Threat Outbreak Alert: Fake Email Messages Distributing Malicious Software on May 17, 2014

2014-05-19T13:24:46
ID CISCO-THREAT-34264
Type ciscothreats
Reporter Cisco
Modified 2014-05-19T13:24:46

Description

Medium

Alert ID:

34264

First Published:

2014 May 19 13:24 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that contain malicious software 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 (RuleID10012) may contain the following files:

> jde.exe
jde.zip
guia59.exe
guia59.zip

The jde.exe file in the jde.zip attachment has a file size of 232,960 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x7495BECBE513A37EDFB6DE24AAA3BA33

The guia59.exe file in the guia59.zip attachment has a file size of 238,592 bytes. The MD5 checksum is the following string: 0x5DDD1C92C0872C1512882FEF2A427FB5

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

> Message Body:

During the last months, our network was under attack so you are urged to install the attached program. This will generate a secure connection to facebook so your pc will be safe.
You will need this key: jde4
We are attempting to reach all our members in no time but we have limited emailing capacity. Facebook will be thankful if you could email the attached program to your friends and family immediately.
IMPORTANT: you will only be able to access the file using a Microsoft Windows device

Or

> For the past months, facebook has been attacked so you are urged to open the attached app. This will generate a trusted connection to our network so you can be safe.
You should type this key: guia598
We are trying to reach all of our members urgently but our email resources are limited. Our company will be grateful if you would email the attached utility to your peers and relatives asap.
NOTE: this software is only readable by using a PC

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 | | 2014-May-19 13:24 GMT
    Show Less

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