Windows Legacy OS forum

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lsass.exe connecting to the internet

by sbga01 / February 4, 2008 7:26 PM PST

Hello, for some reason my firewall program detected lsass.exe connecting to the internet. I did a whois of the IP and it was from beijing. I did a scan with nod32 and kaspersky and they found nothing. Do you think I have a virus?

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Possibly not
by MarkFlax Forum moderator / February 5, 2008 1:51 AM PST

There is an lsass.exe that is a genuine system process, but only if it is the one that resides in the C\Windows\System32 directory.

If the one your firewall picked up is located elsewhere then you may have a virus.

Or, if that spelling is incorrect and the process picked up by your firewall is lsasss.exe, then that could mean a virus.

The guidance at AnswersThatWork here; http://www.answersthatwork.com/Tasklist_pages/tasklist_l.htm may help.

Mak

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lsass
by sbga01 / February 5, 2008 5:16 AM PST
In reply to: Possibly not

ok the lsass.exe is located in the legitimate directory and has the correct filename. I wonder why it tries to connect?

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Which firewall?
by MarkFlax Forum moderator / February 5, 2008 6:23 PM PST
In reply to: lsass

It's not listed in my firewall, ZoneAlarm, but that doesn't mean too much. lsass.exe is a process that handles a lot of dll's, such as w32time.dll, (to check the OS time), netlogon.dll which is Net Logon Services, amongst others, and some of these might need internet access. If you use a Process Information utility you can get more information about the processes and their dependents running on your system. I use a utility called Starter.

So I imagine that it, or something it handles, will need internet access sometimes. However, it may well be the case that someone in China is trying to gain access to your computer, and your firewall is doing its job by preventing such access.

I haven't checked my firewall's logs lately and I turned off automatic alerts from outside hacking attempts, as I was getting so many all the time. I was constantly acknowledging the attempts whilst trying to carry on with my work. But I'm happy that the firewall is still protecting me.

Mark

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netlimiter
by sbga01 / February 6, 2008 11:45 AM PST
In reply to: Which firewall?

I am using netlimiter, I checked on my other computer and netlimiter doesnt report lsass having any connections but on this one it does.

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