SC-200 Perform threat hunting Practice Question
A threat hunter is using Microsoft Sentinel and Microsoft Defender XDR to hunt for a potential cross-domain attack where an attacker compromised an on-premises server and then used a privileged account to sign into Microsoft 365 from a new IP. The hunter wants to identify the server using a query that combines Windows Event Logs from the server with Microsoft 365 sign-in logs. Which approach should the hunter take to correlate the data?
⚠ Common exam trap
SC-200 often tests whether candidates know which table holds which data — the trap is choosing DeviceLogonEvents (Defender XDR) when the requirement is on-premises Windows Event Logs joined with SigninLogs in Sentinel.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp
To correlate on-premises Windows logons with Microsoft 365 sign-ins, the hunter must ingest Windows Security Event ID 4624 (successful logon) from the server into a Log Analytics workspace, then join with the SigninLogs table on account name and timestamp. This is the standard Sentinel correlation pattern for cross-domain attacks. Event ID 4624 captures the account and logon type, enabling linkage to cloud sign-ins.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a Sentinel watchlist of known attacker IPs and compare with server logs
Why it's wrong here
A watchlist of known attacker IPs only matches addresses already identified; the scenario requires discovering which server maps to the new sign-in IP. It is tempting because watchlists genuinely accelerate lookups against threat-intelligence indicators during investigations where the malicious addresses are already known.
- ✗
Enable Sysmon on the server and use its Event ID 3 (network connection) to find the IP
Why it's wrong here
Sysmon Event ID 3 records local network connections, not the source IP that Microsoft 365 sign-in logs attribute to the privileged account, so no join key exists. It is tempting because Sysmon process and network telemetry is excellent for host-level intrusion hunting within a single endpoint.
- ✓
Ingest Windows Security Event logs (Event ID 4624) from the server into a Log Analytics workspace, and join with SigninLogs on account name and timestamp
Why this is correct
Ingesting Windows Security Event ID 4624 into a Log Analytics workspace lets the hunter join those sign-in events with SigninLogs on account name and timestamp, correlating the on-premises server compromise with the Microsoft 365 sign-in from the new IP.
- ✗
Use the DeviceLogonEvents table in Microsoft Defender XDR advanced hunting
Why it's wrong here
DeviceLogonEvents covers interactive and remote logons recorded by Defender for Endpoint, not Windows Event Log security events joined to Entra sign-in logs, and it omits the server's source IP correlation. It is tempting because advanced hunting across Defender XDR tables is the natural tool for endpoint logon investigation.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This SC-200 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-200 exam.