2013 November 13 17:20 GMT
Email messages that are related to this threat (RuleID7837) may contain the following files:
The Payroll.exe file in the Payroll.zip attachment has a file size of 11,776 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xF995B739F04068897F9E6A476DC2CA89
The following text is a sample of the email message that is associated with this threat outbreak:
> Subject: Internal Payroll
File Validity: 13/11/2013
File Format: Office - Excel
Internal Name: Payroll
Legal Copyright: ) Microsoft Corporation. All rights reserved.
Original Filename: Payroll.xls
***** Confidentiality Notice *.
This e-mail and any file(s) transmitted with it, is intended for the exclusive use by the person(s) mentioned above as recipient(s).
This e-mail may contain confidential information and/or information protected by intellectual property rights or other rights. If you
are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken
in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this
e-mail in error, please notify the sender and delete the original and any copies of this e-mail and any printouts immediately from
your system and destroy all copies of it.**
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.
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