A company runs a mix of on-premises servers and Azure virtual machines. They deploy Microsoft Defender for Endpoint on all servers. The security team wants to create custom queries to hunt for a specific attack pattern that involves a sequence of events across multiple machines, such as a PowerShell script being downloaded and then executed on several servers. They need to write their own detection rules based on advanced hunting data. Which Microsoft 365 Defender capability should they use?
Advanced hunting is a powerful, proactive threat hunting tool integrated directly within the Microsoft 365 Defender portal. It allows security analysts to leverage Kusto Query Language (KQL) to explore raw event data from various Microsoft 365 security products, including Defender for Endpoint, Defender for Office 365, Defender for Identity, and Microsoft Defender for Cloud Apps. This capability enables the creation of sophisticated custom detection rules and the identification of unique threats across endpoints, email, identities, and cloud applications from a single interface.
Why this answer
Advanced hunting in Microsoft 365 Defender provides a Kusto Query Language (KQL)-based query interface that allows security teams to create custom detection rules by searching raw data across endpoints, email, and identities. This capability directly supports the scenario of writing custom queries to hunt for multi-machine attack patterns, such as a PowerShell script download followed by execution, by correlating events like DeviceProcessEvents and DeviceFileEvents across multiple devices.
Exam trap
The trap here is that candidates often confuse Microsoft Sentinel's advanced hunting (which is also KQL-based but is a separate Azure service) with the advanced hunting capability native to Microsoft 365 Defender, leading them to select Sentinel even though the question explicitly asks for a Microsoft 365 Defender capability.
How to eliminate wrong answers
Option B is wrong because Microsoft Defender for Cloud is a cloud security posture management (CSPM) and cloud workload protection platform (CWPP) that focuses on securing Azure, on-premises, and multi-cloud resources through recommendations and vulnerability assessments, not on providing a custom KQL-based hunting interface for endpoint-specific event sequences. Option C is wrong because Microsoft Defender for Office 365 is designed to protect against threats in email, SharePoint, OneDrive, and Teams, and does not include advanced hunting capabilities for endpoint processes or file events across servers. Option D is wrong because Microsoft Sentinel is a cloud-native SIEM/SOAR solution that ingests data from multiple sources and offers advanced hunting, but the question specifically asks for a Microsoft 365 Defender capability; Sentinel is a separate Azure service, not a component of Microsoft 365 Defender.