{"id":54400,"date":"2019-12-25T00:00:00","date_gmt":"2019-12-24T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/kitajskih-hakerov-pojmali-na-obhode-dvuhfaktornoj-avtorizatsii"},"modified":"2020-02-18T14:02:24","modified_gmt":"2020-02-18T11:02:24","slug":"kitajskih-hakerov-pojmali-na-obhode-dvuhfaktornoj-avtorizatsii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/kitajskih-hakerov-pojmali-na-obhode-dvuhfaktornoj-avtorizatsii","title":{"rendered":"Hackers chineses foram pegos burlando a autentica\u00e7\u00e3o de dois fatores","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Hackers chineses foram capturados<\/a><\/noindex> contornando a autentica\u00e7\u00e3o de dois fatores, mas isso n\u00e3o \u00e9 certeza. Abaixo est\u00e3o as suposi\u00e7\u00f5es da empresa holandesa Fox-IT, especializada em servi\u00e7os de consultoria em ciberseguran\u00e7a. Sup\u00f5e-se, sem provas diretas, que uma equipe de hackers que atua para as estruturas governamentais chinesas foi nomeada APT20.<\/p>\n

\"Hackers<\/p>\n

A atividade hacker atribu\u00edda ao grupo APT20 foi detectada pela primeira vez em 2011. Entre 2016 e 2017, o grupo desapareceu do radar dos especialistas, e apenas recentemente a Fox-IT encontrou vest\u00edgios da interfer\u00eancia do APT20 nas redes de um de seus clientes, que solicitou uma investiga\u00e7\u00e3o sobre viola\u00e7\u00f5es de ciberseguran\u00e7a.<\/p>\n

De acordo com a Fox-IT, nos \u00faltimos dois anos, o grupo APT20 esteve envolvido em invas\u00f5es e acesso a dados de estruturas governamentais, grandes empresas e prestadores de servi\u00e7os nos EUA, Fran\u00e7a, Alemanha, It\u00e1lia, M\u00e9xico, Portugal, Espanha, Reino Unido e Brasil. Os hackers da APT20 tamb\u00e9m estiveram ativos em \u00e1reas como avia\u00e7\u00e3o, sa\u00fade, finan\u00e7as, seguros, energia e mesmo em setores como jogos de azar e fechaduras eletr\u00f4nicas.<\/p>\n

<\/center><\/p>\n

Normalmente, os hackers da APT20 usavam vulnerabilidades em servidores web e, especificamente, na plataforma de aplica\u00e7\u00f5es corporativas Jboss para acessar os sistemas das v\u00edtimas. Ap\u00f3s obter acesso e instalar shells, os hackers se infiltravam nas redes das v\u00edtimas em todos os sistemas poss\u00edveis. As contas encontradas permitiam que os criminosos roubassem dados usando ferramentas padr\u00e3o, sem a necessidade de instalar malware. Mas o maior problema \u00e9 que o grupo APT20 supostamente conseguiu contornar a autentica\u00e7\u00e3o de dois fatores usando tokens.<\/p>\n

\"Hackers<\/p>\n

Os pesquisadores afirmam ter encontrado vest\u00edgios de que os hackers se conectaram \u00e0s contas VPN protegidas por autentica\u00e7\u00e3o de dois fatores. Como isso aconteceu, os especialistas da Fox-IT s\u00f3 podem especular. A suposi\u00e7\u00e3o mais prov\u00e1vel \u00e9 que os hackers conseguiram roubar um token de software RSA SecurID do sistema comprometido. Com o programa roubado, os hackers podiam gerar c\u00f3digos de uso \u00fanico para contornar a prote\u00e7\u00e3o de dois fatores.<\/p>\n

Em condi\u00e7\u00f5es normais, isso \u00e9 imposs\u00edvel de fazer. O token de software n\u00e3o funciona sem conex\u00e3o com o sistema local do token de hardware. Sem ele, o programa RSA SecurID apresenta um erro. O token de software \u00e9 criado para um sistema espec\u00edfico e, ao ter acesso ao 'hardware' da v\u00edtima, \u00e9 poss\u00edvel obter um n\u00famero espec\u00edfico para ativar o token de software.<\/p>\n

\"Hackers<\/p>\n

Especialistas da Fox-IT afirmam que para ativar o token de software (furtado) n\u00e3o \u00e9 necess\u00e1rio ter acesso ao computador e ao token de hardware da v\u00edtima. Todo o conjunto de verifica\u00e7\u00e3o inicial \u00e9 realizado apenas na importa\u00e7\u00e3o do vetor inicial de gera\u00e7\u00e3o \u2014 um n\u00famero aleat\u00f3rio de 128 bits associado ao token espec\u00edfico (SecurID Token Seed<\/a><\/noindex>). Esse n\u00famero n\u00e3o est\u00e1 relacionado ao n\u00famero inicial, que ent\u00e3o se refere \u00e0 gera\u00e7\u00e3o do token de software real. Se a verifica\u00e7\u00e3o do SecurID Token Seed puder ser de alguma forma ignorada (patch), nada impedir\u00e1 a gera\u00e7\u00e3o de c\u00f3digos para a autentica\u00e7\u00e3o de dois fatores. A empresa Fox-IT afirma que a contornagem da verifica\u00e7\u00e3o pode ser realizada alterando apenas uma instru\u00e7\u00e3o. Ap\u00f3s isso, o sistema da v\u00edtima estar\u00e1 totalmente e legalmente aberto ao criminoso sem a necessidade de usar utilit\u00e1rios especiais e interfaces.<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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