Threat Outbreak Alert: Fake Software Security Update Email Messages on May 17, 2014

2014-05-16T13:47:24
ID CISCO-THREAT-34254
Type ciscothreats
Reporter Cisco
Modified 2014-05-19T13:17:12

Description

Medium

Alert ID:

34254

First Published:

2014 May 16 13:47 GMT

Last Updated:

2014 May 19 13:17 GMT

Version:

2

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain a software security update for the recipient. 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 (RuleID9997 and RuleID9997KVR) may contain the following files:

> tompmcmeekan.zip
tompmcmeekan.exe
tntcarlo.zip
tntcarlo.exe

The tompmcmeekan.exe in the tompmcmeekan.zip file has a file size of 231,936 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xF6D98F7BF217B1F9E574DFEAD2E83A9F

The tntcarlo.exe file in the tntcarlo.zip attachment has a file size of 232,960 bytes. The MD5 checksum is the following string: 0x4F8817EFA9ED7D055833D43FE83A22A8

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

> Subject: Greetings , your Facebook login name is blocked. 67446

Message Body:

In the past months, our network has been hacked so we ask you to download the attached program. It will generate a safe connection to our servers so your pc can be secure.
You need to type the following keyword : tompmcmeekan7
Facebook is trying to warn all of our users in no time but we have moderate emailing resources. We would be very thankful if you would transmit the attached app to your friends and family ASAP.
NOTICE that this utility is only accessible with a PC

Or

> Message Body:

In the past months, our network has been hacked so we urge you to download the attached utility. This will generate a safe connection to our network so your computer will be secure.
Please use the following key : tntcarlo5
Facebook is trying to reach all our users immediately but our email capacity are moderate. Our network will be very appreciative if you will send the attached utility to your friends and family urgently.

> 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
    ---|---|---|---
    2 | Cisco Security has detected significant activity on May 17, 2014. | | 2014-May-19 13:17 GMT
    1 | Cisco Security has detected significant activity on May 16, 2014. | | 2014-May-16 13:47 GMT
    Show Less

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