Threat Outbreak Alert: Fake Fax Delivery Notification Email Messages on September 11, 2013

2013-09-13T01:51:05
ID CISCO-THREAT-30762
Type ciscothreats
Reporter Cisco
Modified 2013-09-13T01:51:05

Description

Medium

Alert ID:

30762

First Published:

2013 September 13 01:51 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain a fax delivery notification for the recipient. The text in the email message attempts to convince the recipient to open the link and view the details. However, the link contains a malicious .scr file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID7069) may contain the following file:

> pdf_efax_5125243331.zip
pdf_efax_5125243331.scr

The pdf_efax_5125243331.scr file in the pdf_efax_5125243331.zip attachment has a file size of 332,288 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x2719A4B64E8A5BF995F8EC7B50B0F6F2

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

> Subject: eFax message from 15122789800 - 1 page(s), Caller-ID: 512-278-9800 > > Message Body: > > Fax Message [Caller-ID: 512-278-9800]
You have received a 1 page fax at 2013-09-11 08:56:56 CDT.
* The reference number for this fax is min1_did13-1368734175-5125243339-49.
View this fax online, on our website : hxxp://www.efax.com/faxes/view_fax.aspx?fax_id=5125243339
Please visit www.eFax.com/en/efax/twa/page/help if you have any questions regarding this message or your service.
Thank you for using the eFax service!

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-September-13 01:51 GMT
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