Threat Description

Friend

Details

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

Summary



X97M/Friend is a Excel 97 class infector.



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



Technical Details




Variant:Friend.A

When an infected workbook is opened, X97M/Friend.A disables Excel's built-in macro virus protection. Then it creates a workbook into Excel's startup directory, "sys.xls", and infects it. During infection the virus creates a temporary file, "C:\office.sys".

After that has been done and the Excel has been restarted, every workbook that is closed will be infected.


Variant:Friend.B

X97M/Friend.B is a slightly modified variant from X97M/Friend.A.





Technical Details: Sami Rautiainen, F-Secure


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