Threat Descriptions

Leonor

Classification

Category :

Malware

Type :

Virus

Platform :

W97M

Aliases :

Leonor

Summary

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

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

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.