Cisco Security Intelligence Operations has detected significant activity related to spam e-mail messages that claim to inform the recipient of a malicious message. The e-mail message contains an .exe file that, when opened, attempts to infect the system with malicious code.
E-mail messages that are related to this threat (RuleID2969KVR) may contain the following file: Votre_Facture.pdf.exe
The Votre_Facture.pdf.exe file has a file size of 110,592 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x624AD960920899ECF1C24DF37769BC4F
The following text is a sample of the e-mail message that is associated with this threat outbreak:
WARNING: Your email security system has determined the message below may be a potential threat.
It may contain a virus or other malicious software that is installed when the attachment is opened. Do not open suspicious attachments.
If you do not know the sender or cannot verify the integrity of the message, please do not respond or click on links in the message. Depending on the security settings, clickable URLs may have been modified to provide additional security.
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.
Cisco Security Intelligence Operations
Cisco Threat Operations Center
Cisco SenderBase Security Network