Threat Description

Clonar

Details

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

Summary



X97M/Clonar is a simple Excel 97 macro virus.



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:Clonar.A

When an infected workbook is opened, X97M/Clonar.A disables both "Tools/Macros/Macro" and "Tools/Macros/Visual Basic Editor" menus.

Then the virus creates an temporary file, "C:\Windows\Diablos.bas", and it uses this file to infect all open workbooks.

Every 30th day of each month the virus activates its payload. At this time X97M/Clonar.A changes the size of toolbar buttons to large.





Technical Details: Sami Rautiainen, F-Secure


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