The correct answer is that this KQL query is designed to hunt for code execution via rundll32.exe loading JavaScript. This technique works because PowerShell can spawn rundll32.exe with a command line containing 'javascript:', which instructs the Windows library to execute arbitrary JavaScript code directly, effectively bypassing application control policies or script execution restrictions. On the Microsoft Security Operations Analyst SC-200 exam, this scenario tests your ability to recognize process injection and living-off-the-land binaries (LOLBins) used for defense evasion, with a common trap being confusion with regsvr32.exe or lateral movement indicators. The key memory tip is to remember that 'javascript:' in a rundll32 command line is a direct signature for code execution, not for registration or data theft.
SC-200 Perform threat hunting Practice Question
This SC-200 practice question tests your understanding of perform threat hunting. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
```kusto
DeviceProcessEvents
| where Timestamp > ago(7d)
| where InitiatingProcessFileName == "powershell.exe"
| where FileName == "rundll32.exe"
| where ProcessCommandLine contains "javascript:"
| project Timestamp, DeviceName, AccountName, FileName, ProcessCommandLine
```
The KQL query above is used in a threat hunt. What is the most likely scenario this query is designed to detect?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Hunting for code execution via rundll32.exe loading JavaScript
The query looks for PowerShell spawning rundll32.exe with a command line containing 'javascript:', which is a common technique to execute JavaScript via rundll32 as a form of code execution or bypass. Option A is incorrect because regsvr32.exe is not involved. Option B is for lateral movement, not shown. Option D is for data exfiltration, not indicated.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Identification of lateral movement using PsExec
Why it's wrong here
The query does not include PsExec or network connection events.
Hunting for code execution via rundll32.exe loading JavaScript
Why this is correct
The combination of PowerShell spawning rundll32 with 'javascript:' indicates potential code execution via JavaScript.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Detection of regsvr32.exe being used to execute scriptlet files
Why it's wrong here
The query filters for rundll32.exe, not regsvr32.exe.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Perform threat hunting — This question tests Perform threat hunting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Hunting for code execution via rundll32.exe loading JavaScript — The query looks for PowerShell spawning rundll32.exe with a command line containing 'javascript:', which is a common technique to execute JavaScript via rundll32 as a form of code execution or bypass. Option A is incorrect because regsvr32.exe is not involved. Option B is for lateral movement, not shown. Option D is for data exfiltration, not indicated.
What should I do if I get this SC-200 question wrong?
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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