{"id":942,"date":"2021-01-21T23:52:26","date_gmt":"2021-01-21T23:52:26","guid":{"rendered":"https:\/\/safealliance.pt\/?p=942"},"modified":"2021-01-21T23:53:59","modified_gmt":"2021-01-21T23:53:59","slug":"novo-crypto-miner-em-nas-qnap","status":"publish","type":"post","link":"https:\/\/safealliance.pt\/en\/novo-crypto-miner-em-nas-qnap\/","title":{"rendered":"Novo Crypto-Miner em NAS QNAP"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

QNAP avisa os utilizadores sobre um novo Crypto-miner chamado Dovecat que est\u00e1 a infectar os seus dispositivos.<\/p>\n\n\n\n

A QNAP refere que o malware tem como alvo dispositivos NAS com passwords fracas.<\/p>\n\n\n\n

O fornecedor de hardware sediado em Taiwan, QNAP, publicou um comunicado de seguran\u00e7a alertando os clientes sobre uma nova variante de malware chamada Dovecat, que atualmente tem como alvo a sua linha de dispositivos de armazenamento de rede (NAS) para utilizar abusivamente os recursos locais e minerar criptomoeda de forma inc\u00f3gnita dos seus utilizadores.<\/p>\n\n\n\n

A empresa disse que o malware est\u00e1 se espalhando devido a expor-se online sistemas NAS da QNAP utilizando password fracas.<\/p>\n\n\n\n

O comunicado de seguran\u00e7a surgiu depois de a empresa ter come\u00e7ado a receber relat\u00f3rios de seus utilizadores, no ano passado sobre dois processos desconhecidos – denominados dovecat [1, 2] e dedpma – que funcionavam sem parar e consumiam a mem\u00f3ria do dispositivo.<\/p>\n\n\n\n

Pode-se verificar se o dispositivo est\u00e1 infectado, procurando os referidos processos dovecat<\/strong> e dedpma<\/strong>, na lista de processos em execu\u00e7\u00e3o:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Matthew Ruffell, um engenheiro de software da Canonical e fundador do Dapper Linux, analisou o malware no passado ano, quando o encontrou num sistema Ubuntu Linux.<\/p>\n\n\n\n

De acordo com sua an\u00e1lise, o malware \u00e9 capaz de infectar qualquer sistema Linux, mas parecia ter sido projetado especificamente para a estrutura interna dos dispositivos NAS da QNAP.<\/p>\n\n\n\n

A utiliza\u00e7\u00e3o do nome de processo “dovecat” tamb\u00e9m foi propositada, para que o malware se tentasse passar como Dovecot, que \u00e9 um daemon de e-mail leg\u00edtimo que vem com o firmware QNAP e muitas distribui\u00e7\u00f5es Linux.<\/p>\n\n\n\n

Mas, como Ruffell referiu, os ataques de Dovecat foram indiscriminados. Infec\u00e7\u00f5es semelhantes tamb\u00e9m foram relatadas por utilizadores de dispositivos NAS Synology, onde o malware tamb\u00e9m parecia ter funcionado sem problemas.<\/p>\n\n\n\n

Uma vez que o factor de infec\u00e7\u00e3o estava relacionado com passwords fracas, para evitar infec\u00e7\u00f5es com esta nova amea\u00e7a, a QNAP recomenda aos utilizadores que:<\/p>\n\n\n\n

  • Use passwords de administrador mais fortes.<\/li>
  • Use passwords mais fortes para administradores de bases de dados.<\/li>
  • Desabilite os servi\u00e7os SSH e Telnet se n\u00e3o estiverem em uso.<\/li>
  • Desabilite servi\u00e7os e aplica\u00e7\u00f5es n\u00e3o utilizadas.<\/li>
  • Evite usar n\u00fameros de porta padr\u00e3o (80, 443, 8080 e 8081).<\/li>
  • Atualize o QTS para a vers\u00e3o mais recente.<\/li>
  • Instale a vers\u00e3o mais recente do Removedor de Malware.<\/li>
  • Instale o Conselheiro de Seguran\u00e7a e execute a Pol\u00edtica de Seguran\u00e7a Intermedi\u00e1ria (ou superior).<\/li>
  • Instale uma firewall.<\/li>
  • Habilite a Prote\u00e7\u00e3o de Acesso \u00e0 Rede para proteger contas de ataques de for\u00e7a bruta.<\/li>
  • Siga as pr\u00e1ticas recomendadas para aumentar a seguran\u00e7a NAS. <\/li><\/ul>\n\n\n\n

    Mas no grande esquema das coisas, Dovecat n\u00e3o \u00e9 a primeira variante de malware a ter como alvo dispositivos QNAP. Os sistemas de armazenamento QNAP tamb\u00e9m eram anteriormente visados \u200b\u200bpelo Muhstik ransomware, o malware QSnatch, o ransomware ec0raix e o ransomware AgeLocker.<\/p>\n","protected":false},"excerpt":{"rendered":"

    QNAP avisa os utilizadores sobre um novo Crypto-miner chamado Dovecat que est\u00e1 a infectar os seus dispositivos. A QNAP refere que o malware tem como alvo dispositivos NAS com passwords fracas. O fornecedor de hardware sediado em Taiwan, QNAP, publicou um comunicado de seguran\u00e7a alertando os clientes sobre uma nova …<\/p>\n","protected":false},"author":2,"featured_media":944,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[20,19,21,18,23,22,24],"yoast_head":"\nNovo Crypto-Miner em NAS QNAP - SAFEALLIANCE LDA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/safealliance.pt\/novo-crypto-miner-em-nas-qnap\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Novo Crypto-Miner em NAS QNAP - SAFEALLIANCE LDA\" \/>\n<meta property=\"og:description\" content=\"QNAP avisa os utilizadores sobre um novo Crypto-miner chamado Dovecat que est\u00e1 a infectar os seus dispositivos. 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