Try fport, track it back to the apps running on that port...that's where you
start. Then scan those files and/or monitor traffic.
Ken
Director of Rapid Response Team
-----Original Message-----
From: Ted Pham [mailto:telamon@cmu.edu]
Sent: Thursday, July 06, 2006 9:51 PM
To: No@email.com
Cc: incidents@securityfocus.com
Subject: Re: Outbound Connections
The [System] process (PID 4 on this Windows XP Pro Box) is making
strange outbound connections to unknown IP address spaces on one of our
machines.
It tries to connect to port 139 and 445. Is there any way to figure
out what is causing the system process to do this? The connections do
not seem to be successful. The Packet trace shows the outbound SYS
and then nothing. Any help would be appreciated!
Thanks!
I haven't actually tested this on a compromised system before, but it's
worth a shot.
1) Get Process Explorer from www.sysinternals.com
2) Run Process Explorer.
3) Right click the System process and choose Properties.
4) On the TCP/IP tab, locate one of the strange outbound connections and
then hit the Stack button.
Hopefully whatever driver or dll opening the connections is listed on the
thread stack.
Then again, if it's clver the thing could be cloaking itself. In that case
try Rootkit Revealer.
Good luck,
Ted
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