Threat Outbreak Alert RuleID28661: Email Messages Distributing Malicious Software on April 10, 2017

Medium

Alert ID:

53386

First Published:

2017 April 10 19:15 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 (RuleID28661) may contain the following files:

Name	Size in Bytes	MD5 Checksum
NFe_182812118191317098308370473.zip / NFe_1001145433638911755968801111782.jar
61,338
0xD858836478F0FA9092B9342A5D3E1039

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

> Subject: Nota Fiscal Eletrônica-pedido 05/04/2017 07:59:45

Message Body:

NFS-S NOTA FISCAL DE SERVIÇOS - Eletronica-1073741826981123781989246 Este arquivo deve ser armazenado. Prezado(a) Cliente, Segue em anexo uma cópia digitalizada da Nota Fiscal-NFS-e 01-1073741826981123781989246 Por gentileza certifique-se que esta NFS-e é valida, Segue em anexo Data de Vencimento:05/04/2017 Chave de Acesso:01-1073741826981123781989246 Vocé está recebendo a Nota Fiscal de Serviços Eletrônica *Você precisa ter um visualizador de arquivo PDF instalado em seu computador para poder abrir o documento anexo.

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 to report significant activity detected by Cisco Security on April 10, 2017.	—	2017-April-10
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