Threat description




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


Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

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  


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  


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

Submit a Sample

Suspect a file or URL was wrongly detected? Send it to our Labs for further analysis

Submit a Sample

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

More Info