{"id":42943,"date":"2020-02-17T14:41:56","date_gmt":"2020-02-17T11:41:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/iz-chrome-web-store-udaleno-bolee-500-vredonosnyh-dopolnenij"},"modified":"2020-02-17T14:41:56","modified_gmt":"2020-02-17T11:41:56","slug":"iz-chrome-web-store-udaleno-bolee-500-vredonosnyh-dopolnenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/iz-chrome-web-store-udaleno-bolee-500-vredonosnyh-dopolnenij","title":{"rendered":"Mais de 500 complementos maliciosos foram removidos da Chrome Web Store","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Resultados consolidados<\/a><\/noindex> do bloqueio de uma s\u00e9rie de extens\u00f5es maliciosas para o navegador Chrome, das quais foram v\u00edtimas milh\u00f5es de usu\u00e1rios. Na primeira fase, a pesquisadora independente Jamila Kaya (Jamila Kaya<\/a><\/noindex>) e a empresa Duo Security identificaram 71 extens\u00f5es maliciosas no cat\u00e1logo Chrome Web Store. No total, essas extens\u00f5es somavam mais de 1,7 milh\u00e3o de instala\u00e7\u00f5es. Ap\u00f3s informar o Google sobre o problema, foram encontradas mais de 430 extens\u00f5es semelhantes no cat\u00e1logo, cujo n\u00famero de instala\u00e7\u00f5es n\u00e3o foi divulgado. <\/p>\n

\u00c9 not\u00e1vel que, apesar do n\u00famero significativo de instala\u00e7\u00f5es, nenhuma das extens\u00f5es problem\u00e1ticas possui avalia\u00e7\u00f5es de usu\u00e1rios, o que levanta quest\u00f5es sobre como as extens\u00f5es foram instaladas e como a atividade maliciosa permaneceu indetectada. Atualmente, todas as extens\u00f5es problem\u00e1ticas foram removidas do Chrome Web Store.
\nDe acordo com os pesquisadores, a atividade maliciosa relacionada \u00e0s extens\u00f5es bloqueadas ocorre desde janeiro de 2019, mas dom\u00ednios individuais utilizados para realizar atividades maliciosas foram registrados j\u00e1 em 2017. <\/p>\n

Na maior parte, as extens\u00f5es maliciosas eram apresentadas como ferramentas para promover produtos e participar de servi\u00e7os publicit\u00e1rios (o usu\u00e1rio visualizava an\u00fancios e recebia compensa\u00e7\u00f5es). As extens\u00f5es utilizavam uma t\u00e9cnica de redirecionamento para sites anunciados ao abrir p\u00e1ginas que eram exibidas antes da exibi\u00e7\u00e3o do site solicitado. <\/p>\n

Todas as extens\u00f5es utilizavam uma t\u00e9cnica semelhante para ocultar a atividade maliciosa e burlar os mecanismos de verifica\u00e7\u00e3o das extens\u00f5es no Chrome Web Store. O c\u00f3digo de todas as extens\u00f5es era praticamente id\u00eantico em termos de c\u00f3digos-fonte, exceto pelos nomes das fun\u00e7\u00f5es, que eram \u00fanicos em cada extens\u00e3o. A transmiss\u00e3o da l\u00f3gica maliciosa era realizada a partir de servidores de controle centralizados. Inicialmente, a extens\u00e3o se conectava a um dom\u00ednio com o mesmo nome da extens\u00e3o (por exemplo, Mapstrek.com), ap\u00f3s o que era redirecionada para um dos servidores de controle que forneciam o script das a\u00e7\u00f5es subsequentes.<\/p>\n

Entre as a\u00e7\u00f5es realizadas por meio de extens\u00f5es, menciona-se o upload de dados confidenciais do usu\u00e1rio para servidores externos, o redirecionamento para sites maliciosos e a facilita\u00e7\u00e3o da instala\u00e7\u00e3o de aplicativos nocivos (por exemplo, aparece uma mensagem de infec\u00e7\u00e3o do computador e \u00e9 oferecido software malicioso sob a forma de antiv\u00edrus ou atualiza\u00e7\u00e3o do navegador). Entre os dom\u00ednios para os quais ocorreu o redirecionamento, figuram v\u00e1rios dom\u00ednios de phishing e sites voltados para a explora\u00e7\u00e3o de navegadores desatualizados, contendo vulnerabilidades n\u00e3o corrigidas (por exemplo, ap\u00f3s a explora\u00e7\u00e3o, houve tentativas de instala\u00e7\u00e3o de programas maliciosos que interceptam credenciais de acesso e analisam a transmiss\u00e3o de dados confidenciais atrav\u00e9s da \u00e1rea de transfer\u00eancia).<\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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