Cisco Security Intelligence Operations has detected significant activity related to Portuguese-language spam e-mail messages that claim to contain notification of a criminal complaint generated by the recipient. The text in the e-mail message attempts to convince the recipient to open a link to view additional details. However, the link contains a .zip file that contains a malicious .exe file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4100) may contain the following files:
Boletim_sp_F3C95.zip
Boletim_sp_F3C95.exe
The Boletim_sp_F3C95.exe file in the Boletim_sp_F3C95.zip attachment has a file size of 171,008 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xD885B9D093D57B2F411FFBA86ACA1592
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Message Body:
So Paulo, 18 de abril de 2012
Atendendo a uma reclamante foi gerado uma queixa crime em seu cpf/email, estamos entrando em contato
para a apresentao da mesma. Para maiores esclarecimentos do Boletim de Ocorrncia de NF3C958074EEA2/2012, na qual a sua pessoa tera que efetuar comparecimento na data e local especificado.
Confira o boletim
Polcia Civil do Estado de So Paulo - R. Libero Badar 39 - So Paulo/SP - CEP 01009-000
Cisco Security Intelligence Operations analysts examine real-world e-mail 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 e-mail security threats and trends. Cisco will continue to monitor this threat and automatically adapt IronPort systems to protect customers. This report will be updated if there are significant changes or if the risk to end users increases.
Cisco IronPort Virus Outbreak Filters protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. E-mail that is managed by Cisco and end users who are protected by Cisco IronPort web security appliances will not be impacted by these attacks. Cisco IronPort appliances are automatically updated to prevent both spam e-mail and hostile web URLs from being passed to the end user.
Related Links
Cisco Security Intelligence Operations
Cisco Threat Operations Center
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