Threat Outbreak Alert: Email Messages with Malicious Attachments on September 18, 2013

2013-09-18T19:34:45
ID CISCO-THREAT-30868
Type ciscothreats
Reporter Cisco
Modified 2013-09-18T19:34:45

Description

Medium

Alert ID:

30868

First Published:

2013 September 18 19:34 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that contain a malicious attachment for the recipient. The text in the message body attempts to convince the recipient to open the attachment for details. However, the .zip attachment contains a malicious .exe file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID7137) may contain the following files:

> MMS18_13.zip
MMS18_13.exe

The MMS18_13.exe file in the MMS18_13.zip attachment has a file size of 46,592 bytes. The MD5 checksum, which is an unique identifier of the executable, is the following string: 0xD30E50489AFDC6BD51CE39AF38DC7EC4

The following text is a sample of the email message that is associated with this threat outbreak:

> Message Body:

18092013MMSCETR

Cisco Security analysts examine real-world email 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 email 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. Email 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 email and hostile web URLs from being passed to the end user.

Related Links
Cisco Security
Cisco SenderBase Security Network

Revision History

  • Version | Description | Section | Date
    ---|---|---|---
    1 | Initial Release | | 2013-September-18 19:34 GMT
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