Threat Outbreak Alert: Email Messages Distributing Malicious Software on May 22, 2014

2014-05-22T12:07:18
ID CISCO-THREAT-34326
Type ciscothreats
Reporter Cisco
Modified 2014-05-23T12:25:24

Description

Medium

Alert ID:

34326

First Published:

2014 May 22 12:07 GMT

Last Updated:

2014 May 23 12:25 GMT

Version:

2

Summary

  • Cisco Security has detected significant activity related to spam email messages that contain a blank message body with an attached document for the recipient. The email message attempts to persuade the recipient to open the attachment and view the details. However, the .zip attachment contains a malicious .cpl file that, when executed, attempts to infect the system with malicious code.

Email messages that are related to this threat (RuleID10069 and RuleID10069KVR) may contain the following files:

> Nota-Fiscal-Eletronica-Word.zip
Nota-Fiscal-Eletronica-Word.cpl

The Nota-Fiscal-Eletronica-Word.cpl file in the Nota-Fiscal-Eletronica-Word.zip attachment has a file size of 366,592 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0xD7E4E865E1837FF400090E698178E8D0

A variant of the Nota-Fiscal-Eletronica-Word.cpl file in the Nota-Fiscal-Eletronica-Word.zip attachment has a file size of 563,712 bytes. The MD5 checksum is the following string: 0x9CAE06BA6521BFF70296103F8552A015

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

> Message Body:

Bom Dia !
Conforme contato anterior segue em anexo notas fiscais .
NF-eletronica-22/05/2014
522,3Kb
Ruth Alves
Alfa Ltda
Setor Comercial

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 22, 2014. | | 2014-May-23 12:25 GMT
    1 | Cisco Security has detected significant activity on May 21, 2014. | | 2014-May-22 12:07 GMT
    Show Less

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