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Threat Outbreak Alert

Threat Outbreak Alert: Fake Deposit Report E-mail Messages on June 10, 2010

 
Threat Type:IntelliShield: Threat Outbreak Alert
IntelliShield ID:20699
Version:1
First Published:2010 June 11 13:04 GMT
Last Published:2010 June 11 13:04 GMT
Port: Not available
Urgency:Possible use
Credibility:Confirmed
Severity:Harassment
 
 
Version Summary:

Cisco Security Intelligence Operations has detected significant activity on June 10, 2010.

 

Description
 

Cisco Security Intelligence Operations has detected significant activity related to Portuguese-language spam e-mail messages that claim to contain an attached report from the United States Office of Foreign Assets Control (OFAC).? The text in the e-mail message instructs the recipient to open the attachment to view the report.? However, the document is a malicious .xls file that,?when executed, attempts to infect the target system with malicious code.?

E-mail messages that are related to this threat (RuleID2807) may contain the following file: ofac_deposit.xls

The ofac_deposit.xls file has an approximate file size of 64,512 bytes.? The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x326c99b68eadb98da375b5dcb7685cf7

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

Subject: OFAC has declined your deposit.

Message Body:

We hereby inform you that your transaction has been blocked by OFAC, dated 07/06/2010. If you are aware of the problem please retry the transaction as soon as possible to validate your deposit within the week.
Please view the attached report of the declined deposit by OFAC, the file is a Microsoft Excell Spreadsheet.
United States Department of the Treasury.

E-mail messages related to this threat appear to be associated with the Trojan/DocDrop-Q malware, which exploits a vulnerability in Microsoft Excel that is described in IntelliShield Alert 19322.? This trojan attempts to download and execute another executable file that contains characteristics of the self-propagating Mal/Koobface-G worm.

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 IronPort systems to protect customers.? This report will be updated if there are significant changes or if the risk to end users increases.

Cisco IronPort 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 IronPort web security appliances will not be impacted by these attacks.? Cisco IronPort 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
 

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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