Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain contact information for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment. The .zip attachment contains a malicious .exe file that, when executed, may attempt to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4088) may contain any of the following files:
0419Contacts.zip
0419Contacts.exe
The 0419Contacts.exe file in the 0419Contacts.zip attachment has a file size of 61,440 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x37C7B4752644DF7A210C6F425E8F7944
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: last file received
Message Body:
Hello:
To accept what the last file received
thank you
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
Cisco SenderBase Security Network
