Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a Complaint Report from the Better Business Bureau. The text in the message body attempts to persuade the recipient to open an attachment to view further details. However, the .zip 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 (RuleID5169) may contain the following files:
file in the chicago_bbb_complaint_934587357662456.zip
attachment has a file size of 113.152 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x28EC8FE3A6C72555A0FC0068A71893F2
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: Case #85221951
The Better Business Bureau has received the above-referenced complaint from one of your customers regarding their dealings with you. The details of the consumer's concern are included on the reverse. Please review this matter and advise us of your position.
As a neutral third party, the Better Business Bureau can help to resolve the matter. Often complaints are a result of misunderstandings a company wants to know about and correct.
In the interest of time and good customer relations, please provide the BBB with written verification of your position in this matter by January 23, 2013. Your prompt response will allow BBB to be of service to you and your customer in reaching a mutually agreeable resolution. Please inform us if you have contacted your customer directly and already resolved this matter.
The Better Business Bureau develops and maintains Reliability Reports on companies across the United States and Canada . This information is available to the public and is frequently used by potential customers. Your cooperation in responding to this complaint becomes a permanent part of your file with the Better Business Bureau. Failure to promptly give attention to this matter may be reflected in the report we give to consumers about your company.
Please print attached form, fill it out and send it back to us.
We look forward to your prompt attention to this matter.
BBB of Chicago & Northern Illinois
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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