Threat Outbreak Alert: Fake Voice Message Delivery Email Messages on November 21, 2013

2013-11-21T20:11:13
ID CISCO-THREAT-31853
Type ciscothreats
Reporter Cisco
Modified 2013-11-21T20:11:13

Description

Medium

Alert ID:

31853

First Published:

2013 November 21 20:11 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain a voice message for the recipient. The text in the email message attempts to convince the recipient to open the attachment to listen to the message. 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 (RuleID7972) may contain the following files:

> voice_c10a9d.zip
voice_ID_CF345991EF23420847459756459235649856324956956539485
749835060349250694564389563495605974985634598364953984650324506324502934FF.exe

The voice_ID_CF345991EF23420847459756459235649856324956956539485
749835060349250694564389563495605974985634598364953984650324506324502934FF.exe
file in the voice_c10a9d.zip attachment has a file size of 377,344 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x0403F7B02E05D7864B42BB96C49267FE

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

> Subject: Orange MMS Service

Message Body:

Orange Voice Message
This e-mail contains a voice message.
Download and listen to message in attached file.
Mobile: +447024599699
Passcode: BBAA55447F

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-21 20:11 GMT
    Show Less

Legal Disclaimer

  • THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products