Note: if you are using Microsoft Message Analyzer the process ID is in the trace. If you need to perform such a diagnosis remotely and you have access only to the command line on the remote machine, you may consider using TShark and wtrace (with arguments: –filter TCPIP –nosummary) in place of Wireshark and Process Monitor. If you look at the procmon screenshot above you will see that the process I was looking for was ImageVerifier.exe. The time of the event will slightly differ (Wireshark uses WinPcap/npcap driver while Process Monitor relies on ETW TCP/IP events) but usually, it shouldn’t be a problem. With this information, we can locate the corresponding event in the procmon trace, and by checking its properties, learn a lot about the process which created a given network packet. Now, it is time to locate one of the suspicious events and save its time and the source port: When we finish, we need to change the default time format in Wireshark ( View -> Time Display Format -> Time of Day or just press Ctrl+Alt+2) to the one used in Process Monitor. ![]() ![]() With procmon running, we may re-record the network traffic in Wireshark. As the Process Monitor trace may grow very quickly it is a good idea to drop all events except TCP/IP category ( Filter -> Drop Filtered Events): My preferred way to do this is by using Process Monitor. So if we collect this information while recording the Wireshark trace, we will be able to finish our analysis. Fortunately, TLS is using TCP underneath and each TCP packet has a port number which uniquely identifies a process at a given time. As the whole traffic (except handshake) was encrypted it was not possible to guess who was sending those packets. At first, I only recorded traces in Wireshark and filtered them ( = "TLS 1.0"):Īpparently, the requests were there. I needed to locate a process on a Virtual Machine (local address 10.0.2.5) which was still using TLSv1 to connect to our load balancer. And sometimes this information is necessary to investigate the problem you are facing. ![]() By default when you record a trace in Wireshark, you won’t find process IDs in it.
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