Cant logon to WindowsXP, deleted some registry keys

Discussion in 'Tech' started by chloec42, Sep 13, 2010.

  1. chloec42

    chloec42 New Member

    Likes Received:
    Jul 4, 2010
    I use Malwarebytes Antimalware regularly and havent had an infection found in about a year.
    Yesterday i scanned after about a month and i saw 12 infections !

    MBAM said it could not clean a few infections:

    Malwarebytes' Anti-Malware 1.44
    Database version: 3510
    Windows 5.1.2600 Service Pack 2
    Internet Explorer Unknown

    9/11/2010 11:19:49 PM
    mbam-log-2010-09-11 (23-19-49).txt

    Scan type: Quick Scan
    Objects scanned: 94917
    Time elapsed: 2 minute(s), 49 second(s)

    Memory Processes Infected: 0
    Memory Modules Infected: 0
    Registry Keys Infected: 2
    Registry Values Infected: 2
    Registry Data Items Infected: 3
    Folders Infected: 1
    Files Infected: 4

    Memory Processes Infected:
    (No malicious items detected)

    Memory Modules Infected:
    (No malicious items detected)

    Registry Keys Infected:
    HKEY_USERS\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{43bf8cd1-c5d5-2230-7bb2-98f22c2b7dc6} (Backdoor.Bot) -> Quarantined and deleted successfully.
    HKEY_USERS\S-1-5-18\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\{43bf8cd1-c5d5-2230-7bb2-98f22c2b7dc6} (Backdoor.Bot) -> Quarantined and deleted successfully.

    Registry Values Infected:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mp3_audio_codec (Spyware.Zbot) -> Quarantined and deleted successfully.
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Network\uid (Malware.Trace) -> Quarantined and deleted successfully.

    Registry Data Items Infected:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Spyware.Zbot) -> Data: c:\windows\system32\sdra64.exe -> Delete on reboot.
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Spyware.Zbot) -> Data: system32\sdra64.exe -> Delete on reboot.
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Hijack.Userinit) -> Bad: (C:\WINDOWS\system32\userinit.exe,C:\WINDOWS\system32\sdra64.exe,) Good: (Userinit.exe) -> Quarantined and deleted successfully.

    Folders Infected:
    C:\WINDOWS\system32\lowsec ( -> Delete on reboot.

    Files Infected:
    C:\WINDOWS\system32\lowsec\local.ds ( -> Delete on reboot.
    C:\WINDOWS\system32\lowsec\user.ds ( -> Delete on reboot.
    C:\WINDOWS\system32\lowsec\user.ds.lll ( -> Quarantined and deleted successfully.
    C:\WINDOWS\system32\sdra64.exe (Spyware.Zbot) -> Delete on reboot.

    So i thought of manually removing the infected Registry keys. (Something i've done many times before)

    While I was at
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\
    I saw a key named 'Special Accounts', it looked fishy to my paranoid eyes. Had some 'strange' values in it, None corresponding to my Username (Administrator) or Guest. 3 were somewhat random letters with a ~, and one was ' search assistant'. Looked like malware remains of some kind, so, i deleted them all.

    After that i rebooted, the welcome screen showed up (usually straightaway shows me desktop since there is just one user 'Administrator') with the only user 'Administrator'. When i click it, it shows 'loading your personal settings' for a second. Then it reads 'saving your settings' and stays at the logon screen. Repeated it for 10 times. Restarted and repeated. Shut Down and repeated. Always same result.

    Then i tried the 'Last Know good configuration' in statup options. Still same result.
    Tried 'Safe Mode' starts loading then breaks at 'unable to load NTFS.dll'
    'Safe mode with networking' same logon screen and same one second login and return to logon screen.

    I dont know how to login. Can someone please help. Is there a way to remotely add the keys back to my registry. Or some way to correct this problem?

    Thanks and Regards

  2. Ravr

    Ravr _______________

    Likes Received:
    Dec 26, 2005
    The Netherlands
    not sure if you can re-enter registry keys with it. but the only way to access your computer is to boot a tool-disc like Hirens boot cd and use some of the repair programs.

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