SC-200 Perform threat hunting Practice Question
Exhibit
Refer to the exhibit.
```json
{
"displayName": "Hunt for Pass-the-Hash",
"description": "Detects possible PtH using Event ID 4624 with logon type 9 and NTLM authentication.",
"tactics": ["LateralMovement"],
"techniques": ["T1550.002"],
"query": "SecurityEvent\n| where EventID == 4624\n| where LogonType == 9\n| where AuthenticationPackage == 'NTLM'\n| project TimeGenerated, Account, Computer, TargetLogonId",
"triggerOperator": "gt",
"triggerThreshold": 0
}
```Refer to the exhibit. An analyst is reviewing a custom detection rule in Microsoft Sentinel. The rule is triggering many false positives from legitimate remote desktop connections. What should the analyst do to reduce false positives while keeping detection of pass-the-hash attacks?
⚠ Common exam trap
SC-200 often tests the misconception that changing logon types or data sources can reduce false positives, when in fact targeted exclusions of known legitimate activity are the correct tuning approach.
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
✓
Add an exclusion for known administrative jump boxes.
The rule detects pass-the-hash attacks by looking for suspicious logon patterns (e.g., LogonType 3 with NTLM authentication). Legitimate remote desktop connections from known administrative jump boxes are a common source of false positives. Adding an exclusion for these trusted IPs or hostnames allows the rule to continue detecting pass-the-hash attempts from other sources while suppressing noise from authorized administrative activity. This is a standard tuning technique in Microsoft Sentinel to improve signal-to-noise ratio without weakening detection coverage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the data source from SecurityEvent to Event.
Why it's wrong here
Event is a different table; it would not solve the false positive issue.
- ✗
Remove the AuthenticationPackage filter to include all packages.
Why it's wrong here
Removing the filter would include many more events, increasing false positives.
- ✗
Change LogonType to 10 to target remote interactive logons.
Why it's wrong here
Logon type 10 is remote interactive, which would miss pass-the-hash using network logon.
- ✓
Add an exclusion for known administrative jump boxes.
Why this is correct
Excluding known administrative jump boxes suppresses alerts from trusted sources performing legitimate RDP, while the rule's pass-the-hash logic still fires on anomalous authentication patterns elsewhere. This targets the false-positive source named in the stem without weakening detection coverage.
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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.