Which of the following Windows agents would need to be configured on an Azure VM for an investigator to query Its operating system logs sent to Azure Storage?

The Azure Diagnostics extension is an agent that collects monitoring data from the guest operating system of Azure compute resources, including virtual machines. It is specifically designed to gather various types of data, such as performance counters, crash dumps, and, most importantly for this scenario, Windows Event Logs. A primary feature of the Diagnostics extension is its ability to route this collected data directly to an Azure Storage account. An investigator can then access and query these logs from the configured storage account for forensic analysis.

A. Azure Monitor is the overarching cloud monitoring service that ingests and analyzes data; it is not the specific agent installed on the VM itself.
C. The Dependency agent is used for mapping network connections and inter-process dependencies, not for collecting general operating system event logs.
D. The Log Analytics agent's primary destination for collected data is a Log Analytics workspace, not directly to an Azure Storage account as specified in the question.

1. Microsoft Azure Documentation, "Azure Diagnostics extension overview." This document states, "The Azure Diagnostics extension is an agent in Azure Monitor that collects monitoring data from the guest operating system of Azure compute resources including virtual machines... The primary destination for diagnostic data is Azure Storage. You can also send it to Azure Monitor Metrics or Azure Event Hubs." Under the "Data collected" section, it explicitly lists "Windows event logs (from System, Application, and Security logs)."

Source: Microsoft Corporation. (n.d.). Azure Diagnostics extension overview. Microsoft Docs. Retrieved from https://docs.microsoft.com/en-us/azure/azure-monitor/agents/diagnostics-extension-overview

2. Microsoft Azure Documentation, "Install and configure Windows Azure Diagnostics Extension (WAD)." This guide provides the configuration schema for the extension. In the "Example configuration" section, it shows how to define WindowsEventLog as a DataSource and configure the StorageAccount as the destination sink for the collected data.

Source: Microsoft Corporation. (n.d.). Install and configure Windows Azure Diagnostics Extension (WAD). Microsoft Docs. Retrieved from https://docs.microsoft.com/en-us/azure/azure-monitor/agents/diagnostics-extension-windows-install (See sections: "Public configuration schema" and "Example configuration").