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.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
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 Created: Analysis: Katrin Tocheva and Sami Rautiainen, F-Secure