RE: Probable Trojan.

From: Mark E. Donaldson (markee_at_bandwidthco.com)
Date: 10/29/03

  • Next message: Russell Fulton: "Re: New Trojan" 
    To: "Gene" <flyersfanindc@yahoo.com>, <incidents@securityfocus.com>
Date: Tue, 28 Oct 2003 21:33:14 -0800

    This is a normal abnormality. It is explained in the MSDN article linked
    here: http://msdn.microsoft.com/msdnmag/issues/02/06/debug/default.aspx

    Here is a quote from the article:

    "the path names returned by GetModuleFilenameEx or the TOOLHELP32 module
    functions are very strange; they don't follow the Win32 standard. For
    example, smss is retrieved as "\SystemRoot\System32\smss.exe"; "\SystemRoot
    must be replaced by the actual name of the Windows folder. For winlogon, you
    get "\??\C:\WINNT\system32\winlogon.exe," which should be translated into
    "C:\WINNT\system32\winlogon.exe." The \??\ prefix might be a leftover from
    the Windows NT namespace root, essential in kernel mode, even though it is
    rarely used at the Win32 programming level."

    -----Original Message-----
    From: Gene [mailto:flyersfanindc@yahoo.com]
    Sent: Monday, October 27, 2003 11:50 AM
    To: incidents@securityfocus.com
    Subject: Probable Trojan.

    Have a buddy complaining about his AOL account password being stolen every
    time he logs onto AOL from his PC at work. I talked him through doing an
    fport on his box and he sent me the results:

    Pid Process Port Proto Path
    8 System -> 1097 TCP
    8 System -> 139 TCP
    8 System -> 445 TCP
    1916 aolwbspd -> 11523 TCP C:\Program Files\America Online
    9.0\aolwbsp
    d.exe
    676 OUTLOOK -> 1125 TCP C:\Program Files\Microsoft
    Office\Office10\
    OUTLOOK.EXE
    676 OUTLOOK -> 1129 TCP C:\Program Files\Microsoft
    Office\Office10\
    OUTLOOK.EXE
    856 MSTask -> 1051 TCP C:\WINNT\system32\MSTask.exe
    988 svchost -> 1132 TCP C:\WINNT\system32\svchost.exe
    988 svchost -> 1134 TCP C:\WINNT\system32\svchost.exe
    988 svchost -> 1139 TCP C:\WINNT\system32\svchost.exe
    452 svchost -> 135 TCP C:\WINNT\system32\svchost.exe

    8 System -> 137 UDP
    8 System -> 138 UDP
    8 System -> 445 UDP
    1820 waol -> 1849 UDP C:\Program Files\America Online
    9.0\waol.ex
    e
    1688 IEXPLORE -> 1191 UDP C:\Program Files\Internet
    Explorer\IEXPLORE
    .EXE
    1856 IEXPLORE -> 1784 UDP C:\Program Files\Internet
    Explorer\IEXPLORE
    .EXE
    676 OUTLOOK -> 1126 UDP C:\Program Files\Microsoft
    Office\Office10\
    OUTLOOK.EXE
    676 OUTLOOK -> 1127 UDP C:\Program Files\Microsoft
    Office\Office10\
    OUTLOOK.EXE
    676 OUTLOOK -> 1182 UDP C:\Program Files\Microsoft
    Office\Office10\
    OUTLOOK.EXE
    800 rtvscan -> 2967 UDP C:\Program Files\NavNT\rtvscan.exe
    268 lsass -> 500 UDP C:\WINNT\system32\lsass.exe
    228 winlogon -> 1053 UDP \??\C:\WINNT\system32\winlogon.exe

    I'm really concerned with the last one:

    228 winlogon -> 1053 UDP \??\C:\WINNT\system32\winlogon.exe

    I've found some things on the net that say it's legit, I've found others
    that say it's indicative of a backdoor. I ran fport on my box and did not
    have any entries like that. Does anyone have any information on this? Are
    there other entries that attract anyone else's attention?

    Your help is appreciated.

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    ---------------------------------------------------------------------------
    Network with over 10,000 of the brightest minds in information security
    at the largest, most highly-anticipated industry event of the year.
    Don't miss RSA Conference 2004! Choose from over 200 class sessions and
    see demos from more than 250 industry vendors. If your job touches
    security, you need to be here. Learn more or register at
    http://www.securityfocus.com/sponsor/RSA_incidents_031023
    and use priority code SF4.
    ----------------------------------------------------------------------------

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