Threat Outbreak Alert: Fake Invoice Document Confirmation Email Messages on December 9, 2013

2013-12-10T14:02:49
ID CISCO-THREAT-32099
Type ciscothreats
Reporter Cisco
Modified 2013-12-10T14:02:49

Description

Medium

Alert ID:

32099

First Published:

2013 December 10 14:02 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain an invoice document confirmation notification for the recipient. The text in the email message attempts to convince the recipient to open the attachment and view the 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 (RuleID8171) may contain the following files:

> Resolution 5.zip
Resolution 5.exe

The Resolution 5.exe file in the Resolution 5.zip attachment has a file size of 828,416 bytes. The MD5 checksum is the following string: 0xEE152D43CF0E1335CCA6E9B9402BC99D

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

> Subject: Re: Resolution 12/9/2013

Message Body:

Hi,
Per your request, the said invoice has been amended to reflect the new fee. All documentation and correspondences shall now reflect the new agreement as discussed.
A copy of this has been sent to your email dgiugler@firstam.com and to the others, too.
Please, see the attached document for confirmation. Should you require further information, please call my extension or Christy.
---
Regards
Paul Russell

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-December-10 14:02 GMT
    Show Less

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