Threat Outbreak Alert RuleID21871: Email Messages Distributing Malicious Software on March 24, 2016

Medium

Alert ID:

44281

First Published:

2016 March 24 15:48 GMT

Last Updated:

2016 March 25 13:37 GMT

Version:

2

Summary

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

Email messages that are related to this threat (RuleID21871 and RuleID21871KVR) may contain the following files:

Name	Size in Bytes	MD5 Checksum
Nf-E748394809.zip / Nf-E748394809.vbe	Not Available	0x174107629D313508389B6EFAEEF8F2EC
Nf-E748394809.zip / Nf-E748394809.vbe	Not Available	0xECC8927B4A3032230A24527753E23C6D

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

> Subject: Nota Fiscal Eletronica.

Message Body:

Emissão de NF-e (Nota Fiscal Eletrônica)
Prezado (A)
Foi emitida uma NF-e (Nota Fiscal Eletrônica)
referente ao seu pedido nº 748394809, realizado em 21/03/2016 as 16:21
NF-e Nota Fiscal Eletrônica em 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.

Related Links
Cisco Security
Cisco SenderBase Security Network

Revision History

* Version	Description	Section	Date
2	Cisco Security has detected significant activity on March 24, 2016.		2016-March-25 13:37 GMT
1	Cisco Security has detected significant activity on March 24, 2016.		2016-March-24 15:48 GMT
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