ECCouncil 212-89 (EC-Council Certified Incident Handler) Practice Test 27

Question 260

The initial evidence record needs corroboration after this finding: A live Linux host is scheduled for shutdown, but investigators need its active connections and processes. What case-specific examination makes the evidence record reliable?

  1. Maintain tested live-response toolkits and acquisition procedures
  2. Preserve the exact query, time range, timezone and export job identifier
  3. Capture active socket, process and memory state using approved tools
  4. Delay shutdown briefly under approved risk controls while collection completes

Explanation

Correct Answer

C:

Volatile information can expose current sessions and malware that disk imaging misses; the first responder needs evidence bearing on which artifacts will disappear on shutdown with source and context recorded.

Incorrect Answers

A:

Prepared collection reduces errors when time is constrained; the requirement concerns which artifacts will disappear on shutdown, so prevention is not incident verification.

B:

Without collection parameters, missing events cannot be interpreted reliably; the relevant condition for that step is whether the log collection is reproducible, which is not shown for which artifacts will disappear on shutdown.

D:

Authorized sequencing balances continued compromise risk against evidence loss; the case needs scene or evidence validation addressing which artifacts will disappear on shutdown; immediate protection does not substantiate findings.

Question 261

Before any intrusive acquisition, the scene notes state: An investigator ships an exhibit internationally without checking restrictions on sensitive data and custody documentation. Which verification or documentation step is required for the stated evidence uncertainty?

  1. Identify the last documented holder and reconcile courier tracking records
  2. Hold shipment pending legal and evidence-custodian approval
  3. Preapprove cross-border forensic transfer pathways and contracts
  4. Identify applicable data-transfer restrictions, legal authority and shipping custody terms

Explanation

Correct Answer

D:

Physical shipment may trigger privacy, customs and contractual obligations; the resulting observation can be checked against the evidentiary question: whether cross-border handling is authorized.

Incorrect Answers

A:

An undocumented handoff creates a custody gap that must be explained; the activity targets where chain of custody lost accountability; scene or evidence validation here concerns whether cross-border handling is authorized.

B:

Preservation is preferable to an unauthorized international transfer; immediate protection does not substantiate findings in the decision about whether cross-border handling is authorized.

C:

Prepared procedures avoid delays during time-critical investigations; the case needs scene or evidence validation addressing whether cross-border handling is authorized; prevention is not incident verification.

Question 262

After initial scene control, the chain-of-custody owner reviews: A USB drive was acquired bit for bit, but the stored image cannot be matched to the source. What acquisition, packaging, preservation or custody repair is required?

  1. Document tool footprint and verify captured memory integrity
  2. Repeat acquisition or explain verification failure with full records
  3. Calculate and compare cryptographic hashes for source and forensic image
  4. Quarantine the unverified image from downstream conclusions until checked
  5. Record acquisition-time hashes and periodic integrity checks

Explanation

Correct Answer

B:

A new verified copy may repair the gap if the source remains available; this correction supports an authenticated evidence trail for whether evidence integrity is demonstrable before handling is closed.

Incorrect Answers

A:

Collection side effects must be recorded even with careful tooling; that method could help with how the collection method can destroy artifacts; the evidence-handling correction decision here involves whether evidence integrity is demonstrable.

C:

Matching digests support that the copied bytes are unchanged within hashing assumptions; when judging whether evidence integrity is demonstrable, verification is not the corrective step; this is instead scene or evidence validation.

D:

Analysts should not treat an uncertain copy as authoritative evidence; for whether evidence integrity is demonstrable, temporary protection does not complete correction; evidence-handling correction remains necessary.

E:

Routine verification exposes corruption and accidental replacement; the requirement concerns whether evidence integrity is demonstrable, so future hardening is not current-state recovery.

Question 263

Before detailed examination, an evidence-preservation decision concerns: Investigators find an open notebook with credentials beside a compromised desktop. What immediate custody or scene safeguard matches this constraint?

  1. Request an authorized export and suspend scheduled overwrite of relevant footage
  2. Photograph the notebook's location relative to the workstation
  3. Restrict use or movement of the notebook and workstation together
  4. Package the notebook as a separate labeled exhibit after documentation

Explanation

Correct Answer

C:

Protecting both artifacts preserves the relationship of physical and digital evidence; the immediate evidence or scene safeguard follows from how associated physical context should be preserved; additional acquisition requires separate authorization.

Incorrect Answers

A:

Preserving a copy protects the incident timeline without altering source devices unnecessarily; the other incident centers on what time-sensitive contextual evidence exists, not this immediate evidence protection question about how associated physical context should be preserved.

B:

Position and visible pages may explain access without requiring casual handling; the goal is immediate evidence protection for how associated physical context should be preserved. Investigation alone does not control current conditions.

D:

Separate tracking protects provenance while maintaining the association; the case needs immediate evidence protection addressing how associated physical context should be preserved; corrective follow-through follows initial protection.

Question 264

During lessons learned, the security owner reviews this completed incident: A laptop evidence drive is transported without anti-static protection and later fails to mount. Which repeatable safeguard best prevents this failure mode in the future?

  1. Document damage and use specialized recovery without altering originals
  2. Review packaging material, shock exposure and condition at each transfer
  3. Train custodians on media-specific packaging and environmental controls
  4. Include non-electronic evidence specialists in response contacts

Explanation

Correct Answer

C:

Correct materials reduce avoidable loss during transport; the assurance measure is designed around whether packaging protected fragile electronic components, rather than hiding the reported activity.

Incorrect Answers

A:

Condition changes and recovery methods must be disclosed; the case needs custody-procedure prevention addressing whether packaging protected fragile electronic components; case recovery is not future-risk control.

B:

Improper transport can damage hardware and compromise recoverability; when judging whether packaging protected fragile electronic components, an investigation is not recurrence prevention; this is instead scene or evidence validation.

D:

Mixed physical and digital incidents need appropriate handling expertise; this serves whether packaging will accelerate physical degradation, whereas the requested result is custody-procedure prevention involving whether packaging protected fragile electronic components.

Question 265

The immediate risk must be managed. The response record describes: Security monitoring sees an unsigned PowerShell process spawning from a downloaded Office document. Which intervention is most effective before full eradication or restoration?

  1. Correlate Office process ancestry with PowerShell command-line and script block logs
  2. Suspend the malicious process tree and isolate the endpoint for collection
  3. Harden Office child-process restrictions and PowerShell telemetry
  4. Disable the suspect task and block its remote script endpoint
  5. Revoke the unauthorized remote session and isolate its affected host
  6. Remove the malicious document and persistence and check secondary payloads

Explanation

Correct Answer

B:

Targeted interruption limits payload activity while retaining execution history; this reduces current exposure associated with whether a document triggered script-based malware and permits later corrective work.

Incorrect Answers

A:

Parent-child and script evidence connect the document action to execution; the requirement concerns whether a document triggered script-based malware, so investigation alone does not control current conditions.

C:

Application controls reduce this common execution chain; prevention cannot replace immediate action in the decision about whether a document triggered script-based malware.

D:

Stopping both trigger and delivery path limits execution; the relevant condition for that step is which persistence artifact causes recurring execution, which is not shown for whether a document triggered script-based malware.

E:

Containing the access channel disrupts abuse even when binaries are legitimate; this serves whether living-off-the-land execution masks malicious behavior, whereas the requested result is initial containment or preservation involving whether a document triggered script-based malware.

F:

The first script may only download or launch further components; for whether a document triggered script-based malware, corrective follow-through follows initial protection; initial containment or preservation remains necessary.

Question 266

Responders are preparing to reinstate operations after this situation: An organization discovers that endpoint alerts are retained for only a day despite frequent weekend outages. What should be corrected before technical closure of the incident?

  1. Validate approved images and vendor-assisted restoration in a test environment
  2. Establish adequate retention with access controls and retrieval tests
  3. Review EDR event retention, log export and investigation access settings
  4. Forward critical endpoint events to protected central storage immediately
  5. Test weekend investigation scenarios and evidence retrieval deadlines

Explanation

Correct Answer

B:

Retention must support actual investigation windows and response obligations; the change should be tested before unrestricted operations resume for the event involving whether malware telemetry will survive delayed discovery.

Incorrect Answers

A:

Supported recovery protects safety-critical integrations rather than improvising reinstallation; this serves whether malware response preparation covers critical medical endpoints, whereas the requested result is trusted restoration involving whether malware telemetry will survive delayed discovery.

C:

Insufficient history can hide the initial payload and lateral movement; when judging whether malware telemetry will survive delayed discovery, verification is not the corrective step; this is instead evidence validation.

D:

Off-host records remain available if an infected endpoint is wiped; for whether malware telemetry will survive delayed discovery, temporary protection does not complete correction; trusted restoration remains necessary.

E:

Preparedness should reflect realistic detection latency; the requirement concerns whether malware telemetry will survive delayed discovery, so future hardening is not current-state recovery.

Question 267

A case is escalated for independent verification after this finding: A malware outbreak spreads by portable media in a manufacturing facility with limited network connectivity. What collection or comparison would validate the reported condition?

  1. Correlate file rename bursts with the initiating process and SMB session
  2. Quarantine suspect removable drives and restrict new removable-media mounts
  3. Scan and rebuild affected endpoints and sanitize or retire contaminated media
  4. Use controlled media transfer stations and removable-device policies
  5. Correlate USB insertion logs with first execution time on each affected station

Explanation

Correct Answer

E:

Device-use chronology can link a shared medium to infection; this evidence is scoped to whether removable media caused repeated reinfections, not a generic system-health reading.

Incorrect Answers

A:

Identifying the source host helps stop active write activity; it is meant to address which containment step stops ongoing encryption, not evidence validation for whether removable media caused repeated reinfections.

B:

Physical medium control prevents another host from receiving the payload; the requirement concerns whether removable media caused repeated reinfections, so immediate protection does not substantiate findings.

C:

Cleanup must cover both endpoints and the transport vehicle; the goal is evidence validation for whether removable media caused repeated reinfections. Recovery is not factual verification.

D:

Air-gapped operations still require ingress controls; prevention is not incident verification in the decision about whether removable media caused repeated reinfections.

Question 268

The team needs temporary protection and must retain evidence. The observed event is: Memory scanning reveals injected code in a legitimate browser process although no malicious file exists on disk. What narrowly scoped action would best control the immediate risk?

  1. Isolate the host and suspend suspicious injected activity under forensic procedures
  2. Monitor remote thread creation and anomalous process-memory access
  3. Investigate the injector and persistence mechanism before rebuilding the endpoint
  4. Capture process memory, memory maps and injection-related events
  5. Isolate the host's outbound traffic and preserve relevant DNS telemetry

Explanation

Correct Answer

A:

The active process may still communicate even with a clean disk scan; it restricts the path implicated in whether in-memory execution explains the alert; later eradication and restoration remain separate decisions.

Incorrect Answers

B:

Behavioral telemetry can detect fileless injection; the requirement concerns whether in-memory execution explains the alert, so prevention cannot replace immediate action.

C:

A clean browser executable does not exclude compromise in the process tree; the goal is initial containment or preservation for whether in-memory execution explains the alert. Corrective follow-through follows initial protection.

D:

Runtime evidence can reveal payloads invisible to file-only scanning; investigation alone does not control current conditions in the decision about whether in-memory execution explains the alert.

E:

The block curbs command retrieval while retaining host evidence; the relevant condition for that step is whether the host exhibits domain-generation command traffic, which is not shown for whether in-memory execution explains the alert.

Question 269

During lessons learned, the security owner reviews this completed incident: An endpoint shows a new kernel driver shortly before security agents begin failing. Which repeatable safeguard best prevents this failure mode in the future?

  1. Enforce driver-signing policies and restrict driver installation privileges
  2. Inspect driver-load events, signature status and kernel integrity indicators
  3. Monitor remote thread creation and anomalous process-memory access
  4. Rebuild from trusted media and verify firmware and driver integrity as warranted

Explanation

Correct Answer

A:

Preventive controls limit unauthorized kernel code execution; the control owner can test whether this reduces repeat conditions affecting whether low-level tampering explains sensor loss.

Incorrect Answers

B:

A suspicious driver can interfere with EDR visibility and operating-system protections; the goal is recurrence prevention for whether low-level tampering explains sensor loss. An investigation is not recurrence prevention.

C:

Behavioral telemetry can detect fileless injection; it is meant to address whether in-memory execution explains the alert, not recurrence prevention for whether low-level tampering explains sensor loss.

D:

Deep compromise may leave artifacts beyond an ordinary file quarantine; the case needs recurrence prevention addressing whether low-level tampering explains sensor loss; case recovery is not future-risk control.

Question 270

A containment decision is required for this incident: A rebuilt endpoint is immediately rejoined to an identity domain where its machine credentials are suspected stolen. What action constrains the incident at the affected point of control?

  1. Do not reconnect the restored image until it is investigated in isolation
  2. Tie reimaging playbooks to credential and certificate reissuance checks
  3. Review machine-account activity and authentication anomalies during compromise
  4. Keep the rebuilt device out of privileged network segments until identity trust is reset
  5. Rotate machine credentials and validate domain enrollment under approved procedure

Explanation

Correct Answer

D:

Network gating limits re-entry while identity risk remains; it protects the affected workflow while investigators continue resolving whether endpoint trust is safe to restore.

Incorrect Answers

A:

A latent backdoor can reactivate on an apparently recovered server; that method could help with whether a backup predates attacker persistence; the initial containment or preservation decision here involves whether endpoint trust is safe to restore.

B:

Integrated recovery prevents old credentials from surviving the rebuild; the requirement concerns whether endpoint trust is safe to restore, so prevention cannot replace immediate action.

C:

A clean disk does not automatically repair exposed identity secrets; the goal is initial containment or preservation for whether endpoint trust is safe to restore. Investigation alone does not control current conditions.

E:

Trust restoration must address the identity plane as well as local files; the case needs initial containment or preservation addressing whether endpoint trust is safe to restore; corrective follow-through follows initial protection.

EC-Council Certified Incident Handler (212-89) Practice Tests