ECCouncil 312-49v11 (Computer Hacking Forensic Investigator) Practice Test 2

Question 10

A forensic inquiry ends with evidence gaps and corrective recommendations. Which final activity checks whether investigative questions were answered?

  1. Case closure review
  2. Incident containment
  3. Incident scoping
  4. Evidence preservation
  5. Attribution assessment

Explanation

Correct Answer

A:

Closure review maps findings to the original scope, records limitations, verifies custody documentation, and captures lessons. Declaring victory before unresolved questions are disclosed weakens the record.

Incorrect Answers

B:

The objective here is whether the investigation met its original objectives; containment limits ongoing exposure, for example with controlled network isolation, while coordinating evidence capture; the option would instead inform ongoing malicious communications. It is a response action and not a substitute for establishing historical facts; it is not direct evidence of whether the investigation met its original objectives.

C:

For a separate investigation of the affected systems and investigative boundaries, scoping identifies affected assets, time interval, stakeholders, and authorized investigative questions before collection expands; that is not the determination of whether the investigation met its original objectives in the stem. It prevents unfocused acquisition and makes evidence needs defensible; the evidence still must speak to whether the investigation met its original objectives.

D:

With whether the investigation met its original objectives as the investigative issue, preservation protects original evidence from avoidable change by using documented, suitable collection and controlled examination methods; the result would concern the original state of digital material. Direct exploratory activity can alter metadata or volatile state; this would not resolve whether the investigation met its original objectives.

E:

For questions about the likely responsible actor, attribution evaluates multiple independent behavioral, infrastructure, and account clues; that differs from whether the investigation met its original objectives. A single sender address or IP is insufficient to identify a person with confidence; it provides no direct answer to whether the investigation met its original objectives.

Question 11

The finance department paid a fraudulent invoice after a vendor conversation was impersonated without a malicious attachment. Which crime pattern fits?

  1. Credential stuffing
  2. Cryptojacking
  3. Data tampering
  4. Business email compromise

Explanation

Correct Answer

D:

Business email compromise relies on impersonation and social engineering to redirect payments or sensitive information. The investigator should examine conversation history and payment instructions.

Incorrect Answers

A:

In work concerning reused credentials being tested broadly, credential stuffing tests credentials obtained elsewhere against another service, often at scale; the operation would not resolve a payment diversion through impersonated correspondence. It differs from guessing entirely new password combinations for one account; the distinction leaves a payment diversion through impersonated correspondence unsettled.

B:

A case involving unauthorized cryptocurrency mining activity might use this approach: cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts; the required result here is a payment diversion through impersonated correspondence. Network pool traffic and execution artifacts help corroborate it; it cannot replace proof about a payment diversion through impersonated correspondence.

C:

The required finding is about a payment diversion through impersonated correspondence; data tampering undermines information integrity by changing records or calculations; this addresses the separate concern of unauthorized modification of business records. Audit trails and before/after values are more relevant than indicators of data exfiltration; it does not by itself answer a payment diversion through impersonated correspondence.

Question 12

A customer portal shows large numbers of login attempts with reused username/password pairs across accounts. Which attack class best describes the pattern?

  1. Business email compromise
  2. Data tampering
  3. Credential stuffing
  4. Ransomware extortion

Explanation

Correct Answer

C:

Credential stuffing tests credentials obtained elsewhere against another service, often at scale. It differs from guessing entirely new password combinations for one account.

Incorrect Answers

A:

In an inquiry concerning a payment diversion through impersonated correspondence, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; the scope does not extend to reused credentials being tested broadly. The investigator should examine conversation history and payment instructions; that issue cannot settle reused credentials being tested broadly.

B:

Even though the scenario needs reused credentials being tested broadly, data tampering undermines information integrity by changing records or calculations; the action relates to unauthorized modification of business records. Audit trails and before/after values are more relevant than indicators of data exfiltration; this remains insufficient for reused credentials being tested broadly.

D:

The objective here is reused credentials being tested broadly; double-extortion ransomware couples service disruption with threatened release of stolen information; the option would instead inform encryption combined with data-leak threats. Evidence collection should separately establish encryption, access and outbound transfer; it is not direct evidence of reused credentials being tested broadly.

Question 13

Authentication logs show a single common password tried against hundreds of employee accounts during a short interval. Which technique is most likely?

  1. Password spraying
  2. Credential stuffing
  3. Account takeover
  4. Ransomware extortion

Explanation

Correct Answer

A:

Password spraying distributes a small password set across many identities, limiting repeated failures on one account. That distribution distinguishes it from a focused brute-force attack.

Incorrect Answers

B:

Instead of a method addressing one candidate password across many identities, credential stuffing tests credentials obtained elsewhere against another service, often at scale; this one concerns reused credentials being tested broadly. It differs from guessing entirely new password combinations for one account; it cannot independently determine one candidate password across many identities.

C:

In work concerning unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the operation would not resolve one candidate password across many identities. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; the distinction leaves one candidate password across many identities unsettled.

D:

A case involving encryption combined with data-leak threats might use this approach: double-extortion ransomware couples service disruption with threatened release of stolen information; the required result here is one candidate password across many identities. Evidence collection should separately establish encryption, access and outbound transfer; it cannot replace proof about one candidate password across many identities.

Question 14

A privileged staff member legitimately entered the document system but exported records outside the approved role. Which threat category applies?

  1. Data tampering
  2. Insider misuse
  3. Account takeover
  4. Cryptojacking

Explanation

Correct Answer

B:

Insider misuse involves authorized access that is used in an unauthorized way. The investigation must compare privileges and approved purpose with actual activity.

Incorrect Answers

A:

When the investigative task is unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; that differs from the question about misuse of otherwise legitimate access. Audit trails and before/after values are more relevant than indicators of data exfiltration; that leaves misuse of otherwise legitimate access unresolved.

C:

In an inquiry concerning unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the scope does not extend to misuse of otherwise legitimate access. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; that issue cannot settle misuse of otherwise legitimate access.

D:

Even though the scenario needs misuse of otherwise legitimate access, cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts; the action relates to unauthorized cryptocurrency mining activity. Network pool traffic and execution artifacts help corroborate it; this remains insufficient for misuse of otherwise legitimate access.

Question 15

An intrusion combines data exfiltration with encryption and a demand not to publish stolen files. Which crime pattern is shown?

  1. Business email compromise
  2. Ransomware extortion
  3. DDoS extortion
  4. Supply-chain compromise

Explanation

Correct Answer

B:

Double-extortion ransomware couples service disruption with threatened release of stolen information. Evidence collection should separately establish encryption, access and outbound transfer.

Incorrect Answers

A:

With encryption combined with data-leak threats as the investigative issue, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; the result would concern a payment diversion through impersonated correspondence. The investigator should examine conversation history and payment instructions; this would not resolve encryption combined with data-leak threats.

C:

The stem asks about encryption combined with data-leak threats; distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the described operation is used for a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; a determination about encryption combined with data-leak threats requires other support.

D:

Instead of a method addressing encryption combined with data-leak threats, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; this one concerns multiple victims infected through one trusted update. Update provenance and signing-chain history become central evidence; it cannot independently determine encryption combined with data-leak threats.

Question 16

A storefront is flooded by distributed traffic after receiving a payment demand to stop the flood. Which crime type is evident?

  1. Password spraying
  2. Supply-chain compromise
  3. Business email compromise
  4. DDoS extortion

Explanation

Correct Answer

D:

Distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage. Origin and bot participation require traffic analysis, not merely payment evidence.

Incorrect Answers

A:

Although the case asks about a traffic flood used to demand payment, password spraying distributes a small password set across many identities, limiting repeated failures on one account; the action instead concerns one candidate password across many identities. That distribution distinguishes it from a focused brute-force attack; it does not establish a traffic flood used to demand payment.

B:

For an analysis centered on multiple victims infected through one trusted update, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; the present need is a traffic flood used to demand payment. Update provenance and signing-chain history become central evidence; a different finding about a traffic flood used to demand payment is still needed.

C:

When the investigative task is a payment diversion through impersonated correspondence, business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; that differs from the question about a traffic flood used to demand payment. The investigator should examine conversation history and payment instructions; that leaves a traffic flood used to demand payment unresolved.

Question 17

Several customers are infected immediately after installing an apparently legitimate update from a trusted vendor. Which intrusion pattern fits?

  1. DDoS extortion
  2. Account takeover
  3. Ransomware extortion
  4. Supply-chain compromise

Explanation

Correct Answer

D:

A supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims. Update provenance and signing-chain history become central evidence.

Incorrect Answers

A:

The objective here is multiple victims infected through one trusted update; distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the option would instead inform a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; it is not direct evidence of multiple victims infected through one trusted update.

B:

For a separate investigation of unauthorized control of a legitimate identity, account takeover occurs when an unauthorized actor gains operational control over someone else's account; that is not the determination of multiple victims infected through one trusted update in the stem. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; the evidence still must speak to multiple victims infected through one trusted update.

C:

With multiple victims infected through one trusted update as the investigative issue, double-extortion ransomware couples service disruption with threatened release of stolen information; the result would concern encryption combined with data-leak threats. Evidence collection should separately establish encryption, access and outbound transfer; this would not resolve multiple victims infected through one trusted update.

Question 18

A warehouse application's quantities were altered without authorization, but files were neither stolen nor encrypted. Which class of harm occurred?

  1. DDoS extortion
  2. Business email compromise
  3. Account takeover
  4. Data tampering

Explanation

Correct Answer

D:

Data tampering undermines information integrity by changing records or calculations. Audit trails and before/after values are more relevant than indicators of data exfiltration.

Incorrect Answers

A:

A case involving a traffic flood used to demand payment might use this approach: distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the required result here is unauthorized modification of business records. Origin and bot participation require traffic analysis, not merely payment evidence; it cannot replace proof about unauthorized modification of business records.

B:

The required finding is about unauthorized modification of business records; business email compromise relies on impersonation and social engineering to redirect payments or sensitive information; this addresses the separate concern of a payment diversion through impersonated correspondence. The investigator should examine conversation history and payment instructions; it does not by itself answer unauthorized modification of business records.

C:

Although the case asks about unauthorized modification of business records, account takeover occurs when an unauthorized actor gains operational control over someone else's account; the action instead concerns unauthorized control of a legitimate identity. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message; it does not establish unauthorized modification of business records.

Question 19

Endpoints exhibit sustained processor use and unauthorized mining pool communications, without destructive encryption. Which abuse does this indicate?

  1. DDoS extortion
  2. Cryptojacking
  3. Credential stuffing
  4. Data tampering

Explanation

Correct Answer

B:

Cryptojacking hijacks computing resources for cryptocurrency mining, frequently through unauthorized processes or browser scripts. Network pool traffic and execution artifacts help corroborate it.

Incorrect Answers

A:

Even though the scenario needs unauthorized cryptocurrency mining activity, distributed denial-of-service extortion attempts to overwhelm availability while using disruption as leverage; the action relates to a traffic flood used to demand payment. Origin and bot participation require traffic analysis, not merely payment evidence; this remains insufficient for unauthorized cryptocurrency mining activity.

C:

The objective here is unauthorized cryptocurrency mining activity; credential stuffing tests credentials obtained elsewhere against another service, often at scale; the option would instead inform reused credentials being tested broadly. It differs from guessing entirely new password combinations for one account; it is not direct evidence of unauthorized cryptocurrency mining activity.

D:

For a separate investigation of unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; that is not the determination of unauthorized cryptocurrency mining activity in the stem. Audit trails and before/after values are more relevant than indicators of data exfiltration; the evidence still must speak to unauthorized cryptocurrency mining activity.

Question 20

A legitimate customer account changes recovery methods and sends unusual messages following a suspicious login. Which outcome is under investigation?

  1. Supply-chain compromise
  2. Data tampering
  3. Password spraying
  4. Account takeover

Explanation

Correct Answer

D:

Account takeover occurs when an unauthorized actor gains operational control over someone else's account. Session, recovery-factor, and identity-provider evidence can distinguish it from a forged message.

Incorrect Answers

A:

Instead of a method addressing unauthorized control of a legitimate identity, a supply-chain attack abuses an upstream dependency, distribution process, or trusted provider to reach downstream victims; this one concerns multiple victims infected through one trusted update. Update provenance and signing-chain history become central evidence; it cannot independently determine unauthorized control of a legitimate identity.

B:

In work concerning unauthorized modification of business records, data tampering undermines information integrity by changing records or calculations; the operation would not resolve unauthorized control of a legitimate identity. Audit trails and before/after values are more relevant than indicators of data exfiltration; the distinction leaves unauthorized control of a legitimate identity unsettled.

C:

A case involving one candidate password across many identities might use this approach: password spraying distributes a small password set across many identities, limiting repeated failures on one account; the required result here is unauthorized control of a legitimate identity. That distribution distinguishes it from a focused brute-force attack; it cannot replace proof about unauthorized control of a legitimate identity.

Computer Hacking Forensic Investigator (312-49v11) Practice Tests