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Compromised System by base64.inject.unclassed

DeltaFox2211

New Pleskian
Hello

My VPS wich runs Centos6 with Plesk 11 has some seroius problems.
My customers called me that the mails arent going out.
So i looked at the log files and found the following out.

http://pastebin.com/5WBi8DuZ

I found out that some mails can't get through because the server is black-listed.
I was shocked an immediently runned the linux malware detector.
He first scanned the /home directory and two bad software's was found.

base64.inject.unclassed
Code:
sed -i -e s/<?.*eval(base64_decode(.*?>// -e s/<?php.*eval(base64_decode(.*?>// -e s/eval(base64_decode([^;]*;//
gzbase64.inject.unclassed
Code:
sed -i -e s/// -e s///

This were the two things the scanner found.

I also figured out that the server is sending spam but in the mailquery there are only mails from my customers.
Usualy when a site is hacked the server i can trace it by looking for the id at the header wich user is spamming and then it's easy to find the bad script but in this case i can't do that because i can't see no spam..

Currently I am listed in the cbl and at the Hostkarma. At the hostkarma they also sended me this logs.
Code:
/ip-log/karma.log.10:black 146.255.61.53 site-management.at auth-bad X=mxbackup H=web03.site-management.at [146.255.61.53] HELO=[KASHEV.COM] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=D1=B5=E2=80=8E=D0=87=E2=80=8E=E1=BE=B0=E2=80=8E=C4=A0=E2=80=8E=E1=B9=9A=E2=80=8E=E1=BE=B0?=]

/ip-log/karma.log.10:virus 146.255.61.53 site-management.at NOTQUIT [S=12 - NQ BlList SubEncoded RecBL NoQuit] X=mxbackup H=web03.site-management.at [146.255.61.53] HELO=[KASHEV.COM] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=D1=B5=E2=80=8E=D0=87=E2=80=8E=E1=BE=B0=E2=80=8E=C4=A0=E2=80=8E=E1=B9=9A=E2

/ip-log/karma.log.10:black 146.255.61.53 site-management.at auth-bad X=euclid H=web03.site-management.at [146.255.61.53] HELO=[miravillacarecenter.com] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=D1=B7=E2=80=A8=E1=BF=99=E2=80=A8=C6=9B=E2=80=A8=C4=A1=E2=80=A8=C5=94=E2=80=A8=C6=9B?=]

/ip-log/karma.log.10:virus 146.255.61.53 site-management.at NOTQUIT [S=14 - HeloImper NQ BlList SubEncoded RecBL NoQuit] X=euclid H=web03.site-management.at [146.255.61.53] HELO=[miravillacarecenter.com] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=D1=B7=E2=80=A8=E1=BF=99

/ip-log/karma.log.18:black 146.255.61.53 site-management.at auth-bad X=pascal H=web03.site-management.at [146.255.61.53] HELO=[cabinc.org] F=[[email protected]] T=[[email protected]] S=[=?windows-1251?Q?=CD=F3_=EF=F0=EE=F1=F2=EE_=E4=E5=E9=F1=F2=E2=E8=F2=E5=EB=FC=ED=EE_=EF=F0=E8=EA=EE=EB=FC=ED=E0=FF_=F0__=E5__=EA__=EB__=E0__=EC__=E0?=]

/ip-log/karma.log.18:virus 146.255.61.53 site-management.at NOTQUIT [S=14 - HeloImper NQ BlList SubEncoded RecBL NoQuit] X=pascal H=web03.site-management.at [146.255.61.53] HELO=[cabinc.org] F=[[email protected]] T=[[email protected]] S=[=?windows-1251?Q?=CD=F3_=EF=F0=EE=F1=F2=EE_=E4=E5=E9=F1=F2=E2=E8=F2=E5=EB=FC=ED

/ip-log/karma.log.18:black 146.255.61.53 site-management.at auth-bad X=pascal H=web03.site-management.at [146.255.61.53] HELO=[kearney.net] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=E1=B9=BC=E2=80=8A=C3=8F=E2=80=8A=E1=BE=8B=E2=80=8A=E1=B8=A1=E2=80=8A=CA=80=E2=80=8A=E1=BE=8B?=]

/ip-log/karma.log.18:virus 146.255.61.53 site-management.at NOTQUIT [S=14 - HeloImper NQ BlList SubEncoded RecBL NoQuit] X=pascal H=web03.site-management.at [146.255.61.53] HELO=[kearney.net] F=[[email protected]] T=[[email protected]] S=[=?utf-8?Q?=E1=B9=BC=E2=80=8A=C3=8F=E2=80=8A=E1=BE=8B=E2=80=8A=E1=B8=A1=E2=

/ip-log/karma.log.18:black 146.255.61.53 site-management.at auth-bad X=euclid H=web03.site-management.at [146.255.61.53] HELO=[acronusa.com] F=[[email protected]] T=[[email protected]] S=[=?windows-1251?Q?=CD=F3_=EF=F0=EE=F1=F2=EE_=EE=F7=E5=ED=FC_=EA=E0=F7=E5=F1=F2=E2=E5=ED=ED=E0=FF_=F0_=E5_=EA_=EB_=E0_=EC_=EE_=F7_=EA_=E0?=]

/ip-log/karma.log.18:black 146.255.61.53 site-management.at auth-bad X=pascal H=web03.site-management.at [146.255.61.53] HELO=[cabinc.org] F=[[email protected]] T=[[email protected]] S=[=?windows-1251?Q?=CF=EE_=ED=E0=F1=F2=EE=FF=F9=E5=EC=F3_=EE=F5=F3=E5=ED=ED=E0=FF_=F0.=E5.=EA.=EB.=E0.=EC.=EE.=F7.=EA.=E0?=]

I hope you folks can help me..
 
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