Threat Outbreak Alert RuleID23998: Email Messages Distributing Malicious Software on August 14, 2016

Medium

Alert ID:

48475

First Published:

2016 August 15 16:17 GMT

Version:

1

Summary

• Cisco Security has detected significant activity related to spam email messages distributing malicious software.

Email messages that are related to this threat (RuleID23998) may contain the following files:

Name	Size in Bytes	MD5 Checksum
NFe35160704429377000626550180000994151005007354.jar
Not Available
0xED64631D34DD4F2BFBEDECDA1F621F86

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

> > > Subject: **Segue em anexo a Nota Fiscal eletrônica nº 19713 no formato XML. - 11:53:54 **
Messsage Body:

**Prezados senhores,
Protocolo nº 135160446701641, emitida em 26/07/2016 815710604190826
Atenciosamente,
**

Cisco security appliances can help protect customers during the critical period between the first exploit of a virus outbreak and the release of vendor antivirus signatures. Cisco Web Security Appliances help secure and control web and email traffic by offering layers of malware protection. Cisco security appliances are automatically updated to help prevent both spam email and hostile web URLs from being passed to the end user.

Revision History

* Version	Description	Section	Date
1	Initial Release	—	2016-August-15
Show Less

---

Legal Disclaimer

• THIS DOCUMENT IS PROVIDED ON AN “AS IS” BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products