- A
Worm behavior, because the infection would self-replicate across systems through the network.
Why wrong: Worms focus on spreading to other systems. The key clues here are in-memory execution and document-triggered payloads, not autonomous network propagation.
- B
Fileless attack, because malicious code runs in memory and leaves little or no executable artifact on disk.
This is a classic fileless attack pattern. The process chain from a trusted Office app to hidden PowerShell, the encoded command line, the lack of a new binary on disk, and the disappearance after reboot all point to code executing primarily in memory. That makes detection harder and often means the initial document or script acts as the launcher rather than a traditional dropper.
- C
Rootkit behavior, because the malware is hidden from normal user-mode tools.
Why wrong: Rootkits hide themselves, but the strongest clues here are memory-only execution and script-based launching from Office, not kernel-level hiding or tampering with system visibility.
- D
Ransomware, because the user opened an invoice attachment before the suspicious activity started.
Why wrong: Ransomware would usually encrypt files, rename them, or display a ransom note. The described symptoms are process execution and beacons, not encryption or extortion.
SY0-701 Threats, Vulnerabilities, and Mitigations Practice Question
This SY0-701 practice question tests your understanding of threats, vulnerabilities, and mitigations. 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.
A finance laptop is opened to review an invoice attachment. EDR then shows winword.exe launching powershell.exe with hidden, no-profile, and base64-encoded arguments. No executable is written to disk, network beacons begin from memory, and after a reboot the activity disappears unless the document is opened again. What type of malware behavior is most likely?
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 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
Fileless attack, because malicious code runs in memory and leaves little or no executable artifact on disk.
The scenario describes malicious code that executes entirely in memory without writing an executable to disk, which is the defining characteristic of a fileless attack. Winword.exe launching PowerShell with hidden, no-profile, and base64-encoded arguments is a classic technique to load and execute payloads directly in memory, bypassing traditional file-based detection. The fact that activity disappears after reboot unless the document is reopened confirms that no persistent artifact remains on disk, further supporting fileless behavior.
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.
- ✗
Worm behavior, because the infection would self-replicate across systems through the network.
Why it's wrong here
Worms focus on spreading to other systems. The key clues here are in-memory execution and document-triggered payloads, not autonomous network propagation.
- ✓
Fileless attack, because malicious code runs in memory and leaves little or no executable artifact on disk.
Why this is correct
This is a classic fileless attack pattern. The process chain from a trusted Office app to hidden PowerShell, the encoded command line, the lack of a new binary on disk, and the disappearance after reboot all point to code executing primarily in memory. That makes detection harder and often means the initial document or script acts as the launcher rather than a traditional dropper.
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.
- ✗
Rootkit behavior, because the malware is hidden from normal user-mode tools.
Why it's wrong here
Rootkits hide themselves, but the strongest clues here are memory-only execution and script-based launching from Office, not kernel-level hiding or tampering with system visibility.
- ✗
Ransomware, because the user opened an invoice attachment before the suspicious activity started.
Why it's wrong here
Ransomware would usually encrypt files, rename them, or display a ransom note. The described symptoms are process execution and beacons, not encryption or extortion.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse the initial infection vector (opening an invoice) with the malware type (ransomware), but the key behavioral indicator is the in-memory execution and lack of disk artifacts, which points to fileless malware, not ransomware.
Detailed technical explanation
How to think about this question
Fileless malware often leverages living-off-the-land binaries (LOLBins) like PowerShell, WMI, or mshta to execute payloads in memory. The base64-encoded argument is commonly used to obfuscate the payload, and the -NoProfile and -Hidden flags reduce execution footprint and avoid user interaction. In real-world attacks, such as those using Cobalt Strike or Empire, the beaconing from memory allows command-and-control communication without writing a persistent binary, making detection reliant on behavioral analysis rather than signature-based scanning.
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.
TExam Day Tips
- 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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Threats, Vulnerabilities, and Mitigations — This question tests Threats, Vulnerabilities, and Mitigations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Fileless attack, because malicious code runs in memory and leaves little or no executable artifact on disk. — The scenario describes malicious code that executes entirely in memory without writing an executable to disk, which is the defining characteristic of a fileless attack. Winword.exe launching PowerShell with hidden, no-profile, and base64-encoded arguments is a classic technique to load and execute payloads directly in memory, bypassing traditional file-based detection. The fact that activity disappears after reboot unless the document is reopened confirms that no persistent artifact remains on disk, further supporting fileless behavior.
What should I do if I get this SY0-701 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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.
About these practice questions
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Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA 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 SY0-701 exam.
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