Threat Outbreak Alert: Fake Westpac Secure Email Messages on March 13, 2013

2013-03-14T20:25:49
ID CISCO-THREAT-28593
Type ciscothreats
Reporter Cisco
Modified 2013-03-14T20:25:49

Description

Low

Alert ID:

28593

First Published:

2013 March 14 20:25 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam e-mail messages that claim to contain a secure message notification for the recipient. The text in the e-mail message attempts to convince the recipient to open the attachment and view the message. 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 (RuleID5532) may contain any of the following files:

> SecureMessage.zip
SecureMessage.exe

The SecureMessage.exe file in the SecureMessage.zip attachment has a file size of 135,680 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xBB4DD50A35BAB4C67AE5CCCFE60B1F02

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

> Subject: Westpac Secure Email Notification

Message Body:

You have received a secure message
Read your secure message by opening the attachment, SecureMessage.html. 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 with Internet Explorer.
If you have concerns about the validity of this message, please contact the sender directly. For questions please contact the Westpac Secure Email Help Desk

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 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 web security appliances will not be impacted by these attacks. Cisco 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
Cisco Threat Operations Center
Cisco SenderBase Security Network

Revision History

  • Version | Description | Section | Date
    ---|---|---|---
    1 | Initial Release | | 2013-March-14 20:25 GMT
    Show Less

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