalo.A

When an infected workbook is opened, X97M/Manalo.A checks if file "MANALO.XLS" exists in the Excel's startup directory. If the file does not exist, the virus creates a new workbook, infects it and saves it to there.

At October 3rd, 1999 and every day after that the virus activates its payload. At this time it shows a hidden sheet with some text and a flag.


Variant:Manalo.D

X97M/Manalo.D is a modified variant of X97M/Manalo.A. It creates a workbook, "C B I.XLS", to Excel's statup directory.

This variant activates its payload at September 27th, 1999 and every day after that when it attempts to show an hidden sheet.





Technical Details:Sami Rautiainen, F-Secure


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