Threat Outbreak Alert: Fake Western Union Receipt Attachment E-mail Messages on November 30, 2012
IntelliShield: Threat Outbreak Alert
2012 November 30 23:14 GMT
2012 November 30 23:14 GMT
Cisco Security Intelligence Operations has detected significant activity on November 30, 2012.
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain a Western Union receipt for the recipient. The text in the e-mail message attempts to persuade the recipient to open the attachment to view the receipt. However, the attachment contains a malicious .scr file that, when executed, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID4860) may contain the following file(s):
The file wu_receipt_jpeg.scr has a file size of 1,011,712 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xAC0630A33BDE5DAD66FF64FC63F27994
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Don't call me,i am at work.I sent the fee of $900 by Western Union today at about 17:00 my time which is 2am your time,Mtcn-----673 902 4473,sender Herb Stockman for no reason will you ask me for more money and i will be checking my bank account time to time make sure you also send me the customer transfer wire slip copy.Please call me when you pick up.
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
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.
LEGAL DISCLAIMER The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.