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ECCouncil 312-39 (Certified SOC Analyst) Practice Test 26

Question 250

A hunt hypothesis concerns credential dumping, but no known malicious binary hash is present. What data should the hunter prioritize?

  1. Look for credential-process access and unusual memory dumps
  2. Only web application HTTP status codes
  3. Only wireless signal strength at office access points
  4. Only exact hash matches for a single published sample

Explanation

Correct Answer

A:

Behavioral host telemetry can reveal attempts to obtain secrets even when attackers use legitimate utilities or modified binaries.

Incorrect Answers

B:

HTTP response classes do not directly observe local access to authentication process memory.

C:

RF metrics cannot identify credential process access or local dump-file creation.

D:

Hash-only detection misses renamed, altered, or novel tools that exhibit the same credential-access behavior.

Question 251

A hunt for scheduled-task persistence yields no hits, but half the Windows endpoints do not record task creation. What conclusion is justified?

  1. Scheduled-task persistence is absent from the enterprise by proof
  2. The incident response team must immediately reimage every uncovered endpoint
  3. The search query is necessarily perfect because it returned no matches
  4. The visible data are inconclusive because coverage is incomplete

Explanation

Correct Answer

D:

A negative hunt needs a clear statement of monitored scope and missing sources so readers do not overestimate confidence.

Incorrect Answers

A:

Missing telemetry on half the fleet makes such a categorical conclusion unsound.

B:

Visibility gaps call for collection improvement or targeted validation, not unscoped destructive remediation.

C:

Zero results can reflect wrong fields, parser failures, missing audit policy, or truly absent behavior.

Question 252

A hunting query produced valuable findings and should run repeatedly as a scheduled detection. What is required first?

  1. Suppress all future events matching known benign test samples regardless of context
  2. Remove the investigator's supporting evidence before operationalizing
  3. Define a stable analytic, test benign lookalikes, set thresholds, and assign ownership
  4. Schedule the raw exploratory query with no limits or alert documentation

Explanation

Correct Answer

C:

A hunt hypothesis becomes an operational control only when alert quality, data requirements, and monitoring are sustainable.

Incorrect Answers

A:

Overbroad exclusions can conceal attacker abuse of the same techniques and reduce detection quality.

B:

Original observations and negative examples are important for reproducible tests and ongoing rule maintenance.

D:

Ad hoc hunts can be expensive and noisy; direct automation may overwhelm the queue or miss late events.

Question 253

A hunt discovers malicious remote tool use that existing correlation rules missed. What output should follow?

  1. Immediate deletion of the legitimate remote tool from every server
  2. A claim that the SIEM is useless for all threats
  3. Only a private analyst note with no handoff
  4. Escalate the collection gap for detection engineering

Explanation

Correct Answer

D:

Hunt value includes both discovering active threats and converting previously invisible behavior into maintainable detection content.

Incorrect Answers

A:

Trusted management tools may be business-critical, and authorized controls should address misuse without unscoped removal.

B:

One missed technique highlights a specific coverage gap, not proof that every other SIEM analytic is ineffective.

C:

Undocumented findings can be lost across shifts and do not improve future detection or response readiness.

Question 254

A threat hunt finds no confirmed intrusions but identifies missing PowerShell script-block logs on a sensitive server group. Which report outcome is correct?

  1. Classify every server in the group as compromised automatically
  2. Hide the collection defect because no malicious events were observed
  3. Document the negative hunt result and telemetry coverage gap
  4. Declare the server group safe from all script-based attacks

Explanation

Correct Answer

C:

A useful hunt report distinguishes absence of evidence from incomplete coverage and proposes corrective actions.

Incorrect Answers

A:

Missing logs are a monitoring weakness and do not independently demonstrate malicious execution.

B:

Failing to report a gap misleads stakeholders and prevents the next hunt from obtaining stronger evidence.

D:

Without script-block visibility the result cannot support a broad clean-bill-of-health conclusion.

Question 255

A SOC suspects a cloud identity that also has on-premises access was used for lateral movement. Which hunting pivot is strongest?

  1. Match solely on the identity's display name without unique identifiers
  2. Monitor only public website access logs
  3. Correlate hybrid sign-ins, role grants and endpoint sessions
  4. Inspect only cloud billing totals and ignore authentication logs

Explanation

Correct Answer

C:

The hypothesis crosses trust boundaries, so joined identity context can connect separate platform activity into one candidate chain.

Incorrect Answers

A:

Display names can collide or change and can lead to false entity joins across cloud and directory systems.

B:

Web requests lack the detailed identity, endpoint, and internal remote-session context needed for this hypothesis.

D:

Cost changes may be relevant to some compromises but do not trace the suspected identity across systems.

Question 256

A hunt tests whether a malware family beaconed every three hours last month. What query limitation must be considered?

  1. Data retention and clock alignment across the full intended period
  2. The current number of active screens in the SOC
  3. The names of analysts assigned to unrelated support tickets
  4. The current server hostname capitalization style

Explanation

Correct Answer

A:

Missing older events or skewed time can conceal periodic patterns, leading to a false impression of no matching activity.

Incorrect Answers

B:

Display count does not determine whether historical network flows remain accessible for the hunt.

C:

Staffing metadata does not establish beacon timing or the completeness of source records.

D:

Hostname case alone is unrelated to historical event availability or periodic communication intervals.

Question 257

A hunting team has no reliable malware indicators and wants to detect unauthorized modification of endpoint security settings. What analytic focus is suitable?

  1. Require a named malware family for every security control change
  2. Ignore configuration changes because only file signatures are valuable
  3. Assume all security settings changes indicate successful encryption
  4. An indicator of attack: defense disabling followed by execution

Explanation

Correct Answer

D:

Attack-pattern observations can surface adversary behavior before or without a known malicious hash, though they need contextual confirmation.

Incorrect Answers

A:

Attribution is not necessary to identify suspicious tampering and can delay response to novel tools.

B:

Disabling defenses is a meaningful behavior regardless of whether an executable hash appears on a threat feed.

C:

Tampering can precede several attack goals and does not itself prove ransomware impact.

Question 258

A hunt watches a built-in Windows utility execute unusual outbound downloads. Why is allowlisting the utility name alone insufficient?

  1. Abuse of a trusted system tool depends on execution context
  2. The file's publisher signature completely defines whether its usage was authorized
  3. Every use of a built-in utility proves an advanced persistent threat
  4. Microsoft-signed programs cannot make network connections

Explanation

Correct Answer

A:

Living-off-the-land execution often uses trusted binaries for malicious purposes; behavior differentiates misuse from normal administration.

Incorrect Answers

B:

A valid signature describes file provenance, not the intent or permissions behind a particular invocation.

C:

Common administration is not inherently hostile; the security decision depends on the surrounding activity.

D:

Signed utilities may legitimately communicate, which is precisely why attackers can try to blend in.

Question 259

A threat-hunting team wants another analyst to reproduce a campaign-based search. What should the playbook include?

  1. Only an instruction to use any security tool available
  2. Only the final count of suspicious events with no query definitions
  3. Only the name of the external threat actor
  4. Define the hypothesis, data, time window, tests and escalation

Explanation

Correct Answer

D:

A reproducible hunt method reduces individual analyst dependency and supports consistent testing across environments.

Incorrect Answers

A:

Vague tooling guidance omits data prerequisites and makes results incomparable between analysts.

B:

A result count without method or scope cannot be reproduced or evaluated for false positives and coverage gaps.

C:

Actor labels provide context but not the local telemetry, search logic, and decision rules required to repeat a hunt.

Question 260

An investigation yields a strong new behavioral detector for a rare admin-tool abuse technique. What should be handed to operations?

  1. A blanket rule to block every administrative remote session
  2. A guarantee that the detector catches every future variation of the technique
  3. A tested detection with prerequisites, owner and response guidance
  4. Only the original analyst's private search history

Explanation

Correct Answer

C:

Hunting produces durable value when discoveries become maintainable detections with clear triage actions and known limitations.

Incorrect Answers

A:

Remote access is often legitimate and a universal block ignores the discriminating behavior the hunt uncovered.

B:

Adversaries adapt, telemetry changes, and no single analytic can promise complete future coverage.

D:

Private searches are hard to operate reliably and lack the documentation required for ongoing SOC use.

Certified SOC Analyst (312-39) Practice Tests