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Threat Outbreak Alert

Threat Outbreak Alert: Fake Bank Documents Email Messages on August 23, 2013

 
Threat Type:IntelliShield: Threat Outbreak Alert
IntelliShield ID:30503
Version:1
First Published:2013 August 23 18:44 GMT
Last Published:2013 August 23 18:44 GMT
Port: Not available
Urgency:Possible use
Credibility:Confirmed
Severity:Mild Damage
 
 
Version Summary:Cisco Security has detected significant activity on August 23, 2013.
 

Description
 
Cisco Security has detected significant activity related to spam email messages that claim to contain important documents from Wells Fargo for the recipient. The text in the email message attempts to convince 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.

Email messages that are related to this threat (RuleID6898) may contain the following files:

WellsFargo.dwbexjmjdd.zip
WellsFargo_08232013.exe

The WellsFargo_08232013.exe file in the WellsFargo.dwbexjmjdd.zip attachment has a file size of 21,504 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x00949D04ACEAD6BC20E1BC1ACD09FEB3

The following text is a sample of the email message that is associated with this threat outbreak:

Subject: IMPORTANT Documents - WellsFargo

Message Body:

Please review attached documents.
Humberto_Landry
Wells Fargo Advisors
817-560-2635 office
817-165-8063 cell
Humberto_Landry@wellsfargo.com
Investments in securities and insurance products are:
NOT FDIC-INSURED/NO BANK-GUARANTEES/MAY LOSE VALUE
Wells Fargo Advisors, LLC is a nonbank affiliate of Wells Fargo & Company, Member FINRA/SIPC. 1 North Jefferson, St. Louis, MO 63103
CONFIDENTIAL NOTICE: The contents of this message, including any attachments, are confidential and are intended solely for the use of the person or entity to whom the message was addressed. If you are not the intended recipient of this message, please be advised that any dissemination, distribution, or use of the contents of this message is strictly prohibited. If you received this message in error, please notify the sender. Please also permanently delete all copies of the original message and any attached documentation. Thank you.

Cisco Security analysts examine real-world email 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 email 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. Email 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 email and hostile web URLs from being passed to the end user.

Related Links
Cisco Security
Cisco SenderBase Security Network
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
IntelliShieldThreat Outbreak Alert Original Release Base

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


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.
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