Threat Outbreak Alert RuleID23619: Email Messages Distributing Malicious Software on June 28, 2016

Medium

Alert ID:

46868

First Published:

2016 June 28 13:52 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 (RuleID23619) may contain the following files:

Name	Size in Bytes	MD5 Checksum
NF.eletronica-268436163663864.zip / NF.eletronica-.exe	266,240
0x3896361634AB5A3365507FD659689F12

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

> Subject: Nota Fiscal Eletrônica de série/número 001/000000693, emitida em 24/06/2016

Message Body:

Esta mensagem refere-se à Nota Fiscal Eletrônica de série/número 001/000000693,
emitida em 24/06/2016 por:
Razão Social: CATIVA STORE
CNPJ: 11.641.067/0011-01
Para verificar a autorização da SEFAZ referente à nota acima mencionada,
acesse o sítio http://www.nfe.fazenda.gov.br/portal.
Chave de acesso: 41151211641067001101550010000006931990177646
Protocolo: 417415857315063
Obs.: Este e-mail foi enviado automaticamente pelo sistema de
Nota Fiscal Eletrônica (NF-e) da LINX SISTEMAS E CONSULTORIA LTDA.

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.

Related Links
Cisco Security
Cisco SenderBase Security Network

Revision History

* Version	Description	Section	Date
1	Initial Release		2016-June-28 13:52 GMT
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