Cisco Security has detected significant activity related to Portuguese-language spam email messages that claim to contain a bill payment request for the recipient. The text in the email message attempts to convince the recipient to open the link and view the details. However, the link contains a malicious .cpl file that, when executed, attempts to infect the system with malicious code.
Email messages that are related to this threat (RuleID6326) may contain the following files:
The 2via0440634-bol.cpl file in the 2via0440634-bol.pdf.zip attachment has a file size of 80,896 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x0E5A14A94E53625AE18E17828D48ED70
The following text is a sample of the email message that is associated with this threat outbreak:
Informo que a duplicata com vencimento em 28/05 no valor de R$ 287,55 não foi pago. Estou enviando em anexo 2ª via da duplicata atualizado para pagamento.
Conforme solicitado segue o anexo do BOLETO de cobrança.
Aguardamos o pagamento do boleto.
Caso ja tenha efetuado o pagamento, Favor desconsidere essa mensagem
Empresas Turi agradece a sua compreensão.
Marcos C Souza.
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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.
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