commit 7e06f846ae35c5eb3de6a4181fd2ade019fb796a Author: Gabor Gyorvari Date: Thu May 5 07:35:23 2016 +0200 first commit diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..9c8f3ea --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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Only the first 32 characters are used, rest of the line ignored so feel free to leave a comment. + +Resources +--------- + +* [PHPScanner](https://github.com/PHPScannr/phpFUS) +* [PMF - PHP Malware Finder](https://github.com/nbs-system/php-malware-finder) +* [check regexp online](http://www.phpliveregex.com) +* [malware samples 1](https://github.com/nbs-system/php-malware-finder/tree/master/php-malware-finder/samples) +* [malware samples 2](https://github.com/r4v/php-exploits) +* [malware samples 3](https://github.com/nikicat/web-malware-collection) + +Licensing +--------- + +PHP malware scanner is [licensed](https://github.com/scr34m/php-malware-scanner/blob/master/LICENSE.txt) under the GNU General Public License v3. diff --git a/scan.php b/scan.php new file mode 100644 index 0000000..d57af83 --- /dev/null +++ b/scan.php @@ -0,0 +1,248 @@ + 0, + 'files_scanned' => 0, + 'files_infected' => 0, + ); + + public function __construct() + { + $options = getopt('hd:e::', array('hide-ok', 'hide-whitelist')); + if (isset($options['h'])) { + $this->showHelp(); + } else { + if (isset($options['e'])) { + $ext = $options['e']; + if ($ext[0] != '.') { + $ext = '.' . $ext; + } + $this->extension = $ext; + } + if (isset($options['hide-ok'])) { + $this->flagHideOk = true; + } + if (isset($options['hide-whitelist'])) { + $this->flagHideWhitelist = true; + } + if (isset($options['d'])) { + $this->run($options['d']); + } else { + $this->out(MalwareScanner::ANSI_RED, 'ER', 'No directory specified'); + $this->showHelp(); + } + } + } + + public function run($dir) + { + $dir = rtrim($dir, '/'); + if (!is_dir($dir)) { + $this->out(self::ANSI_RED, 'ER', 'Specified path is not a directory: ' . $dir); + exit(-1); + } + $start = time(); + $this->loadWhitelist(); + $this->process($dir . '/'); + $this->report($start, $dir . '/'); + } + + private function loadWhitelist() + { + if (!is_file(__DIR__ . '/whitelist.txt')) { + return; + } + $fp = fopen(__DIR__ . '/whitelist.txt', 'r'); + while (!feof($fp)) { + $line = fgets($fp); + $this->whitelist[] = substr($line, 0, 32); + } + } + + private function inWhitelist($hash) + { + return in_array($hash, $this->whitelist); + } + + private function process($dir) + { + $dh = opendir($dir); + if (!$dh) { + return; + } + $this->stat['directories']++; + while (($file = readdir($dh)) !== false) { + if ($file == '.' || $file == '..') { + continue; + } + if (is_dir($dir . $file)) { + $this->process($dir . $file . '/'); + } elseif (is_file($dir . $file)) { + $ext = substr($file, strrpos($file, '.')); + if ($ext == $this->extension) { + $this->scan($dir . $file); + } + } + } + closedir($dh); + } + + private function report($start, $dir) + { + $end = time(); + echo 'Start time: ' . strftime('%Y-%m-%d %H:%M:%S', $start) . PHP_EOL; + echo 'End time: ' . strftime('%Y-%m-%d %H:%M:%S', $end) . PHP_EOL; + echo 'Total execution time: ' . ($end - $start) . PHP_EOL; + echo 'Base directory: ' . $dir . PHP_EOL; + echo 'Total directories scanned: ' . $this->stat['directories'] . PHP_EOL; + echo 'Total files scanned: ' . $this->stat['files_scanned'] . PHP_EOL; + echo 'Total malware identified: ' . $this->stat['files_infected'] . PHP_EOL; + } + + private function scan($path) + { + $this->stat['files_scanned']++; + + $fileContent = file_get_contents($path); + $found = false; + + // check against simple text matches + $patterns = array( + 'uname -a', + '/etc/shadow', + '/etc/passwd', + 'WSOstripslashes', + 'PD9waHA', // 0) { + $found = true; + break; + } + } + + // check against regexp patterns + if (!$found) { + $patterns = array( + 'eval\/\*[a-z0-9]+\*\/', + // eval/*aw3*/ + 'eval\([a-z0-9]{4,}\(\$[a-z0-9]{4,}, \$[0-9a-z]{4,}\)\);', + // eval(v5JONDD($v5EKGVD, $vX3Z3DE)); + '(chr\(\d+\)\.){4,}', + // chr(22).chr(33).chr(22).chr(22) + '(\$[a-z0-9]{3,}\[\d+\]\.){4,}', + // $saz98[5].$saz98[2].$saz98[1].$saz98[3].$saz98[5] + 'chr\(\d+\)\.""\.""\.""\.""\.""', + // chr(88)."".""."".""."". + '\$GLOBALS\[\$GLOBALS[\'[a-z0-9]{4,}\'\]\[\d+\]\.\$GLOBALS\[\'[a-z-0-9]{4,}\'\]\[\d+\].', + // $GLOBALS[$GLOBALS['u101c7'][77].$GLOBALS['u101c7'][47]. + '\$GLOBALS\[\'[a-z0-9]{5,}\'\] = \$[a-z]+\d+\[\d+\]\.\$[a-z]+\d+\[\d+\]\.\$[a-z]+\d+\[\d+\]\.\$[a-z]+\d+\[\d+\]\.', + // $GLOBALS['qjyxw29'] = $z26[1].$z26[30].$z26[2]. + 'eval\([a-z0-9_]+\(base64_decode\(', + // eval(xxtea_decrypt(base64_decode( + '\$[a-z]{3,}=\$[a-z]{3,}\("",\$[a-z]{3,}\);\$[a-z]{3,}\(\);', + // $ewn=$ner("",$iqkpi);$ewn(); + '{\s*eval\s*\(\s*\$', + // {eval($ + ); + foreach ($patterns as $toSearch) { + if (preg_match('/' . $toSearch . '/is', $fileContent)) { + $found = true; + break; + } + } + } + + if (!$found) { + if (!$this->flagHideOk) { + $this->out(self::ANSI_GREEN, 'OK', $path); + } + return false; + } + + // file hash is on whithelist hash then skip + $hash = md5($fileContent); + if ($found && $this->inWhitelist($hash)) { + if (!$this->flagHideWhitelist) { + $this->out(self::ANSI_YELLOW, 'WL', $path); + } + return false; + } + + if ($found) { + $this->stat['files_infected']++; + $this->out(self::ANSI_RED, 'ER', $path . ' -> ' . $toSearch . ' ' . $hash); + } + + return true; + } + + private function out($color, $serv, $text) + { + echo $color . ' ' . $serv . ' ' . self::ANSI_OFF . $text . PHP_EOL; + } + + private function showHelp() + { + echo 'Usage scan.php -d [-e=.php] [--hide-ok] [--hide-whitelist]' . PHP_EOL; + echo ' -d Directory for searching' . PHP_EOL; + echo ' -e=.php Extension' . PHP_EOL; + echo ' --hide-ok Hide OK aka not infected messages' . PHP_EOL; + echo ' --hide-whitelist Hide whitelisted messages' . PHP_EOL; + } + +} + +new MalwareScanner(); diff --git a/whitelist.txt b/whitelist.txt new file mode 100644 index 0000000..5717bda --- /dev/null +++ b/whitelist.txt @@ -0,0 +1,30 @@ +808a427ba07643d4deaf4dfdcf418e6d wp-includes/class-json.php +60468ee875f1a005008edaa573cf573b wp-includes/functions.php +67a0f4e33e2e3f8e4d6011e8bfdbbc3b mod_templatechooser.php +a7e015a2085227ad95f5f5a6297452ee admin.trash.html.php +e2723c200270f2effd67b4781c520fde admin.events.html.php +8edd98ba2bf1ef851798fcaa0e6b297c com_joomlaxplorer/libraries/Archive/Writer/Zip.php +7ff5a64c2f22419308bcbc22f72eae96 com_joomlaxplorer/libraries/Archive/Predicate/Custom.php +a7a44b247630fee8d7fc20249c72e26d PEAR.php +5ab95e30525ab196c45f7dbfc1625083 com_joomlaxplorer/libraries/lib_zip.php +9cb0169a8305b362fe9a13f4ea08f1f1 admin.menumanager.html.php +123de131caa0f2b9570f6720e6710d04 geshi/php.php +0fd1b837fed4fcaedf3ae469fa4a0781 pcl/zip.lib.php +6a8d1fe91a1f34a7533ffe3a98145b9f pcl/pclzip.lib.php +17226e93e2b740844ce1ccb71da5f728 domit/xml_domit_xpath.php +ff5377c902545fbde188dbd49947eb9c class.ezpdf.php +a93613b6acf4cc90ce0b47298f564211 patTemplate/patTemplate/Modifier/Expression.php +f43cb20a9f9b629c24c835bf1f9851a6 PEAR/PEAR.php +0a25de138e3db72c29a56e97c98820fd mod_naplement.php +bf18aba9b916a5cc48ae8790793419bc wp-content/plugins/contact-form-7-to-database-extension/CFDBFilterParser.php +3db2e647a23035f1c3ddef601b5dae18 wp-content/plugins/wp-filebase/classes/Item.php +d539f65804806585a7ed470f46465333 wp-content/plugins/wp-filebase/classes/TplLib.php +a6cce6be28fd8c451e54280aaa88bfcc wp-content/plugins/nextgen-gallery/products/photocrati_nextgen/modules/datamapper/package.module.datamapper.php +6d9afe2a2e7ecf99ba71ef327989c0a1 wp-content/plugins/nextgen-gallery/pope/lib/class.extensibleobject.php +834d22f8b68a2c5c01866a43eb24efc4 wp-admin/includes/class-pclzip.php +16312a9542e3f4fc39dcbde1ac5dcb33 wp-includes/class-json.php +73e90cd5d7580cba2f599d39f9351865 wp-includes/functions.php +e9cf6421fe6afc7b724bf0372697e1c4 wp-includes/formatting.php -> (chr\(\d+\)\.){4,} +eb034c991aee49aa232f6d50372f8b4a wp-content/themes/enfold/framework/php/function-set-avia-frontend.php -> (\$[a-z0-9]{3,}\[\d+\]\.){4,} +5311094f43c7252b22c71fd4dee43f03 wp-includes/formatting.php -> (chr\(\d+\)\.){4,} +d2865536f339150ee54a81811ca80128 wp-includes/rss.php -> (\$[a-z0-9]{3,}\[\d+\]\.){4,}