NSSstub.exe is Norton Security Scan executable.

http://service1.symantec.com/SUPPOR…

You may have aquired it in two ways.

The first one is by installing Norton Security Scan software.

And the second one…

It comes packed with Adobe Shockwave v11.0.3.472
which was released on January 27, 2009.

Here is a screenshot from the installation process:
http://s5.tinypic.com/2m35kkj.jpg

So, if you didn’t unticked “Include Norton Security Scan”
you got it installed on your PC.

This tool won’t do you any harm since all it does is scans
the computer and identifies if there are existing viruses,
worms, spyware, unwanted adware or Trojans residing on it.

But if you want to remove it, you’ll have to do some work.
Removing this thing can really be a pain since it tends to
reinstall after you reboot you computer.

To completely remove it from your system you should do the following:

Uninstall Norton Security Scan via Add/Remove Programs:

    Start -> Control Panel
        -> Add/Remove Programs (Programs and Features in Vista)

Delete the NSSStub.exe from the scheduled tasks:

    Start -> Run -> type "compmgmt.msc /s"
        -> System Tools -> Task Scheduler -> Task Scheduler Library

Delete the NSSInstallation string from RunOnce registry key:

   Start -> Run -> type "regedit"

        If your system is 32-bit:
            HKEY_LOCAL_MACHINESOFTWARE
            MicrosoftWindowsCurrentVersionRunOnce

        If your system is 64-bit:
            HKEY_LOCAL_MACHINESOFTWAREWow6432Node
            MicrosoftWindowsCurrentVersionRunOnce

Regards

But does this “LAN acces from remote” mean someone is remotely accessing my stuff?
The log appears to say traffic was routed to 192.168.1.3 because it tried to access port 12046. To find out what was being accessed:
1) Find 192.168.1.3
2) Open a Command Prompt, as Administrator, if applicable
3) Run netstat -abn
4) Look for port 12046, and see what program has it open
5) Review what data this program has access to, and its function.

And is it possible for them to steal things like passwords etc. from this?
Possible? Yes. Probable? Doubt it.

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