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Threat Outbreak Alert

Threat Outbreak Alert: Fake Account Compromise Notification E-mail Messages on May 17, 2013

 
Threat Type:IntelliShield: Threat Outbreak Alert
IntelliShield ID:29357
Version:2
First Published:2013 May 17 14:22 GMT
Last Published:2013 May 17 17:47 GMT
Port: Not available
Urgency:Possible use
Credibility:Confirmed
Severity:Harassment
 
Version Summary:Cisco Security Intelligence Operations has detected significant activity on May 17, 2013.
 

Description
 
Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to contain an account compromise notification for the recipient. The text in the e-mail 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.

E-mail messages that are related to this threat (RuleID6063) may contain any of the following files:

cook.zip
cook.exe
inf2-3899.zip
inf2-3899.exe

The cook.exe file in the cook.zip attachment has a file size of 147,456 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x73F1980C8B572534B7E34494D9245154

The inf2-3899.exe file in the inf2-3899.zip attachment has a file size of 324,568 bytes. The MD5 checksum is the following string: 0x4CEA269B23C8D28FF40799AF1F9C7BEA

The following text section is a sample of the e-mail message that is associated with this threat outbreak:

Subject: Hello Cook, Jason, your Facebook username has been restricted.

Message Body:

For the past weeks, facebook was hacked so you are asked to download the attached utility. It will enable a trusted connection to our network and your computer will be secure.
We are trying to reach all of our users immediately but we have limited emailing resources. Our site would be thankful if you would mail the attached utility to your friends and family as soon as possible.

Or

Message Body:

Sehr geehrter Auftraggeber,
Die Kopie der Quittung wird als Beilage zugesandt.erfolgreich

Cisco 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 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.

Related Links
Cisco Security Intelligence Operations
Cisco Threat Operations Center
Cisco SenderBase Security Network
 
Alert History
 

Version 1, May 17, 2013, 2:22 PM: Cisco Security Intelligence Operations has detected significant activity on May 16, 2013.



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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