Threat Outbreak Alert: Email Messages Distributing Malicious Files on November 9, 2013

2013-11-11T20:45:17
ID CISCO-THREAT-31697
Type ciscothreats
Reporter Cisco
Modified 2013-11-11T20:45:17

Description

Medium

Alert ID:

31697

First Published:

2013 November 11 20:45 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages with a blank message body and attachment. The .zip attachment contains a malicious .scr file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID7773) may contain the following files:

> Transaction09112013.zip
Transaction09112013.scr

The Transaction09112013.scr file in the Transaction09112013.zip attachment has a file size of 143,872 bytes. The MD5 checksum is the following string: 0xA9389E3F5E4AE43DE475FFFC87AA63F7

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

> Message Body:

Grüße

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-November-11 20:45 GMT
    Show Less

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