Determine which program is accessing network shares?

On computer A there is a program that makes a network connection to computer B and accesses the network shares. This occurs 20+ times in less tan two seconds.

The event that is fired on computer B is Event ID: 4648. This event is generated when a process attempts to log on an account by explicitly specifying that account's credentials.

I think it has something to do with Adobe Creative Cloud but am unsure. How can I determine which program on computer A is making these requests to computer B?

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