Threat Outbreak Alert: Misleading File Sharing E-mail Messages on August 1, 2012
IntelliShield: Threat Outbreak Alert
2012 August 02 14:38 GMT
2012 August 02 14:38 GMT
Cisco Security has detected significant activity on August 1, 2012.
Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a file sharing tool download link for the recipient. The text in the e-mail message may attempt to convince the recipient to open the link and view the details. However, the link references a malicious .exe file that, when executed, attempts to infect the system with malicious code
E-mail messages that are related to this threat (RuleID4414) may contain the following file:
The Flashfxp.exe file has a file size of 53,248 bytes. The MD5 checksum, which is a unique identifier of this executable file, is the following string: 0x01EC264B82D938B5D7FDD6A51D73DECD
The following text is an example of the e-mail messages that are associated with this threat outbreak:
Subject Line: Important File
I want to sent you some files,but they are too large to send as email attachments,so I create an ftp server. I will give you an ftp client software and you can download these files through it.
The FTP tools Download in: hxxp://188.8.131.52/documents/Flashfxp.exe
These files are confidential and please keep them secret,including the username and the password.
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 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.
The security vulnerability applies to the following combinations of products.
Threat Outbreak Alert
Original Release Base
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.
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.