Cisco Security has detected significant activity related to Portuguese-language spam email messages that claim to contain a new security policy agreement 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 .zip
file containing a malicious .exe
file that, when executed, attempts to infect the system with malicious code.
Email messages that are related to this threat (RuleID6723) may contain the following files:
file in the dz.zip
archive has a file size of 613,743 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x716AD7B0CC18147A28D322CCE3962D1B
The following text is a sample of the email message that is associated with this threat outbreak:
De Acordo com as novas políticas de segurança da DOTZ você precisa fazer a adesão de segurança da DOTZ para evitar fraudes em sua conta.
Acesse um dos nossos servidores abaixo para fazer o download da ferramenta de atualização.
LINK01 LINK02 LINK03
#Caso uma algum desse link esteja off-line por favor clicar no proximo servidor !
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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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