Question 530 of 1,152

Threats, Vulnerabilities, and Mitigations →hardMultiple SelectObjective-mapped

Quick Answer

The correct first actions are to isolate the workstation and capture volatile evidence. Isolating the workstation immediately cuts the HTTPS beacon traffic to the rare domain, severing the command-and-control communication and preventing lateral movement to other systems, while leaving the disk-based evidence intact for later analysis. Capturing volatile evidence—such as memory contents, running processes, and active network connections—is critical because this data disappears the moment the system is powered down or disconnected, and it holds the forensic keys to understanding the attack chain, including the rundll32 execution and scheduled task creation. On the Security+ SY0-701 exam, this scenario tests your understanding of the incident response containment steps and the priority of preserving volatile data over non-volatile data; a common trap is to immediately shut down the workstation, which destroys the very evidence needed for root-cause analysis. Remember the mnemonic “ICED” for incident response containment: Isolate, Capture volatile Evidence, then Document.

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.

An EDR alert shows a finance workstation launching rundll32 from %AppData%, creating a scheduled task, and making repeated HTTPS beacons to a rare domain. The user still has open accounting files, and the SOC wants to slow spread without losing evidence. What two actions should be taken first? Select two.

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

Question 1hardmulti select

Full question →

A
Isolate the workstation from the network using EDR or NAC containment.
Isolating the host immediately stops most outbound command-and-control traffic and reduces the chance of lateral spread. It is the best first containment step when malware is still active. It preserves the system state better than power loss, which can destroy volatile evidence.
B
Immediately wipe and reimage the workstation before collecting anything else.
Why wrong: Reimaging removes the malware, but it also destroys important evidence and loses visibility into how the compromise occurred. That is a recovery step after containment and acquisition, not the first action when the endpoint is still active.
C
Capture volatile evidence such as memory contents, running processes, and active network connections.
Collecting volatile data while the machine is live preserves clues about injected code, memory-only malware, sockets, and active sessions. This supports later investigation and root-cause analysis. It is appropriate before shutdown when the organization wants to preserve evidence.
D
Power the workstation off immediately to stop the malware process.
Why wrong: Powering off may stop execution, but it also destroys volatile evidence and can interfere with understanding the infection. It is sometimes justified for safety, but it is not the best first choice when the host is still available for live response.
E
Disable every user account in the finance department to prevent further compromise.
Why wrong: A broad account shutdown would be disruptive and is not targeted to the likely infected host. Containment should start with the affected system and any confirmed compromised identities, rather than creating unnecessary business impact.

Full breakdown with real-world context →

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

✓

Isolate the workstation from the network using EDR or NAC containment.

Isolating the workstation (A) stops the malware from communicating with its C2 server via HTTPS beacons and prevents lateral movement, while preserving the evidence on disk. Capturing volatile evidence (C) before any shutdown or isolation ensures that memory-resident artifacts, active network connections, and running processes are preserved, which are critical for forensic analysis and understanding the attack chain.

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.

✓
Isolate the workstation from the network using EDR or NAC containment.
Why this is correct
Isolating the host immediately stops most outbound command-and-control traffic and reduces the chance of lateral spread. It is the best first containment step when malware is still active. It preserves the system state better than power loss, which can destroy volatile evidence.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Immediately wipe and reimage the workstation before collecting anything else.
Why it's wrong here
Reimaging removes the malware, but it also destroys important evidence and loses visibility into how the compromise occurred. That is a recovery step after containment and acquisition, not the first action when the endpoint is still active.
✓
Capture volatile evidence such as memory contents, running processes, and active network connections.
Why this is correct
Collecting volatile data while the machine is live preserves clues about injected code, memory-only malware, sockets, and active sessions. This supports later investigation and root-cause analysis. It is appropriate before shutdown when the organization wants to preserve evidence.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Power the workstation off immediately to stop the malware process.
Why it's wrong here
Powering off may stop execution, but it also destroys volatile evidence and can interfere with understanding the infection. It is sometimes justified for safety, but it is not the best first choice when the host is still available for live response.
✗
Disable every user account in the finance department to prevent further compromise.
Why it's wrong here
A broad account shutdown would be disruptive and is not targeted to the likely infected host. Containment should start with the affected system and any confirmed compromised identities, rather than creating unnecessary business impact.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may choose to power off the workstation (D) thinking it stops the malware, but this destroys volatile evidence and can trigger anti-forensic mechanisms, whereas isolation and memory capture are the correct first steps in incident response.

Detailed technical explanation

How to think about this question

Rundll32.exe is a legitimate Windows binary used to execute DLLs, but when launched from %AppData% it indicates DLL side-loading or living-off-the-land (LotL) abuse. The repeated HTTPS beacons to a rare domain suggest a C2 channel using encrypted traffic to evade network detection, often seen with malware like Cobalt Strike or BumbleBee. Capturing memory with tools like FTK Imager or WinPmem preserves the DLL payload and any injected code, while network isolation via EDR containment (e.g., blocking all traffic except to a forensic collector) stops the beacon without triggering anti-forensic routines.

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 SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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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: Isolate the workstation from the network using EDR or NAC containment. — Isolating the workstation (A) stops the malware from communicating with its C2 server via HTTPS beacons and prevents lateral movement, while preserving the evidence on disk. Capturing volatile evidence (C) before any shutdown or isolation ensures that memory-resident artifacts, active network connections, and running processes are preserved, which are critical for forensic analysis and understanding the attack chain.

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: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Same concept, more angles

1 more ways this is tested on SY0-701

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. EDR alerts show a finance laptop spawning an unsigned executable from %AppData%, attempting to read LSASS memory, and making outbound HTTPS connections to a rare domain. The user says they only opened a spreadsheet attachment. What is the best immediate action?

medium

A.Reboot the laptop to clear any malicious process from memory.
✓ B.Isolate the laptop from the network using the EDR platform.
C.Run a full antivirus scan and wait for the results before taking further action.
D.Reset the user's password and keep the laptop online for monitoring.

Why B: Option B is correct because the EDR alerts indicate a likely credential theft attempt (LSASS read) and C2 communication (rare domain). Isolating the laptop immediately stops data exfiltration and lateral movement, which is the priority before any remediation. Reboot, scan, or password reset would not prevent the attacker from already having access to credentials or the network.

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