Threat Outbreak Alert: Fake Voice Mail Message Notification Email Messages on December 24, 2013

2013-12-24T13:49:21
ID CISCO-THREAT-32275
Type ciscothreats
Reporter Cisco
Modified 2013-12-24T13:49:21

Description

Medium

Alert ID:

32275

First Published:

2013 December 24 13:49 GMT

Version:

1

Summary

  • Cisco Security has detected significant activity related to spam email messages that claim to contain a voice message notification for the recipient. The text in the email message attempts to convince the recipient to open the attachment to listen to the message. 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 (RuleID8316) may contain the following files:

> MSG_984-543-7897.zip
MSG_713-912-8821.exe

The MSG_713-912-8821.exe file in the MSG_984-543-7897.zip attachment has a file size of 19,968 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x2FC083FD967F2411451AEA04A03B2409

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

> Subject: Voice Message from Unknown Caller (984-543-7897)

Message Body:

Date: Tue, 24 Dec 2013 01:20:35 +0900
From: Voice Mail
To:
From: 984-543-7897
Sent: Tue, 24 Dec 2013 01:20:35 +0900
To: <dlhartman@majortechie.com>

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-December-24 13:49 GMT
    Show Less

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