Threat Outbreak Alert: Email Messages with Malicious Attachments on January 22, 2014

2014-01-23T15:17:54
ID CISCO-THREAT-32545
Type ciscothreats
Reporter Cisco
Modified 2014-01-23T15:17:54

Description

Medium

Alert ID:

32545

First Published:

2014 January 23 15:17 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that contain malicious attachments for the recipient. The text in the email message attempts to convince the recipient to open the attachment. 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 (RuleID8587) may contain the following files:

> _WYR675.zip
WYR675.exe _

The WYR675.exe file in the WYR675.zip attachment has a file size of 326,089 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xD1500A497BAD8437A1BE9988D6DD1853

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 | | 2014-January-23 15:17 GMT
    Show Less

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