Threat Outbreak Alert: Fake Tax Information Notification Email Messages on October 16, 2013

2013-10-16T15:14:29
ID CISCO-THREAT-31288
Type ciscothreats
Reporter Cisco
Modified 2013-10-16T15:14:29

Description

Medium

Alert ID:

31288

First Published:

2013 October 16 15:14 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claims to contain a tax refund 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 (RuleID7456) may contain the following files:

> ATO_TAX.zip
ATO_TAX_101613.exe

The ATO_TAX_101613.exe file in the ATO_TAX.zip attachment has a file size of 24,576 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x1A339ECFAC8D2446E2F9C7E7FF639C56

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

> Subject: Australian Taxation Office - Refund Notification

Message Body:

Australian Taxation Office
10/16/2013
TAX REFUND NOTIFICATION
After the last calculation of your fiscal activity we have determined that you are eligible to receive a refund of 2235.78 AUD.
For more details please follow the steps bellow :
- Right-click the link on the attachment name, and select Save Link As, Save Target As or a similar option provided.
- Select the location into which you want to download the file and choose Save.
- Open the file Microsoft Word file to view the details.
Bernice Wagner,
Tax Refund Department
Australian Taxation Office

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
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Revision History

  • Version | Description | Section | Date
    ---|---|---|---
    1 | Initial Release | | 2013-October-16 15:14 GMT
    Show Less

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