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What is SMSS.exe

Posted on 2006-07-07
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Last Modified: 2012-08-13

My system has
                                  Location
SMSS.exe                   c:\WINNT\system32
smss.exe                    C:\WINNT\$NtServicePackUninstall$
smss.exe                    C:\WINNT\ServicePackFiles\i386

Is SMSS.exe is a virus? If so, how to remove it.
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Question by:Mateen
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8 Comments
 
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bastibartel earned 500 total points
ID: 17057912
Hi Mateen,

http://www.liutilities.com/products/wintaskspro/processlibrary/smss/

Description:
smss.exe is a process which is a part of the Microsoft Windows Operating System. It is called the Session Manager SubSystem and is responsible for handling sessions on your system. This program is important for the stable and secure running of your computer and should not be terminated.



Cheers!
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by:bastibartel
ID: 17057932
Mateen,

..continued ;-)

Note:
smss.exe could also be a process which is registered as a trojan. This Trojan allows attackers to access your computer from remote locations, stealing passwords, Internet banking and personal data. It could also be a registered security risk and should be removed immediately.

Determining whether this process is a virus or a legitimate Windows process depends on the directory location it executes or runs from in WinTasks.

My Comment (bastibartel)
The windows service is in C:\Windows\System32
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Author Comment

by:Mateen
ID: 17058004
Hi
bastibartel

Is there any difference between SMSS.exe and smss.exe

<<Determining whether this process is a virus or a legitimate Windows process depends on the directory location it executes or runs from in WinTasks.>>

Could not understand this line.
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by:bastibartel
ID: 17058013
No,  Windows OS  does not distinguish upper and lower case filenames
Sebastian
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Expert Comment

by:bastibartel
ID: 17058038
Sry,

If SMSS.exe is in  C:/Window/System32/SMSS.exe
it is the correct Microsoft Windows file

on Windows 2000 it could be also in
C:/WINNT/System32/SMSS.exe

If it is somewhere else (seach for it on your Harddrive)
It is probably a virus.

Was that more undertandable ?
Sebastian


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Author Comment

by:Mateen
ID: 17058089
<<If it is somewhere else (seach for it on your Harddrive)>>

I have searched and stated in my question.

If it is ok, alright, otherwsie , do please post back.
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Expert Comment

by:bastibartel
ID: 17058108
You are right, I missed that - it's all good then.
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Expert Comment

by:bastibartel
ID: 17058165
To be 100% certain, do the following:

1. check the creation date of  c:\WINNT\system32\SMSS.exe  
    (it should be exactly as old as many other files in that folder)

2. compare the exact file size (Properties) of SMSS.exe in both
    C:\WINNT\system32\SMSS.exe
    C:\WINNT\ServicePackFiles\i386
    (they should be identical)

Cheers,
Sebastian
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