outbound svchost request

Discussion in 'Software' started by LMHmedchem, May 31, 2012.

  1. LMHmedchem

    LMHmedchem Private E-2

    Hello again,

    Since booting up this morning, I have had ~250 attempted outbound connections from svchost.

    svchost.exe port 427 to 92.242.144.50 port 427 UDP
    svchost.exe port 1648 to 92.242.144.50 port 139 TCP

    My understanding of svchost is that it does nothing on its own but is tasked by some service or app. My basic question is what would be attempting to make such a connection and why have I never seen it before today. Svchost sometimes does local multicast to look for my HP printer (224.0.1.60), and to UPnP(239.255.255.250), and also sometimes to DNS. Those are pretty innocuous, thought I don't always understand what their purpose is.

    This is new, and since one is port 139, that is a bit more concerning. These have come regularly all day, so I'm not sure what is prompting them.

    Here is my Tasklist output for svchost,
    Code:
    Image Name:   svchost.exe
    PID:          1292
    Services:     DcomLaunch
                  TermService
    
    Image Name:   svchost.exe
    PID:          1360
    Services:     RpcSs
    
    Image Name:   svchost.exe
    PID:          1540
    Services:     AudioSrv
                  Browser
                  CryptSvc
                  Dhcp
                  EventSystem
                  LanmanServer
                  lanmanworkstation
                  Netman
                  Nla
                  Schedule
                  SENS
                  SharedAccess
                  ShellHWDetection
                  Themes
                  W32Time
                  winmgmt
    
    Image Name:   svchost.exe
    PID:          1936
    Services:     hpqcxs08
                  hpqddsvc
    
    Image Name:   svchost.exe
    PID:          1948
    Services:     HPSLPSVC
    
    Image Name:   svchost.exe
    PID:          2020
    Services:     Net Driver HPZ12
    
    Image Name:   svchost.exe
    PID:          1496
    Services:     Pml Driver HPZ12
    
    Image Name:   svchost.exe
    PID:          1612
    Services:     stisvc
    
    Image Name:   svchost.exe
    PID:          1440
    Services:     SSDPSRV
    
    I guess I would like to know if this kind of traffic is associated with anything I should be concerned with and also some general information about what is going on under the hood here. Can anyone provide any insight as to why svchost is trying to connect the the WAN and what app or service may be prompting it. The comodo logs don't say which instance of svchost is trying to connect, unless I'm not reading them right.

    LMHmedchem
     
  2. unimatrix001

    unimatrix001 Private E-2

  3. LMHmedchem

    LMHmedchem Private E-2

    Thanks for doing that. I'm not sure why svcohst would be trying to connect to that domain. It seems as if you may be re-directed to that site if your browser tries to connect to a site at an invalid domain. Why would svchost be making that connection unless it was first trying to connect elsewhere and got redirected? It would be helpful to know what program was tasking svchost to make this connection.

    I looked in the event log to see if there were any errors that might provide some insight, but there are not any.

    LMHmedchem
     
  4. LMHmedchem

    LMHmedchem Private E-2

    Just to update, I just had requests for "system" to connect to the same two IP/port combinations.

    system port 427 to 92.242.144.50 port 427 UDP
    system port 1648 to 92.242.144.50 port 139 TCP

    and also,

    system to 92.242.144.50 port 445 TCP

    Since port 445 is netbios, I have disabled NetBIOS over TCP/IP, as I probably should have done anyway.

    This is a bit disturbing since port 445 and 139 are associated with file-sharing protocols.

    LMHmedchem
     

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