Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a secure message from Key bank for the recipient. The text in the e-mail message instructs the recipient to open a .zip
attachment to view 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 (RuleID4879) may contain the following file:
file in the securedoc.zip
archive has a file size of 122,880 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xE6F40AA4CE0AD98B4A623E6318BDE8D8.
The following text is a sample of the e-mail message that is associated with this threat outbreak:
Subject: You have received a secure message
You have received a secure message
Read your secure message by opening the attachment, SECUREDOC. You will be prompted to open (view) the file or save (download) it to your computer. For best results, save the file first, then open it.
If you have concerns about the validity of this message, please contact the sender directly. For questions about Key's e-mail encryption service, please contact technical support at 888.764.7941.
First time users - will need to register after opening the attachment.
Help - hxxps://mailsafe.keybank.com/websafe/help?topic=RegEnvelope
About IronPort Encryption - https://mailsafe.keybank.com/websafe/about
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.
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