Threat Outbreak Alert: Email Messages with Malicious Attachments on March 31, 2014

2014-03-3117:14:16

Cisco

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Alert ID:

33580

First Published:

2014 March 31 17:14 GMT

Version:

Summary

Cisco Security has detected significant activity related to spam email messages that contain an attachment for the recipient. The email message attempts to convince the recipient to open the attachment for details. However, the .zip attachment contains a malicious .exe file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID9420) may contain the following files:

> Certificacion Obligaciones Tributarias.zip
Certificacion Obligaciones Tributarias AEAT Contenidos Comunes La_Agencia Tributaria Modelos y formularios Declaraciones Modelo.exe

The Certificacion Obligaciones Tributarias AEAT Contenidos Comunes La_Agencia Tributaria Modelos y formularios Declaraciones Modelo.exe file in the Certificacion Obligaciones Tributarias.zip attachment has a file size of 688,809 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xF4C6F317531B59200FEDE4B2847D096C

The following text is a sample of the email message that is associated with this threat outbreak:

> Message Body:

**Bogota, Marzo 30 de 2014.
La Direccion de Impuestos y Aduanas Nacionales-DIAN, informa que de conformidad con la certificacion emitida por la Subdireccion de Gestion de Tecnologia de la Informacion y Telecomunicaciones, ha operado la contingencia de que trata el articulo 579-2 del Estatuto Tributario a partir de hoy 26 de agosto de 2013 y hasta el restablecimiento de los Servicios Informaticos Electronicos (SIE).
Por lo anterior, se promueve la descarga del indicador personalizado accediendo a la herramienta adjunta y suministrando su RUT y/o NIT.
Responsabilidad prevista en el artículo 43.1.f) de la Ley General Tributaria en caso de
pagos realizados a deudores concursados derivados de obligaciones contractuales.
Le agradecemos reenviar esta informacion a los contactos que usted considere pueden o no necesitar el consolidado personalizado emitido por nuestra organizacion desde sus bases de datos.
Agradecimientos.
Juan Ricardo Ortega Lopez
Director General
Direccion de Impuestos y Aduanas Nacionales
2014
sir
please send us a copy of proforma invoice or a quotation containing
the products listed in below
so we can move further,
Dear Sir/Madam,
The attached payment advice is issued at the request of our customer. The payment was made to your company account. Please check the attachment.
Yours faithfully,
Global Payments and Cash Management
Standard Chartered Bank?

This is an auto-generated email, please DO NOT REPLY. Any replies to this
email will be disregarded.

Security tips
1. Install virus detection software and personal firewall on your
computer. This software needs to be updated regularly to ensure you have
the latest protection.
2. To prevent viruses or other unwanted problems, do not open attachments
from unknown or non-trustworthy sources.
3. If you discover any unusual activity, please contact the remitter of
this payment as soon as possible.

> *******************************************************************
> This e-mail is confidential. It may also be legally privileged.
> If you are not the addressee you may not copy, forward, disclose
> or use any part of it. If you have received this message in error,
> please delete it and all copies from your system and notify the
> sender immediately by return e-mail.
>
> Internet communications cannot be guaranteed to be timely,
> secure, error or virus-free. The sender does not accept liability
> for any errors or omissions.
> *******************************************************************
> “SAVE PAPER - THINK BEFORE YOU PRINT!”
> ***************************************************************************
Good day,
Find attached original documents for payment.
Best regards.
Best Regards,
Accounts Manager
Tel: +371-21-6116 4904
Fax: 371-21-6111 4212**

Cisco Security analysts examine real-world email traffic data that is collected from over 100,000 contributing organizations worldwide. This data helps provide a range of information about and analysis of global email security threats and trends. Cisco will continue to monitor this threat and automatically adapt systems to protect customers. This report will be updated if there are significant changes or if the risk to end users increases.

Cisco security appliances protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. Email that is managed by Cisco and end users who are protected by Cisco Web Security Appliances will not be impacted by these attacks. Cisco security appliances are automatically updated to prevent both spam email and hostile web URLs from being passed to the end user.

Revision History

* Version	Description	Section	Date
1	Initial Release		2014-March-31 17:14 GMT
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