Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a notification from CareerBuilder for the recipient. The text in the e-mail message attempts to persuade the recipient to open the attachment and view the 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 (RuleID5876) may contain the following files:
file in the CB_Offer_04232013_8817391.zip
attachment has a file size of 136,704 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x924310716FEE707DB1EA019C3B4ECA56
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: CareerBuilder Notification
I am a customer service employee at CareerBuilder. I found a vacant position that you may be interested in based on information from your resume or a recent online submission you made on our site.
You can review the position on the CareerBuilder by downloading the attached PDF file.
Attached file is scanned in PDF format.
Adobe(R)Reader(R) can be downloaded from the following URL: http://www.adobe.com
Best wishes in your job search !
Careerbuilder Customer Service Team
CareerBuilder ,5550-A Peachtree Parkway , Norcross, GA 30092
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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