Question

NtLmSsp and NTLM Security Problem on Windows 2003 Standard Edition

Asked by: karaji

Hello
I Use Windows 2003 Standard Edition , today my friend Password in my system (we use one system) changed I find this audit in my system audit:

Event Type:      Success Audit
Event Source:      Security
Event Category:      Logon/Logoff
Event ID:      540
Date:            5/2/2004
Time:            9:56:27 AM
User:            NT AUTHORITY\ANONYMOUS LOGON
Computer:      NS9
Description:
Successful Network Logon:
       User Name:      
       Domain:            
       Logon ID:            (0x0,0x1AE5F4)
       Logon Type:      3
       Logon Process:      NtLmSsp
       Authentication Package:      NTLM
       Workstation Name:      SRV001
       Logon GUID:      -
       Caller User Name:      -
       Caller Domain:      -
       Caller Logon ID:      -
       Caller Process ID: -
       Transited Services: -
       Source Network Address:      xxx.xxx.xxx.xxx
       Source Port:      0
--------------------
Event Type:      Success Audit
Event Source:      Security
Event Category:      Logon/Logoff
Event ID:      538
Date:            5/2/2004
Time:            9:56:17 AM
User:            NT AUTHORITY\ANONYMOUS LOGON
Computer:      NS9
Description:
User Logoff:
       User Name:      ANONYMOUS LOGON
       Domain:            NT AUTHORITY
       Logon ID:            (0x0,0x234913)
       Logon Type:      3
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
--------------------
Event Type:      Success Audit
Event Source:      Security
Event Category:      Account Management
Event ID:      627
Date:            5/2/2004
Time:            10:12:40 AM
User:            NT AUTHORITY\ANONYMOUS LOGON
Computer:      NS9
Description:
Change Password Attempt:
       Target Account Name:      Admin123
       Target Domain:      NS9
       Target Account ID:      NS9\Admin123
       Caller User Name:      -
       Caller Domain:      -
       Caller Logon ID:      (0x0,0x3E6)
       Privileges:      -
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


what is problem that Anonymous User can change Administrator password?!!!

- karaji

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Asked On
2004-05-02 at 14:18:46ID20975331
Tags

ntlmssp

,

event

,

2003

,

windows

Topic

Windows Network Security

Participating Experts
2
Points
250
Comments
5

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Answers

 

by: VRAGHAVANSPosted on 2004-05-02 at 21:26:41ID: 10974615

Nothing to worry
Check this URL

http://is-it-true.org/nt/atips/atips155.shtml
Venkat

 

by: trywaredkPosted on 2004-05-03 at 05:06:05ID: 10976711

Well - maybe there is something to worry about !

Are your friends computername NS9 ???

If not, then it could be an unknown user/computer that's doing a real logon
http://www.eventid.net/display.asp?eventid=540&eventno=9&source=Security&phase=1

If so, you should protect yourself from keyloggers ...

Cleaning your computer  - and protecting it in the future -  can't be answered with one issue.

As you can see in my url below there are at least 7 different issues, where you should decide 1 of each, or else you does'nt protect your computer at all.

The reason is, that the many different programs not always protects against each other, and each of them does'nt protect equally.

It's very important, that you study all of these issues in my knowledgebase (some of them are freeware):
http://www.tryware.dk/English/Knowledgebase/HowToProtectYourComputer.html

BTW: I'm using the Trend Micro virus-suite, and SoftScan , and haven't got any of my servers or computers infected since 1999.

Many Regards
Jorgen Malmgren
IT-Supervisor
Denmark

:o) Your brain is like a parachute. It works best when it's open

20120131-EE-VQP-002

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