ECCouncil 212-89 (EC-Council Certified Incident Handler) Practice Test 116

Question 1150

Before making any disruptive change, an investigator is handed these observations: Hundreds of identical smart meters share the same embedded administrative secret. Which source best supports the incident finding before responders modify the environment?

  1. Inventory firmware identities and validate the shared credential design
  2. Restrict administrative network reachability while planning credential changes
  3. Require per-device credentials and secure provisioning contracts
  4. Compare firmware version and signature with vendor release records and flow logs

Explanation

Correct Answer

A:

One leaked secret could enable access to many devices; for this investigation, the relevant uncertainty is whether common embedded credentials amplify compromise, so independent confirmation matters.

Incorrect Answers

B:

Segment-level containment reduces fleet-wide abuse; when judging whether common embedded credentials amplify compromise, immediate protection does not substantiate findings; this is instead initial containment or preservation.

C:

Fleet identity design prevents single-secret compromise; for whether common embedded credentials amplify compromise, prevention is not incident verification; evidence validation remains necessary.

D:

An unexpected firmware build can change device behavior and external communication; this serves whether firmware integrity or destination was altered, whereas the requested result is evidence validation involving whether common embedded credentials amplify compromise.

Question 1151

Before granting routine access again, the team reviews this case: An IoT sensor remains reachable over a legacy Telnet service used only during installation. What must the response owner validate as part of safe recovery?

  1. Move maintenance to a supported secure management interface and audit access
  2. Disable or firewall Telnet access through approved device controls
  3. Require secure-by-default device commissioning checklists
  4. Upgrade supported firmware and validate camera configuration after compromise review

Explanation

Correct Answer

A:

Recovery removes the unsafe legacy path; it is the corrective action needed for whether an unnecessary remote service exposes device control after the immediate hazard is controlled.

Incorrect Answers

B:

Service containment limits remote command entry; for whether an unnecessary remote service exposes device control, temporary protection does not complete correction; trusted restoration remains necessary.

C:

Hardening at install time prevents dormant weaknesses; the requirement concerns whether an unnecessary remote service exposes device control, so future hardening is not current-state recovery.

D:

Recovery must address both access and possible persistent settings; this serves whether weak device identity enabled unauthorized access, whereas the requested result is trusted restoration involving whether an unnecessary remote service exposes device control.

Question 1152

Active first response is underway for the following condition: An industrial HMI shows unauthorized setpoint changes while the process is operating near a safety threshold. What is the most appropriate short-term restriction or first-response decision?

  1. Restore approved setpoints and verify process stability with authorized operators
  2. Use change approval, role segregation and process anomaly detection
  3. Correlate HMI commands, controller events and process telemetry with OT operators
  4. Restrict engineering protocol writes from the suspect station under OT change control
  5. Follow site safety procedures and coordinate any network isolation with control engineers

Explanation

Correct Answer

E:

Unplanned shutdown can create greater physical danger; it protects the affected workflow while investigators continue resolving whether physical process safety is at risk.

Incorrect Answers

A:

Recovery needs physical-state validation beyond software scans; the requirement concerns whether physical process safety is at risk, so corrective follow-through follows initial protection.

B:

Safety-aware controls detect unauthorized setpoint modifications; the goal is initial containment or preservation for whether physical process safety is at risk. Prevention cannot replace immediate action.

C:

Cyber observations must be interpreted against real equipment conditions; investigation alone does not control current conditions in the decision about whether physical process safety is at risk.

D:

Write-path containment protects controller logic while preserving monitoring; the relevant condition for that step is whether a nonengineering station initiated controller changes, which is not shown for whether physical process safety is at risk.

Question 1153

While full remediation remains pending, the commander receives this incident report: An EDR alert shows a suspicious executable launched by a legitimate remote administration utility. Which first protective measure directly limits the situation without assuming cleanup is finished?

  1. Restrict the suspicious process while preserving relevant telemetry
  2. Revoke unauthorized remote sessions and isolate the affected host
  3. Remove the launched payload, verify the support agent and restrict permitted child execution
  4. Correlate remote session identity, process tree and execution time

Explanation

Correct Answer

B:

Access-path containment is essential beyond blocking one file; the scope of this restriction follows whether a remote-management tool was abused rather than indiscriminately changing unrelated assets.

Incorrect Answers

A:

Targeted action limits risk during validation; it is meant to address what corroborates suspicious endpoint execution, not initial containment or preservation for whether a remote-management tool was abused.

C:

Trusted agent state and restricted child processes prevent the sanctioned tool from silently relaunching the same payload; for whether a remote-management tool was abused, corrective follow-through follows initial protection; initial containment or preservation remains necessary.

D:

A legitimate support binary can still start attacker-controlled commands; the requirement concerns whether a remote-management tool was abused, so investigation alone does not control current conditions.

Question 1154

Post-containment analysis identified this issue for correction: A workstation generates an alert for a binary launched from a temporary folder, but the analyst has only its file name. Which remediation is supported by the observed root-cause conditions?

  1. Restrict the suspicious process while preserving relevant telemetry
  2. Investigate credential material exposure, rotate accounts and remove tooling
  3. Use behavior-based EDR detections with process ancestry
  4. Inspect file hash, signer, parent process and command-line context
  5. Analyze the artifact and remove persistence if compromise is confirmed

Explanation

Correct Answer

E:

A defensible outcome follows evidence rather than filename alone; the owner can validate the correction against the evidence bearing on what corroborates suspicious endpoint execution.

Incorrect Answers

A:

Targeted action limits risk during validation; for what corroborates suspicious endpoint execution, temporary protection does not complete correction; trusted restoration remains necessary.

B:

Recovery must consider identity compromise even if the process exits; the activity targets whether credential dumping was attempted; trusted restoration here concerns what corroborates suspicious endpoint execution.

C:

Context improves endpoint triage precision; the goal is trusted restoration for what corroborates suspicious endpoint execution. Future hardening is not current-state recovery.

D:

Name or location alone is insufficient to prove malicious execution; verification is not the corrective step in the decision about what corroborates suspicious endpoint execution.

Question 1155

During lessons learned, the security owner reviews this completed incident: An endpoint reports unusual LSASS memory access by a non-security process after a phishing click. Which repeatable safeguard best prevents this failure mode in the future?

  1. Correlate process access telemetry, privileges and executable provenance
  2. Use protected credential features and detect sensitive process access
  3. Restrict driver installation and monitor kernel integrity changes
  4. Investigate credential material exposure, rotate accounts and remove tooling

Explanation

Correct Answer

B:

Memory access controls reduce credential-dumping opportunities; it closes a repeatable gap revealed by whether credential dumping was attempted without removing useful monitoring.

Incorrect Answers

A:

Unexpected access to the authentication process can indicate credential theft; the case needs recurrence prevention addressing whether credential dumping was attempted; an investigation is not recurrence prevention.

C:

Lower privilege and visibility reduce tampering opportunities; it is meant to address whether kernel-level changes caused endpoint sensor loss, not recurrence prevention for whether credential dumping was attempted.

D:

Recovery must consider identity compromise even if the process exits; the requirement concerns whether credential dumping was attempted, so case recovery is not future-risk control.

Question 1156

A control owner is preparing preventive actions after observing: A warehouse IoT gateway is repeatedly rebooting after malformed management traffic from an unknown segment. What tested hardening or process measure follows from the lessons learned?

  1. Segment device management and patch vulnerable network services
  2. Update supported firmware and validate stable gateway communication
  3. Correlate gateway crash logs, source flows and management parser errors
  4. Require signed firmware and approved update management for IoT assets

Explanation

Correct Answer

A:

Reduced reachability limits exploitation; the ongoing control is targeted at whether malicious management requests cause availability loss, rather than a one-time emergency fix.

Incorrect Answers

B:

Recovery should remove the exposed fault condition; for whether malicious management requests cause availability loss, case recovery is not future-risk control; recurrence prevention remains necessary.

C:

Timing and input patterns can link traffic to service instability; the requirement concerns whether malicious management requests cause availability loss, so an investigation is not recurrence prevention.

D:

Firmware provenance reduces supply-chain and unauthorized changes; this serves whether firmware integrity or destination was altered, whereas the requested result is recurrence prevention involving whether malicious management requests cause availability loss.

Question 1157

A long-term control assessment uses this recent event: An iPhone user accepts an untrusted mobile configuration profile that adds a suspicious VPN and root certificate. Which change provides measurable prevention rather than an emergency workaround?

  1. Re-establish trusted configuration and inspect for possible intercepted accounts
  2. Inspect installed profiles, certificate trust and VPN routing configuration
  3. Control app installation sources and monitor high-risk permission grants
  4. Use managed configuration profile controls and certificate governance

Explanation

Correct Answer

D:

Approved enrollment prevents silent network trust changes; the assurance measure is designed around whether configuration profiles redirect or intercept traffic, rather than hiding the reported activity.

Incorrect Answers

A:

Recovery should treat redirected sensitive traffic as a possible disclosure; the goal is recurrence prevention for whether configuration profiles redirect or intercept traffic. Case recovery is not future-risk control.

B:

Unapproved profiles can alter both traffic paths and trusted certificate authorities; an investigation is not recurrence prevention in the decision about whether configuration profiles redirect or intercept traffic.

C:

Permission governance reduces mobile spyware exposure; that method could help with whether abuse of accessibility services is occurring; the recurrence prevention decision here involves whether configuration profiles redirect or intercept traffic.

Question 1158

The team wants a measurable hardening change following this situation: An endpoint agent identifies an unusual persistence service but its parent installer is an approved device management package. What improvement best addresses the root weakness in a future incident?

  1. Verify installer signatures, deployment manifest and service command path
  2. Document the disposition and tune detection to the approved deployment identity
  3. Maintain release-aware allowlisting with expiration and review
  4. Maintain signed package inventory and change-aware endpoint detections

Explanation

Correct Answer

D:

Context reduces incorrect persistence alerts; a periodic review of this safeguard can track the risk described by whether the service change is authorized.

Incorrect Answers

A:

A suspicious-looking service can be legitimate if trusted release evidence corroborates it; the requirement concerns whether the service change is authorized, so an investigation is not recurrence prevention.

B:

Accurate closure retains visibility for future malicious variants; the goal is recurrence prevention for whether the service change is authorized. Case recovery is not future-risk control.

C:

Controlled exception lifecycles reduce recurring alerts; the other incident centers on whether the alert is a benign software change, not this recurrence prevention question about whether the service change is authorized.

Question 1159

Before granting routine access again, the team reviews this case: A managed phone is reported stolen while corporate email remains synchronized and device state is uncertain. What must the response owner validate as part of safe recovery?

  1. Rotate relevant credentials and re-enroll a replacement under policy
  2. Enforce screen lock, encryption and rapid lost-device reporting
  3. Issue an authorized remote lock or wipe as policy permits and revoke sessions
  4. Assess data access and re-enroll or rebuild the device if integrity is uncertain

Explanation

Correct Answer

A:

Restoring safe mobility requires verified device identity; it is the corrective action needed for whether a lost mobile device can access enterprise mail after the immediate hazard is controlled.

Incorrect Answers

B:

Baseline controls reduce physical-loss exposure; for whether a lost mobile device can access enterprise mail, future hardening is not current-state recovery; trusted restoration remains necessary.

C:

Identity and device controls complement each other for offline devices; the requirement concerns whether a lost mobile device can access enterprise mail, so temporary protection does not complete correction.

D:

Recovery verifies that an external host did not alter the mobile environment; the activity targets whether debugging exposes the managed device; trusted restoration here concerns whether a lost mobile device can access enterprise mail.

Question 1160

The recurrence-prevention decision is based on this report: A desktop triggers a false positive on a signed internal updater after a new security policy rollout. What measure strengthens readiness against the observed event?

  1. Maintain release-aware allowlisting with expiration and review
  2. Check signer, release manifest, deployment schedule and process actions
  3. Tune the specific rule and document tested expected execution
  4. Maintain signed package inventory and change-aware endpoint detections

Explanation

Correct Answer

A:

Controlled exception lifecycles reduce recurring alerts; the ongoing control is targeted at whether the alert is a benign software change, rather than a one-time emergency fix.

Incorrect Answers

B:

Authenticity and expected behavior can support a false-positive conclusion; the goal is recurrence prevention for whether the alert is a benign software change. An investigation is not recurrence prevention.

C:

Recovery restores normal updates without sacrificing coverage; case recovery is not future-risk control in the decision about whether the alert is a benign software change.

D:

Context reduces incorrect persistence alerts; that method could help with whether the service change is authorized; the recurrence prevention decision here involves whether the alert is a benign software change.

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