New to Pcap Analysis, Need Help finding Malicious Activity in a Large Pcap File

As the Title suggests I am brand new to this and would love some help getting pointed in the right direction.

The pcap file I have to analyze is about 177k packets and there is one instance of malicious activity that I need to filter through and find.

Are there any analysis tools besides Wireshark that can help me narrow down and locate the instance of malicious traffic?

Any help would be greatly appreciated!

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