Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a payment balance notification for the recipient. The text in the e-mail message attempts to convince the recipient to follow a link and view the details. However, the link directs the user to a malicious .zip
file containing an .exe
file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID5650) may contain any of the following files:
file in the important_information_2013.zip
attachment has a file size of 442,880 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x3779B5596BE7D97F7273C8D2DCDD94B3
The following text section is a sample of the e-mail message that is associated with this threat outbreak:
Subject: contractIs it your file hxxp://www.keramikos.eu/important_information_2013.zip ?
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 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 web security appliances will not be impacted by these attacks. Cisco 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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