Port 109 Mystery

From: Douglas Brown (dugbrownat_private)
Date: Wed Mar 12 2003 - 08:54:30 PST

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    Got a server with port 109 open, requesting a password.  Pop-2 is not 
    running, various trojan and av cleaning tools have been run, various 
    registry keys have been checked manually.  Fport reports a PID of 220 - 
    running PSKill on that PID results in a reboot.  Fport seems to be 
    unsure of the path to the *.exe.  The winlogon.exe has been replaced 
    with a known good copy.  Various tests included below.  Has anyone else 
    seen anything along these lines or have any advice to offer?
    
    Starting nmap V. 3.00 ( www.insecure.org/nmap/ )
    Interesting ports on (*.*.*.*):
    (The 65522 ports scanned but not shown below are in state: closed)
    Port       State       Service
    21/tcp     open        ftp
    80/tcp     open        http
    109/tcp    open        pop-2
    135/tcp    open        loc-srv
    139/tcp    open        netbios-ssn
    443/tcp    open        https
    445/tcp    open        microsoft-ds
    1040/tcp   open        unknown
    1051/tcp   open        unknown
    1052/tcp   open        unknown
    1433/tcp   open        ms-sql-s
    3306/tcp   open        mysql
    3389/tcp   open        ms-term-serv
    Remote operating system guess: Windows 2000/XP/ME
    
    # nc *.*.*.* 109
    Password:
    
    FPort v1.33 - TCP/IP Process to Port Mapper
    Copyright 2000 by Foundstone, Inc.
    http://www.foundstone.com
    Pid   Process            Port  Proto Path
    220   winlogon       ->  109   TCP   \??\C:\WINNT\system32\winlogon.exe
    
    thanks,
    -Doug
    -- 
    Douglas Brown, CISSP
    Manager of Security Resources
    UNC Chapel Hill
    Abernethy 105
    "what can Brown do for you?"
          	
    
    
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