- A
Trojan, because the malicious activity likely started from a user-opening event.
Why wrong: A trojan often arrives disguised as legitimate software, but this stem emphasizes memory-only execution and living-off-the-land tooling rather than a simple fake application dropper.
- B
Worm, because the host is making repeated outbound network connections.
Why wrong: Worms self-replicate across systems, usually exploiting network services. Outbound beaconing alone does not prove replication or lateral spread.
- C
Rootkit, because the process is using hidden commands and network connections.
Why wrong: Rootkits are designed to hide presence at the kernel or boot level. Hidden PowerShell and no disk artifact point more strongly to fileless execution than stealthy kernel tampering.
- D
Fileless attack, because the payload is executed in memory using legitimate scripting tools and leaves little on disk.
Fileless attack is the best fit because the sequence uses trusted built-in tools, encoded PowerShell, and no obvious executable drop on disk. The suspicious behavior happens in memory and through script interpretation, which makes detection harder than with traditional malware files. The blocked scheduled task and later HTTPS beaconing are consistent with in-memory execution and persistence attempts after initial delivery.
Quick Answer
The answer is a fileless attack because the payload executes entirely in memory using legitimate tools like winword.exe spawning powershell.exe with hidden, no-profile, and encoded arguments, never writing a new executable to disk. This in-memory malware technique exploits living-off-the-land binaries (LOLBins) to evade traditional antivirus and disk-based detection, while the subsequent scheduled task block and persistent HTTPS connections to a cloud IP reveal a command-and-control (C2) channel without file drops. On the Security+ SY0-701 exam, this scenario tests your ability to recognize fileless attack detection by focusing on process lineage and memory-resident behavior rather than signature-based alerts. A common trap is assuming a new executable must be written for malware to persist, but fileless attacks rely on scripting hosts and registry manipulation instead. Memory tip: “No file, no signature—think PowerShell in memory for the win.”
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.
EDR on a workstation shows winword.exe spawning powershell.exe with hidden, no-profile, and encoded arguments. No new executable is written to disk. Minutes later, a scheduled task creation is blocked, but the same host continues making HTTPS requests to a cloud IP address. Which malware category best fits this behavior?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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 the payload is executed in memory using legitimate scripting tools and leaves little on disk.
The correct answer is D because the attack uses legitimate tools (winword.exe spawning powershell.exe) with hidden, no-profile, and encoded arguments to execute a payload entirely in memory, never writing a new executable to disk. This is the hallmark of a fileless attack, which relies on in-memory execution and living-off-the-land binaries (LOLBins) to evade traditional antivirus and disk-based detection. The subsequent scheduled task creation block and persistent HTTPS connections to a cloud IP further indicate a fileless malware that establishes command-and-control (C2) without dropping files.
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.
- ✗
Trojan, because the malicious activity likely started from a user-opening event.
Why it's wrong here
A trojan often arrives disguised as legitimate software, but this stem emphasizes memory-only execution and living-off-the-land tooling rather than a simple fake application dropper.
- ✗
Worm, because the host is making repeated outbound network connections.
Why it's wrong here
Worms self-replicate across systems, usually exploiting network services. Outbound beaconing alone does not prove replication or lateral spread.
- ✗
Rootkit, because the process is using hidden commands and network connections.
Why it's wrong here
Rootkits are designed to hide presence at the kernel or boot level. Hidden PowerShell and no disk artifact point more strongly to fileless execution than stealthy kernel tampering.
- ✓
Fileless attack, because the payload is executed in memory using legitimate scripting tools and leaves little on disk.
Why this is correct
Fileless attack is the best fit because the sequence uses trusted built-in tools, encoded PowerShell, and no obvious executable drop on disk. The suspicious behavior happens in memory and through script interpretation, which makes detection harder than with traditional malware files. The blocked scheduled task and later HTTPS beaconing are consistent with in-memory execution and persistence attempts after initial delivery.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates see 'hidden commands' and 'network connections' and incorrectly associate them with a rootkit, but the 'hidden' refers to PowerShell's `-WindowStyle Hidden` parameter, not kernel-level hiding, and the network connections are standard HTTPS C2 traffic, not a rootkit's stealthy communication.
Detailed technical explanation
How to think about this question
Fileless malware often leverages PowerShell's `-EncodedCommand` parameter to decode and execute a Base64-encoded script directly in memory, bypassing disk-based scanning. The `-WindowStyle Hidden` and `-NoProfile` flags prevent user interface and profile script execution, making the attack stealthier. In real-world scenarios, such as the 2017 'Fileless' PowerShell-based attacks, the malware uses WMI or scheduled tasks for persistence, which aligns with the blocked scheduled task creation in this question.
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 the payload is executed in memory using legitimate scripting tools and leaves little on disk. — The correct answer is D because the attack uses legitimate tools (winword.exe spawning powershell.exe) with hidden, no-profile, and encoded arguments to execute a payload entirely in memory, never writing a new executable to disk. This is the hallmark of a fileless attack, which relies on in-memory execution and living-off-the-land binaries (LOLBins) to evade traditional antivirus and disk-based detection. The subsequent scheduled task creation block and persistent HTTPS connections to a cloud IP further indicate a fileless malware that establishes command-and-control (C2) without dropping files.
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: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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