Threat Outbreak Alert: Fake Annual Authorization Form Attachment Email Messages on October 31, 2013

2013-10-31T19:51:24
ID CISCO-THREAT-31588
Type ciscothreats
Reporter Cisco
Modified 2013-10-31T19:51:24

Description

Medium

Alert ID:

31588

First Published:

2013 October 31 19:51 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain an authorization form to use privately owned vehicles on state business. The text in the email message attempts to convince the recipient to open the attachment for 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 (RuleID7675 and RuleID7675KVR) may contain the following files:

> _STD_261.zip
STD_261.exe
Form_STD_261.zip
Form_STD_261.exe _

The STD_261.exe file in the STD_261.zip attachment has a file size of 19,456 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xD71C7B2BD496663A41A68A63779AD328

The Form_STD_261.exe file in the Form_STD_261.zip attachment has a file size of 26,112 bytes. The MD5 checksum is the following string: 0xC481F3955B719885362A39C76DF021BC

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

> Subject: Annual Form - Authorization to Use Privately Owned Vehicle on State Business

Message Body:

All employees need to have on file this form STD 261 (attached). The original is retained by supervisor and copy goes to Accounting. Accounting need this form to approve mileage reimbursement.
The form can be used for multiple years, however it needs to re-signed annually by employee and supervisor.
Please confirm all employees that may travel using their private car on state business (including training) has a current STD 261 on file. Not having a current copy of this form on file in Accounting may delay a travel reimbursement claim.

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-October-31 19:51 GMT
    Show Less

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