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Posted by Steven L Umbach on June 8, 2006, 12:34 pm
Please log in for more thread options It is hard to say if it is enough. It depends on your tolerance for risk. If
it was my server I would rebuild the operating system from scratch. The big
question is how did this happen in the first place and have you taken steps
to minimize that from happening again. Hopefully the server is not used to
browse the internet, open email, etc. Make sure you check the users on the
computer and the membership of privileged groups and do so on a regular
basis and carefully monitor the security logs. If it was an ftp server it
sounds like there is no firewall being used or it is improperly
onfigured. --- Steve
> Well got my fitrst attack last night, someone put a ftp server on my win2k
> server box.
> I removed the inherited permissions on the dir he created
> I changed all my passwords and stopped remote access..
> Is this enough ?
>
> I have serviced packed and updated this macnine to death...
>
>
>
>> Windows Server 2003
>>
>>
>> I know how they are getting in to my system, I just don't know HOW!!
>>
>> I have several events in my Security Log that shows ip address from
>> Queensland Australia, Amsterdam, etc. that have actually logged in. I
>> know how they are accessing my system and that is through Remote Desktop.
>> I just don't know HOW they are doing it because all passwords for my
>> users (which are 2... Administrator and Me) are about 12 characters long
>> using numbers, letters, and even characters. I know that by leaving RD
>> port open, I am vulnerable to attacks like this, but I frequently access
>> my server from remote areas. I have a linksys router between my cable
>> modem and entire network, but it is irritating to have to enable the
>> port, do my business, then disable the port all through the web interface
>> of my router.
>>
>> My issue now is I cannot delete user "lovy$" and when I attempt, I get
>> this error.
>>
>> "The following error occurred while attempting to delete the user lovy:
>> The user does not belong to this group."
>>
>> I'm logged in under Admin and yet I cannot delete the user?? What the
>> f***?
>>
>> Here are several of the logs. The top half is as recent as 5-30, the
>> bottom half is last month from a DIFFERENT user. Can anyone determine
>> HOW they are getting my passwords or how they are accessing my machine
>> allowing them to create user names?
>>
>> Logon attempt by: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
>> Logon account: lovy$
>> Source Workstation: KINGSERVER2000
>> Error Code: 0x0
>>
>>
>> Logon attempt using explicit credentials:
>> Logged on user:
>> User Name: KINGSERVER2000$
>> Domain: KING
>> Logon ID: (0x0,0x3E7)
>> Logon GUID: -
>> User whose credentials were used:
>> Target User Name: lovy$
>> Target Domain: KINGSERVER2000
>> Target Logon GUID: -
>>
>> Target Server Name: localhost
>> Target Server Info: localhost
>> Caller Process ID: 4016
>> Source Network Address: 221.221.221.37
>> Source Port: 65033
>>
>> Successful Logon:
>> User Name: lovy$
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0x16B29C4)
>> Logon Type: 10
>> Logon Process: User32
>> Authentication Package: Negotiate
>> Workstation Name: KINGSERVER2000
>> Logon GUID: -
>> Caller User Name: KINGSERVER2000$
>> Caller Domain: KING
>> Caller Logon ID: (0x0,0x3E7)
>> Caller Process ID: 4016
>> Transited Services: -
>> Source Network Address: 221.221.221.37
>> Source Port: 65033
>>
>>
>> Special privileges assigned to new logon:
>> User Name: lovy$
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0x16B29C4)
>> Privileges: SeTcbPrivilege
>> SeAssignPrimaryTokenPrivilege
>> SeSecurityPrivilege
>> SeBackupPrivilege
>> SeRestorePrivilege
>> SeTakeOwnershipPrivilege
>> SeDebugPrivilege
>> SeSystemEnvironmentPrivilege
>> SeLoadDriverPrivilege
>> SeImpersonatePrivilege
>>
>>
>> User Logoff:
>> User Name: lovy$
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0x16B29C4)
>> Logon Type: 10
>>
>>
>> Session reconnected to winstation:
>> User Name: Administrator
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0xCF9341)
>> Session Name: RDP-Tcp#15
>> Client Name: SL
>> Client Address: 221.221.221.37
>>
>>
>> User initiated logoff:
>> User Name: Administrator
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0xcf9341)
>>
>>
>>
>>
>>
>> ******************************************
>> Logon attempt by: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
>> Logon account: IUSR_KINGSERVER2000
>> Source Workstation: KINGSERVER2000
>> Error Code: 0x0
>>
>>
>> Successful Network Logon:
>> User Name: IUSR_KINGSERVER2000
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0x16CD7BD)
>> Logon Type: 8
>> Logon Process: Advapi
>> Authentication Package: Negotiate
>> Workstation Name: KINGSERVER2000
>> Logon GUID: -
>> Caller User Name: NETWORK SERVICE
>> Caller Domain: NT AUTHORITY
>> Caller Logon ID: (0x0,0x3E4)
>> Caller Process ID: 2936
>> Transited Services: -
>> Source Network Address: -
>> Source Port: -
>>
>>
>>
>> **********************************************
>> Logon attempt using explicit credentials:
>> Logged on user:
>> User Name: KINGSERVER2000$
>> Domain: KING
>> Logon ID: (0x0,0x3E7)
>> Logon GUID: -
>> User whose credentials were used:
>> Target User Name: mike
>> Target Domain: KINGSERVER2000
>> Target Logon GUID: -
>>
>> Target Server Name: localhost
>> Target Server Info: localhost
>> Caller Process ID: 608
>> Source Network Address: 221.221.218.61
>> Source Port: 61953
>>
>>
>> Successful Logon:
>> User Name: mike
>> Domain: KINGSERVER2000
>> Logon ID: (0x0,0x2FA0BE)
>> Logon Type: 7
>> Logon Process: User32
>> Authentication Package: Negotiate
>> Workstation Name: KINGSERVER2000
>> Logon GUID: -
>> Caller User Name: KINGSERVER2000$
>> Caller Domain: KING
>> Caller Logon ID: (0x0,0x3E7)
>> Caller Process ID: 608
>> Transited Services: -
>> Source Network Address: 221.221.218.61
>> Source Port: 61953
>>
>>
>>
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