ECCouncil 312-49v11 (Computer Hacking Forensic Investigator) Practice Test 3

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.

Question 21

A laptop may have launched an unknown executable before network access began. Which source is best for process execution context?

  1. DHCP lease records
  2. Database audit trail
  3. Endpoint telemetry
  4. Identity-provider audit logs

Explanation

Correct Answer

C:

Endpoint telemetry can record process launches, parent processes, command lines and associated security events where collection was enabled. It gives host behavior missing from perimeter logs.

Incorrect Answers

A:

The current inquiry asks about local process execution history; DHCP records can map assignment times, IP addresses and client identifiers; this mechanism chiefly addresses the device associated with a changing IP address. Correlation with switch or endpoint records may still be needed to establish a user; it cannot prove local process execution history on its own.

B:

In an inquiry concerning a change performed inside the database, database auditing can document statements, object access, principals and execution time at the data layer; the scope does not extend to local process execution history. Web access logs lack this detailed database operation context; that issue cannot settle local process execution history.

D:

For the separate question of the actor behind a role-assignment change, identity-platform audit logs can capture directory administrative changes, actor identity, target, and time; the requested assessment of local process execution history remains open. Sign-in records alone are not sufficient to prove the configuration action; there is no direct finding about local process execution history.

Question 22

Investigators have a short-lived private IP address and an unusual DNS lookup. Which TWO sources respectively link the IP to a leased device and show the requested domain name at the incident time? Choose TWO.

  1. Cloud control-plane logs
  2. Firewall connection logs
  3. Backup snapshot
  4. Proxy transaction logs
  5. DHCP lease records
  6. DNS resolver logs

Explanation

Correct Answers

E:

In this combined inquiry, DHCP records can map assignment times, IP addresses and client identifiers; correlation with switch or endpoint records may still be needed to establish a user. This addresses the device associated with a changing IP address.

F:

In this combined inquiry, resolver logs can identify queries, clients and returned answers when logging is configured; they provide name-resolution context but do not prove a later application session occurred. This addresses requested domains and DNS responses.

Incorrect Answers

A:

For questions about an API-driven infrastructure change, Cloud control-plane activity logs track resource-management operations and identities, subject to service and retention settings; that differs from both requested domains and DNS responses and the device associated with a changing IP address. Guest OS logs generally cannot prove who modified cloud resource metadata; it provides no direct answer to both requested domains and DNS responses and the device associated with a changing IP address.

B:

The stem asks about both requested domains and DNS responses and the device associated with a changing IP address; firewall connection logs record permitted or denied flows and interface or rule context; the described operation is used for whether network connections were allowed. They may not contain application payloads or user actions on the destination host; a determination about both requested domains and DNS responses and the device associated with a changing IP address requires other support.

C:

Instead of a method addressing both requested domains and DNS responses and the device associated with a changing IP address, a retained backup or snapshot can supply an earlier state if its timestamp and integrity are verified; this one concerns earlier data state before suspected alteration. It is not automatically complete evidence of events between recovery points; it cannot independently determine both requested domains and DNS responses and the device associated with a changing IP address.

D:

In work concerning web requests handled by the gateway, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; the operation would not resolve both requested domains and DNS responses and the device associated with a changing IP address. Network packet headers alone often lack application-level URL detail; the distinction leaves both requested domains and DNS responses and the device associated with a changing IP address unsettled.

Question 23

A private IP is in a firewall alert, but host addressing changes daily. Which source links the address to a leased device around the event?

  1. Firewall connection logs
  2. Cloud control-plane logs
  3. Endpoint telemetry
  4. DHCP lease records

Explanation

Correct Answer

D:

DHCP records can map assignment times, IP addresses and client identifiers. Correlation with switch or endpoint records may still be needed to establish a user.

Incorrect Answers

A:

For an analysis centered on whether network connections were allowed, firewall connection logs record permitted or denied flows and interface or rule context; the present need is the device associated with a changing IP address. They may not contain application payloads or user actions on the destination host; a different finding about the device associated with a changing IP address is still needed.

B:

When the investigative task is an API-driven infrastructure change, Cloud control-plane activity logs track resource-management operations and identities, subject to service and retention settings; that differs from the question about the device associated with a changing IP address. Guest OS logs generally cannot prove who modified cloud resource metadata; that leaves the device associated with a changing IP address unresolved.

C:

The current inquiry asks about the device associated with a changing IP address; endpoint telemetry can record process launches, parent processes, command lines and associated security events where collection was enabled; this mechanism chiefly addresses local process execution history. It gives host behavior missing from perimeter logs; it cannot prove the device associated with a changing IP address on its own.

Question 24

Security staff need the URLs and response status codes requested through an organization's web gateway. Which evidence source is most suitable?

  1. Firewall connection logs
  2. Cloud control-plane logs
  3. Database audit trail
  4. Endpoint telemetry
  5. Backup snapshot
  6. Proxy transaction logs

Explanation

Correct Answer

F:

Proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration. Network packet headers alone often lack application-level URL detail.

Incorrect Answers

A:

For a separate investigation of whether network connections were allowed, firewall connection logs record permitted or denied flows and interface or rule context; that is not the determination of web requests handled by the gateway in the stem. They may not contain application payloads or user actions on the destination host; the evidence still must speak to web requests handled by the gateway.

B:

With web requests handled by the gateway as the investigative issue, Cloud control-plane activity logs track resource-management operations and identities, subject to service and retention settings; the result would concern an API-driven infrastructure change. Guest OS logs generally cannot prove who modified cloud resource metadata; this would not resolve web requests handled by the gateway.

C:

For questions about a change performed inside the database, database auditing can document statements, object access, principals and execution time at the data layer; that differs from web requests handled by the gateway. Web access logs lack this detailed database operation context; it provides no direct answer to web requests handled by the gateway.

D:

The stem asks about web requests handled by the gateway; endpoint telemetry can record process launches, parent processes, command lines and associated security events where collection was enabled; the described operation is used for local process execution history. It gives host behavior missing from perimeter logs; a determination about web requests handled by the gateway requires other support.

E:

Instead of a method addressing web requests handled by the gateway, a retained backup or snapshot can supply an earlier state if its timestamp and integrity are verified; this one concerns earlier data state before suspected alteration. It is not automatically complete evidence of events between recovery points; it cannot independently determine web requests handled by the gateway.

Question 25

An investigator wants the direction, port, and disposition of blocked lateral network connections. Which source should be reviewed?

  1. DHCP lease records
  2. Firewall connection logs
  3. Proxy transaction logs
  4. Packet capture

Explanation

Correct Answer

B:

Firewall connection logs record permitted or denied flows and interface or rule context. They may not contain application payloads or user actions on the destination host.

Incorrect Answers

A:

The required finding is about whether network connections were allowed; DHCP records can map assignment times, IP addresses and client identifiers; this addresses the separate concern of the device associated with a changing IP address. Correlation with switch or endpoint records may still be needed to establish a user; it does not by itself answer whether network connections were allowed.

C:

For an analysis centered on web requests handled by the gateway, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; the present need is whether network connections were allowed. Network packet headers alone often lack application-level URL detail; a different finding about whether network connections were allowed is still needed.

D:

When the investigative task is observed traffic bytes at a specific sensor, packet capture preserves observed frame or packet bytes and timing at a capture point; that differs from the question about whether network connections were allowed. Encryption and packet loss can limit application detail, but metadata remains examinable; that leaves whether network connections were allowed unresolved.

Question 26

A suspicious administrator role was assigned shortly before a cloud incident. Which source best establishes who changed the role?

  1. DNS resolver logs
  2. Database audit trail
  3. Identity-provider audit logs
  4. Endpoint telemetry
  5. Proxy transaction logs
  6. Firewall connection logs

Explanation

Correct Answer

C:

Identity-platform audit logs can capture directory administrative changes, actor identity, target, and time. Sign-in records alone are not sufficient to prove the configuration action.

Incorrect Answers

A:

For the separate question of requested domains and DNS responses, resolver logs can identify queries, clients and returned answers when logging is configured; the requested assessment of the actor behind a role-assignment change remains open. They provide name-resolution context but do not prove a later application session occurred; there is no direct finding about the actor behind a role-assignment change.

B:

The objective here is the actor behind a role-assignment change; database auditing can document statements, object access, principals and execution time at the data layer; the option would instead inform a change performed inside the database. Web access logs lack this detailed database operation context; it is not direct evidence of the actor behind a role-assignment change.

D:

With the actor behind a role-assignment change as the investigative issue, endpoint telemetry can record process launches, parent processes, command lines and associated security events where collection was enabled; the result would concern local process execution history. It gives host behavior missing from perimeter logs; this would not resolve the actor behind a role-assignment change.

E:

For questions about web requests handled by the gateway, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; that differs from the actor behind a role-assignment change. Network packet headers alone often lack application-level URL detail; it provides no direct answer to the actor behind a role-assignment change.

F:

The stem asks about the actor behind a role-assignment change; firewall connection logs record permitted or denied flows and interface or rule context; the described operation is used for whether network connections were allowed. They may not contain application payloads or user actions on the destination host; a determination about the actor behind a role-assignment change requires other support.

Question 27

A sensitive row was modified through an application account. Which source may show the SQL operation and affected object if configured?

  1. Identity-provider audit logs
  2. Database audit trail
  3. Packet capture
  4. Cloud control-plane logs
  5. Proxy transaction logs

Explanation

Correct Answer

B:

Database auditing can document statements, object access, principals and execution time at the data layer. Web access logs lack this detailed database operation context.

Incorrect Answers

A:

In work concerning the actor behind a role-assignment change, identity-platform audit logs can capture directory administrative changes, actor identity, target, and time; the operation would not resolve a change performed inside the database. Sign-in records alone are not sufficient to prove the configuration action; the distinction leaves a change performed inside the database unsettled.

C:

The required finding is about a change performed inside the database; packet capture preserves observed frame or packet bytes and timing at a capture point; this addresses the separate concern of observed traffic bytes at a specific sensor. Encryption and packet loss can limit application detail, but metadata remains examinable; it does not by itself answer a change performed inside the database.

D:

Although the case asks about a change performed inside the database, Cloud control-plane activity logs track resource-management operations and identities, subject to service and retention settings; the action instead concerns an API-driven infrastructure change. Guest OS logs generally cannot prove who modified cloud resource metadata; it does not establish a change performed inside the database.

E:

For an analysis centered on web requests handled by the gateway, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; the present need is a change performed inside the database. Network packet headers alone often lack application-level URL detail; a different finding about a change performed inside the database is still needed.

Question 28

A virtual machine firewall rule changed via an API before the breach. Which source documents that administrative API call?

  1. Proxy transaction logs
  2. Endpoint telemetry
  3. Cloud control-plane logs
  4. Identity-provider audit logs

Explanation

Correct Answer

C:

Cloud control-plane activity logs track resource-management operations and identities, subject to service and retention settings. Guest OS logs generally cannot prove who modified cloud resource metadata.

Incorrect Answers

A:

In an inquiry concerning web requests handled by the gateway, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; the scope does not extend to an API-driven infrastructure change. Network packet headers alone often lack application-level URL detail; that issue cannot settle an API-driven infrastructure change.

B:

Even though the scenario needs an API-driven infrastructure change, endpoint telemetry can record process launches, parent processes, command lines and associated security events where collection was enabled; the action relates to local process execution history. It gives host behavior missing from perimeter logs; this remains insufficient for an API-driven infrastructure change.

D:

The objective here is an API-driven infrastructure change; identity-platform audit logs can capture directory administrative changes, actor identity, target, and time; the option would instead inform the actor behind a role-assignment change. Sign-in records alone are not sufficient to prove the configuration action; it is not direct evidence of an API-driven infrastructure change.

Question 29

A web incident requires three different views: observed protocol bytes at a sensor, URLs handled by the corporate web gateway, and whether perimeter connections were denied. Which THREE evidence sources specifically provide these respective views? Choose THREE.

  1. Proxy transaction logs
  2. Database audit trail
  3. Packet capture
  4. Identity-provider audit logs
  5. DNS resolver logs
  6. Firewall connection logs

Explanation

Correct Answers

A:

In this combined inquiry, proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; network packet headers alone often lack application-level URL detail. This addresses web requests handled by the gateway.

C:

In this combined inquiry, packet capture preserves observed frame or packet bytes and timing at a capture point; encryption and packet loss can limit application detail, but metadata remains examinable. This addresses observed traffic bytes at a specific sensor.

F:

In this combined inquiry, firewall connection logs record permitted or denied flows and interface or rule context; they may not contain application payloads or user actions on the destination host. This addresses whether network connections were allowed.

Incorrect Answers

B:

Instead of a method addressing all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed, database auditing can document statements, object access, principals and execution time at the data layer; this one concerns a change performed inside the database. Web access logs lack this detailed database operation context; it cannot independently determine all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed.

D:

A case involving the actor behind a role-assignment change might use this approach: identity-platform audit logs can capture directory administrative changes, actor identity, target, and time; the required result here is all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed. Sign-in records alone are not sufficient to prove the configuration action; it cannot replace proof about all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed.

E:

The required finding is about all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed; resolver logs can identify queries, clients and returned answers when logging is configured; this addresses the separate concern of requested domains and DNS responses. They provide name-resolution context but do not prove a later application session occurred; it does not by itself answer all three needs: observed traffic bytes at a specific sensor, web requests handled by the gateway and whether network connections were allowed.

Question 30

The original database has been altered since an incident, and the team needs an earlier point-in-time comparison. Which source is valuable?

  1. Identity-provider audit logs
  2. Proxy transaction logs
  3. DHCP lease records
  4. Database audit trail
  5. Backup snapshot

Explanation

Correct Answer

E:

A retained backup or snapshot can supply an earlier state if its timestamp and integrity are verified. It is not automatically complete evidence of events between recovery points.

Incorrect Answers

A:

When the investigative task is the actor behind a role-assignment change, identity-platform audit logs can capture directory administrative changes, actor identity, target, and time; that differs from the question about earlier data state before suspected alteration. Sign-in records alone are not sufficient to prove the configuration action; that leaves earlier data state before suspected alteration unresolved.

B:

The current inquiry asks about earlier data state before suspected alteration; proxy logs may capture destination host, URI, user, policy and status depending on TLS inspection and configuration; this mechanism chiefly addresses web requests handled by the gateway. Network packet headers alone often lack application-level URL detail; it cannot prove earlier data state before suspected alteration on its own.

C:

In an inquiry concerning the device associated with a changing IP address, DHCP records can map assignment times, IP addresses and client identifiers; the scope does not extend to earlier data state before suspected alteration. Correlation with switch or endpoint records may still be needed to establish a user; that issue cannot settle earlier data state before suspected alteration.

D:

Even though the scenario needs earlier data state before suspected alteration, database auditing can document statements, object access, principals and execution time at the data layer; the action relates to a change performed inside the database. Web access logs lack this detailed database operation context; this remains insufficient for earlier data state before suspected alteration.

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