Threat Outbreak Alert: Fake Invoices and Payments Certification Email Messages on January 22, 2014

Medium

Alert ID:

32525

First Published:

2014 January 22 19:49 GMT

Version:

1

Summary

• Cisco Security has detected significant activity related to Spanish-language spam email messages that claim to contain certification of payments and invoices for the recipient. The text in the email message attempts to persuade the recipient to open the attachment to view the details. However, the .rar 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 (RuleID8580) may contain the following files:

> Comprobante y Facturas.rar
Comprobante y Facturas 14284.exe

The Comprobante y Facturas 14284.exe file in the Comprobante y Facturas.rar attachment has a file size of 771,222 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x1BEAA39480AD8013D9B004570067E9D6

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

> Subject: Certificacion de Pagos y Facturas (responder urgente)

Message Body:

le adjunto pedidos pendientes y facturas por pagar
espero su respuesta
mil gracias
Marcela Santos Ferrer
jefa de tesoreria
mermundo.ltda
fax 057 2541384

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.

Related Links
Cisco Security
Cisco SenderBase Security Network

Revision History

* Version	Description	Section	Date
1	Initial Release		2014-January-22 19:49 GMT
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