Solved

Find process making outbound connections

Posted on 2014-03-09
5
447 Views
Last Modified: 2014-03-19
I have a system which is repeatedly trying to make an outbound connection on port 4343. Judging from the pcap I took from the perimeter firewall, the connection is never fully established. It attempts the same public IP for each connection attempt.

I have since made sure this port outbound is not allowed.

Anyhow, I see the system still attempts connections as it is filling up my Deny logs. What is the best way to find out what process on this system is attempting this connection? I have tried TCPView and Currports but neither show this activity. I am not sure if those only show it once the connection is established or not. I also do not see anything from netstat -ano.
0
Comment
Question by:Schuyler Dorsey
5 Comments
 
LVL 10

Author Comment

by:Schuyler Dorsey
ID: 39915868
The public IP is 150.1.1.2 and appears to be in Japan.
0
 
LVL 15

Accepted Solution

by:
ZabagaR earned 500 total points
ID: 39916031
Microsoft Network Monitor 3.4 will capture and can sort connections by the .exe that initiates the connection.

http://www.microsoft.com/en-us/download/details.aspx?id=4865
0
 
LVL 2

Expert Comment

by:IMGIDC
ID: 39922969
did you try to use
netstat
!!!
0
 
LVL 10

Author Comment

by:Schuyler Dorsey
ID: 39925225
Netstat did not show it. The MS Network Monitor showed it was Console.exe which is the built in SBS console. I have not seen this behavior before.
0
 
LVL 61

Expert Comment

by:btan
ID: 39928226
First to make sure the IP of the target machine is the actual machine to make sure it is not NAT or when through some proxy. Supposedly, running netstat -a -n -o (or netstat -a -b) and it will lead to PID and then the process. Note that the Process Identifier in the Task Manager is not turned on by default.

another useful tool is processhacker which will try to reveal hidden process and rootkit, including see the network connections used by a process and display port, protocol, remote/local IP connections including PID and status of a process (whether it’s listening or not).
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Join & Write a Comment

Cybersecurity has become the buzzword of recent years and years to come. The inventions of cloud infrastructure and the Internet of Things has made us question our online safety. Let us explore how cloud- enabled cybersecurity can help us with our b…
Transferring data across the virtual world became simpler but protecting it is becoming a real security challenge.  How to approach cyber security  in today's business world!
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now