Threat Outbreak Alert: Fake Missing Payment Request Email Messages on December 9, 2013

2013-12-09T15:51:20
ID CISCO-THREAT-32087
Type ciscothreats
Reporter Cisco
Modified 2013-12-09T15:51:20

Description

Medium

Alert ID:

32087

First Published:

2013 December 9 15:51 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to Portuguese-language spam email messages that claim to contain a missing payment notification for the recipient. The text in the email message attempts to convince the recipient to open the attachment and view the details. However, the .zip attachment contains a malicious .cpl file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID8164) may contain the following files:

> nota_fical.zip
nota_fical.cpl

The nota_fical.cpl file in the nota_fical.zip attachment has a file size of 1,321,472 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x5D8152495A3AE4CA26BD7D13EDB7B02F

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

> Subject: Nota fical online debito pendente 02242544

Message Body:

Prezado cliente, Sua Nota Fiscal Online.
Tentamos Contato por telefone mais não tivemos êxito, Consta ainda a Pendencia em aberto da NFe 39200129 em seu CPF/CPNJ, sua NFe segue em anexo, favor quitar o mais
breve possivel seu saldo devedor.
NFe39200129/2013
Em caso de duvidas, estamos a sua disposição.
Ultima tentativa de contato, a nao quitação do debito pendente, será aberto o procedimento para inserir seu CPF/CNPJ junto ao SPC e Serasa.

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 | | 2013-December-09 15:51 GMT
    Show Less

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