Threat Description

Akuma

Details

Aliases: Akuma, Akuma.A
Category: Malware
Type: Virus
Platform: W97M

Summary


W97M/Akuma is a Word 97 class infector. It contains a destructive payload.

When an infected document is opened, W97M/Akuma.A disables Word's built-in macro virus protection.



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


When the document is closed, it infects the global template. During infection the virus creates a temporary file, "c:\cont.dbl", and deletes it afterwards.

At random times this virus changes the document summary information as follows:

  Title:    Akuma Macro Carrier     Subject:  Akuma     Keywords: Mary Bitch 	  

Between every 16th and 18th day of each month, the virus checks for existence of "c:\mary.log" file. If the file does not exist, it replaces every recently opened document (listed in the "File" menu) with the following text:

  Something wonderful has happened, your PC is alive and even better     but some of your documents are infected by the Akuma virus.     Mary is simply a bitch and you, (Username), are a stupid jerk and     lose some files.     Have a nice day. 	  

In the above text "(Username)" has been replaced with the current user name.

The original content of these files is lost.





Description Details: Analysis: Katrin Tocheva and Sami Rautiainen, F-Secure


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