To search for additional downloads of a malicious file by other hosts, the file hash value is needed. The hash value provides a unique identifier for each specific file version, enabling cybersecurity professionals to track down identical files across networks. References := Cisco Certified CyberOps Associate Overview

Explanation:
Exploitation - The targeted Environment is taken advantage of triggering the threat actor's code Installation - Backdoor is placed on the victim system allowing the threat actor to maintain the persistence.
Command and Control - An outbound connection is established to an Internet-based controller server.
Actions and Objectives - The threat actor takes actions to violate data integrity and availability

The exhibit shows a high rate of SYN packets being sent from multiple sources towards a single destination IP. This is indicative of a SYN flood attack, where the attacker sends a succession of SYN requests to a target' s system in an attempt to consume enough server resources to make the system unresponsive to legitimate traffic. References := Cisco Cybersecurity Operations Fundamentals - Module 4: Network Intrusion Analysis