Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a complaint report from Dun & Bradstreet for the recipient. 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 (RuleID5327) may contain the following files:
file in the Case_2361084.zip
attachment has a file size of 154,112 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xA6AA3A8B1E49224829CF2F534C187BC9
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: FW : Complaint - 2361084
Dun & BradStreet
New Complaint : 2361084
Dun & Bradstreet 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.
In the interest of time and good customer relations, please provide the DnB with written verification of your position in this matter by February 25, 2013. Your prompt response will allow DnB 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 Dun & Bradstreet 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.
We encourage you to print this complaint (attached file), answer the questions and respond to us.
We look forward to your prompt attention to this matter.
To ensure delivery of Dun & Bradstreet Credibility Corp. emails to your inbox and to enable images to load in future mailings, please add firstname.lastname@example.org to your email address book or safe senders list.
Privacy and Unsubscribe Notice:
2012 Dun & Bradstreet Credibility Corp.
Dun & Bradstreet Credibility Corp. 103 JFK Parkway, Short Hills, NJ 07078
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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