Cisco Security has detected significant activity related to spam e-mail messages that claim to contain payment settlement notification for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment and view the invoice. However, the attachment 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 (RuleID5719) may contain the following file: DOC54845924755.exe
The DOC54845924755.exe file has a file size of 258,048 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x0B9802D72C277627B40850ABBA6E21F6
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Ref. 4 April 2013Please find enclosed your settlement report for the date indicated above. Please pay the amount due today.If you have any query, please contact your local Settlement Executive.Thank you for your co-operation.RegardsPlease do not reply to this unnatended e-mail address---------------Cher AgentRef. 4 April 2013Veuillez trouver ci-joint votre rapport de règlement pour la date indiquée ci-dessus. Veuillez nous remettre le montant du aujourdhui.Si vous avez besoin de renseignements supplémentaires, appelez votre Administrateur local.Merci de votre co-opération.Bien à vous--------------------------------------------Apreciable Agente,Ref. 4 April 2013Sírvase encontrar adjunto su reporte de cierre de la fecha arriba indicada.Favor de contactar a su representante de cuentas para cualquier pregunta adicional.Saludos© 2001-2013 Western Union Holdings, Inc.
Cisco Security 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 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. E-mail 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 e-mail and hostile web URLs from being passed to the end user.
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