Cisco Security has detected significant activity related to spam e-mail messages that claim to a confidential message for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment to view or print the document. 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 (RuleID5093) may contain the following files:
To ALL Employees.zip
To ALL Employees.exe
The To ALL Employees.exe
file in the To ALL Employees.zip
attachment has a file size of 113,152 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xAFEAEBDC30B5296684AF30298C916E46
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: To all Employees - Confidential Message
Your document has been completed
Sent on behalf of firstname.lastname@example.org.
All parties have completed the envelope 'Please DocuSign this document: To All Employees 2013.pdf'.
To view or print the document download the attachment .
(self-extracting archive, Adobe PDF)
This document contains information confidential and proprietary to miffcrffodf.com
LEARN MORE: New Features | Tips & Tricks | Video Tutorials
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 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.
Cisco Threat Operations Center
Cisco SenderBase Security Network