Threat Outbreak Alert: Fake Documents Attachment Email Messages on June 10, 2013

2013-06-10T18:50:47
ID CISCO-THREAT-29622
Type ciscothreats
Reporter Cisco
Modified 2013-06-11T14:28:40

Description

Medium

Alert ID:

29622

First Published:

2013 June 10 18:50 GMT

Last Updated:

2013 June 11 14:28 GMT

Version:

2

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain important documents from Wells Fargo for the recipient. The text in the email message attempts to convince the recipient to open the attachment to view or print the document. 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 (RuleID6257 and RuleID6257KVR) may contain the following files:

> WellsFargo.bijznn.zip
Important WellsFargo Docs.exe

_WellsFargo.angel.rodriguez.zip
Important WellsFargo Doc.exe _

The Important WellsFargo Docs.exe file in the WellsFargo.bijznn.zip attachment has a file size of 114,176 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x47E739106C24FBF52ED3B8FD01DC3668

The Important WellsFargo Doc.exe file in the WellsFargo.angel.rodriguez.zip attachment has a file size of 94,720 bytes. The MD5 checksum is the following string: 0x70E604777A66980BCC751DCB00EAFEE5

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

>
Subject: IMPORTANT - WellsFargo

Message Body:

Please check attached documents.
Gino_Blackwell
Wells Fargo Advisors
ATTENTION: THIS E-MAIL MAY BE AN ADVERTISEMENT OR SOLICITATION FOR PRODUCTS AND SERVICES.
To unsubscribe from marketing e-mails from:
An individual Wells Fargo Advisors financial advisor: Reply to one of his/her e-mails and type “Unsubscribe” in the subject line.
Wells Fargo and its affiliates: Unsubscribe at www.wellsfargoadvisors.com/unsubscribe.
Neither of these actions will affect delivery of important service messages regarding your accounts that we may need to send you or preferences you may have previously set for other e-mail services.
For additional information regarding our electronic communication policies, visit hxxp://wellsfargoadvisors.com/disclosures/email-disclosure.html . Investments in securities and insurance products are:
NOT FDIC-INSURED/NO BANK-GUARANTEES/MAY LOSE VALUE
Wells Fargo Advisors, LLC is a nonbank affiliate of Wells Fargo & Company, Member FINRA/SIPC. 1 North Jefferson, St. Louis, MO 63103

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 Threat Operations Center
Cisco SenderBase Security Network

Revision History

  • Version | Description | Section | Date
    ---|---|---|---
    2 | Cisco Security has detected significant activity on June 10, 2013. | | 2013-June-11 14:28 GMT
    1 | Cisco Security has detected significant activity on June 10, 2013. | | 2013-June-10 18:50 GMT
    Show Less

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