Threat Description

Leonor

Details

Aliases: Leonor
Category: Malware
Type: Virus
Platform: W97M

Summary


W97M/Leonor is a simple Word macro virus. It consists of one module "AutoOpen" and infects when open documents.



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


Depending on a random number, every Monday or Saturday W97M/Leonor virus creates 100 text files in the "C:\WINDOWS\ESCRITORIO" directory. These files contain the following string:

I love Leonor forever  

The names of the files range from "1.txt" to "100.txt".

The virus also contains the comment:

Leonor macro (v1.1) made by uhjov  

Variant:Leonor.B

This variant is similar to W97/Leonor.A. The files it creates when payload activates contains the following text:

Recuerdo de Leonor 	    Una noche de verano         -estaba abierto el balcn         y la puerta de mi casa-         la muerte en mi casa entr.         Se fue acercando a su lecho         -ni siquiera me mir-,         con unos dedos muy finos         algo muy tenue se rompi.         Silenciosa y sin mirarme,         la muerte otra vez pas         delante de m. Qu has hecho?         La muerte no respondi.         Mi nia qued tranquila,         dolido mi corazn.         Ay, lo que la muerte ha roto         era un hilo entre los dos! 		 		A. Machado 		 		

The comment in the virus code is also different:

Leonor macro (v1.2) made by Uhjov  

Variant:Leonor.C

W97M/Leonor.C is slightly modified variant from W97M/Leonor.A.





Technical Details:Katrin Tocheva and Sami Rautiainen, F-Secure


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