{"id": "CISCO-THREAT-31493", "type": "ciscothreats", "bulletinFamily": "info", "title": "Threat Outbreak Alert: Fake Invoice Notification Email Messages on October 24, 2013", "description": "Medium\n\nAlert ID: \n\n31493\n\nFirst Published:\n\n2013 October 25 14:19 GMT\n\nVersion: \n\n1\n\n## \n\nSummary \n\n * Cisco Security has detected significant activity related to Portuguese-language spam email messages that claim to contain an electronic invoice notification for the recipient. The text in the email message attempts to convince the recipient to open the attachment to view the details. However, the _.zip_ attachment contains a malicious _.exe_ file that, when executed, attempts to infect the system with malicious code. \n \nEmail messages that are related to this threat (RuleID7602) may contain the following files: \n\n\n> _Nf Vivo.zip \nNf Vivo.exe_\n\nThe _Nf Vivo.exe_ file in the _Nf Vivo.zip_ attachment has a file size of 810,886 bytes. The MD5 checksum, which is a unique identifier of the executable, is the following string: 0x22AECDBB50FAFF6BAAC1B477B9F43785 \n \nThe following text is a sample of the email message that is associated with this threat outbreak: \n\n\n> Subject: **Vivo - Emiss\u00e3o de nota fiscal eletr\u00f4nica.** \n \nMessage Body: \n \n**Sr(a). Contribuinte, \nEstamos enviando esta mensagem da Nota Fiscal Eletr\u00f4nica de Servi\u00e7os No. 27-13 \nemitida pelo prestador de servi\u00e7os: \nRaz\u00e3o Social: VIVO PARTICIPA\u00c7\u00d5ES S...A. \nEmail: ASSISTENTEFINANCEIRO@VIVO.COM.BR \nNIRE 35.3.0015879-1 \nCNPJ: 02.558.074/0001-73 \nPara visualiz\u00e1-la acesse o link a seguir: \nClique Aqui..**\n\nCisco 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. \n \nCisco 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. \n \n**Related Links** \n[Cisco Security](<http://www.cisco.com/security>) \n[Cisco SenderBase Security Network](<http://www.senderbase.org/>)\n\n## \n\nRevision History \n\n * Version | Description | Section | Date \n---|---|---|--- \n1 | Initial Release | | 2013-October-25 14:19 GMT \nShow Less\n\n* * *\n\n## \n\nLegal Disclaimer \n\n * 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. \n\nA 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 \n", "published": "2013-10-25T14:19:59", "modified": "2013-10-25T14:19:59", "cvss": {"score": 0.0, "vector": "NONE"}, "href": "http://tools.cisco.com/security/center/viewThreatOutbreakAlert.x?alertId=31493", "reporter": "Cisco", "references": [], "cvelist": [], "lastseen": "2018-07-26T12:05:07", "viewCount": 0, "enchantments": {"score": {"value": 1.5, "vector": "NONE", "modified": "2018-07-26T12:05:07", "rev": 2}, "dependencies": {"references": [], "modified": "2018-07-26T12:05:07", "rev": 2}, "vulnersScore": 1.5}, "ciscoThreat": {"md5": null, "subject": "Vivo - Emiss\u00e3o de nota fiscal eletr\u00f4nica.", "messageBody": "Sr(a). Contribuinte,\nEstamos enviando esta mensagem da Nota Fiscal Eletr\u00f4nica de Servi\u00e7os No. 27-13\nemitida pelo prestador de servi\u00e7os:\nRaz\u00e3o Social: VIVO PARTICIPA\u00c7\u00d5ES S...A.\nEmail: ASSISTENTEFINANCEIRO@VIVO.COM.BR\nNIRE 35.3.0015879-1\nCNPJ: 02.558.074/0001-73\nPara visualiz\u00e1-la acesse o link a seguir:\nClique Aqui..", "files": null, "size": null}, "immutableFields": []}

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