What software can Dhru use to perform network traffic analysis and detect malicious connections?

Wireshark is a powerful network protocol analyzer that allows users to capture and interactively browse the traffic running on a computer network. It is particularly well-suited for network traffic analysis, as it provides detailed insights into the packets transmitted over a network, including their origin, destination, and contents. This level of detail is essential for identifying malicious connections, as it enables the analyst to recognize patterns or anomalies that could indicate security threats.

The other options do not fit the criteria for network traffic analysis effectively. Microsoft Baseline Security Analyzer is primarily a tool for assessing the security state of Microsoft systems rather than analyzing network traffic. MagicTree serves more as a mind mapping and note-taking tool, without capabilities for network analysis. KeepNote is a note-taking application designed for recording information rather than capturing or analyzing live network data. Thus, Wireshark stands out as the appropriate choice for detecting and analyzing network traffic for malicious activities.