Eccouncil Computer Hacking Forensic Investigator (CHFIv11) 312-49v11 Exam Questions

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Total 150 questions
Question 1

Dariel, a forensic investigator, has been assigned to investigate a recent security incident that occurred within the organization's network. As part of the investigation, Dariel installs a command-line interface packet sniffer on a Unix-based system to monitor and capture network traffic, looking for signs of unauthorized access or malicious activity. The captured data will help Dariel identify the sources of the security breach and trace the attacker's actions through the network. The tool used must be efficient for analyzing real-time network traffic and capable of running on a Unix-based operating system. Which of the following tools did Dariel employ in the above scenario?



Answer : A

According to the CHFI v11 curriculum under Network Forensics, investigators must be proficient in using packet sniffing tools to capture and analyze live network traffic. tcpdump is a widely used command-line packet analyzer that runs natively on Unix, Linux, and BSD-based systems. It allows investigators to capture packets in real time, apply powerful filters, and save traffic in PCAP format for further offline analysis using tools such as Wireshark.

In forensic investigations, tcpdump is especially valuable because it provides low-level visibility into network communications, including source and destination IP addresses, ports, protocols, TCP flags, and payload data. This enables investigators to detect suspicious behaviors such as unauthorized connections, port scans, malware command-and-control traffic, data exfiltration attempts, and denial-of-service activities. CHFI v11 specifically highlights tcpdump as a core tool for network traffic investigation and evidence gathering in Unix-based environments.

The other options are incorrect. Metashield Analyzer is used for file-based threat analysis, Timestomp is an anti-forensics tool used to manipulate file timestamps, and Billboard is not a recognized network forensic or packet sniffing tool.

The CHFI Exam Blueprint v4 emphasizes the importance of real-time packet capture tools for network investigations, making tcpdump the correct, forensically sound, and exam-aligned answer


Question 2

Following a cybersecurity incident at an organization, a forensic investigator is tasked with collecting Electronically Stored Information (ESI) as part of the investigation. To streamline the data collection process, the investigator restricts the range and size of ESI from custodians, limiting the collection to specific file types and directories on a computer. This approach ensures that only relevant information is collected while minimizing the impact on other devices. Which eDiscovery collection methodology is being used in this scenario?



Answer : D

As defined in the CHFI v11 Procedures and Methodology domain, directed collection is an eDiscovery methodology in which investigators deliberately limit evidence collection to specific data sets, file types, directories, custodians, or system areas that are known or highly likely to contain relevant information. This approach is commonly used to reduce data volume, minimize business disruption, and lower legal and operational costs while maintaining forensic relevance.

In the given scenario, the investigator intentionally restricts the scope of ESI by targeting specific directories and file types, rather than collecting full disk images or all user data. CHFI v11 explicitly describes this as directed (or targeted) collection, which is aligned with the Electronic Discovery Reference Model (EDRM) best practices. Directed collection helps investigators remain compliant with legal proportionality requirements and reduces exposure to irrelevant or private third-party data.

The other options do not match the scenario. Custodian self-collection introduces risk and is generally discouraged due to evidence integrity concerns. Incremental collection focuses on changes since a prior collection, not selective scope reduction. Remote acquisition refers to the method of access, not the collection strategy itself.

CHFI v11 emphasizes directed collection as a preferred methodology when investigators already understand where relevant evidence resides and need to collect it efficiently and defensibly. Therefore, the correct and CHFI v11--verified answer is directed collection of definite data sets and system areas, making Option D correct.


Question 3

An investigator is examining a hard disk and finds a large amount of unused space between two partitions. This space contains hidden data not recognized by the operating system.

Which of the following methods can be used to access this hidden data during a forensic investigation?



Answer : D

This scenario aligns with CHFI v11 objectives under Anti-Forensics Techniques and Disk and File System Analysis. Attackers and sophisticated users may intentionally hide data in areas of a disk that are not addressed by the operating system, such as inter-partition gaps, slack space, or unallocated space. These techniques are commonly used as anti-forensic methods to conceal illicit data from standard file system views and basic forensic tools.

CHFI v11 emphasizes that such hidden data cannot be accessed through normal OS utilities, disk cleanup tools, or backups that rely on file system structures. Instead, forensic investigators must use disk editor tools or low-level forensic utilities that allow direct sector-by-sector examination of the storage media. Disk editors enable investigators to view raw hexadecimal data, inspect unallocated areas, analyze partition tables, and uncover hidden or deliberately concealed content stored outside recognized partitions.

Reformatting or cleaning the disk would destroy potential evidence and violate forensic principles, while full disk backups alone do not inherently reveal hidden inter-partition data without further low-level analysis. Therefore, consistent with CHFI v11 best practices for uncovering hidden data and countering anti-forensic techniques, using disk editor tools to examine the inter-partition gap is the correct and forensically sound approach.


Question 4

Detective Harris is leading a digital forensics investigation into a cyberattack on a local bank's database. During the investigation, Detective Harris emphasizes the importance of maintaining the integrity of the evidence. He instructs his team to follow the established rules of thumb for data acquisition to ensure the admissibility of evidence in court. In Detective Harris's digital forensics investigation of the cyberattack on the bank's database, what step is crucial to preserving the original evidence and ensuring its integrity?



Answer : A

According to the CHFI v11 objectives under Data Acquisition Concepts and Rules and Digital Evidence Handling, the most critical step in preserving original evidence integrity is the creation of a duplicate bit-stream image of the suspect media. A bit-stream image (also known as a forensic image) is an exact sector-by-sector copy of the original storage device, including allocated space, unallocated space, slack space, and hidden data. This ensures that no data is altered, added, or omitted during acquisition.

CHFI v11 clearly states one of the fundamental rules of thumb for data acquisition: never perform analysis on original evidence. Instead, investigators must work exclusively on verified copies while the original evidence is preserved in a secured state. Hash values are calculated before and after imaging to confirm that the duplicate image is an exact replica, thereby supporting chain of custody and court admissibility.

Options C and D violate forensic best practices by risking accidental modification of the original evidence, which could render it legally inadmissible. Using multiple tools simultaneously (Option B) does not inherently preserve integrity and may introduce inconsistencies if not properly validated.

The CHFI Exam Blueprint v4 emphasizes forensic imaging and validation as mandatory steps in evidence preservation, making creating a duplicate bit-stream image the correct and exam-aligned answer


Question 5

During a routine inspection of a web server, abnormal activity suggestive of a command injection attack is discovered in the server logs. The attack vector appears to involve the exploitation of input fields to execute arbitrary commands on the server. In digital forensics, what is the primary goal of investigating a command injection attack?



Answer : B

According to the CHFI v11 objectives under Web Application Forensics and Analyzing Web-Based Attacks, the primary goal of investigating a command injection attack is to identify and understand the underlying vulnerabilities in the web application's code that allowed the attack to occur. Command injection attacks exploit improper input validation, where user-supplied data is passed directly to system-level commands without adequate sanitization or restriction.

From a forensic perspective, investigators analyze web server logs, application logs, and request parameters to determine how malicious input was crafted, which input fields were exploited, and what commands were executed on the server. This analysis helps reconstruct the attack sequence, assess the extent of compromise, and determine whether the attacker achieved privilege escalation, data exfiltration, or lateral movement.

Option B correctly reflects this forensic objective, as identifying code-level weaknesses enables organizations to remediate vulnerabilities, apply secure coding practices, and prevent recurrence. Option A focuses on log access control rather than attack analysis. Option C is unrelated to security incidents, and Option D relates more to analytics than forensic investigation.

The CHFI v11 Exam Blueprint explicitly includes investigating command injection attacks as part of web application forensics, emphasizing vulnerability identification, attack reconstruction, and remediation guidance. Therefore, identifying potential vulnerabilities in the web application's code is the correct and exam-aligned forensic goal


Question 6

As an IoT forensic investigator, you are tasked with investigating a cybercrime involving a compromised Smart TV and other IoT devices. The investigation requires extracting data from various IoT devices, including drones, wearables, and SD cards, to gather crucial evidence. You need a tool capable of performing both physical and logical extractions from these devices, covering mobile devices running Android, iOS, Tizen OS, and chip-off memory sources. Which of the following tools would be most suitable for this investigation?



Answer : B

This question maps directly to CHFI v11 objectives under Mobile and IoT Forensics and Tools for IoT Device Forensics. IoT investigations often involve heterogeneous devices with different operating systems, storage mechanisms, and acquisition challenges. CHFI v11 emphasizes the need for specialized forensic tools that support both logical and physical extraction, including advanced techniques such as chip-off and SD card analysis, to ensure comprehensive evidence collection.

MD-NEXT is a purpose-built digital forensic tool designed for mobile and IoT investigations. It supports forensic acquisition and analysis across a wide range of platforms, including Android, iOS, Tizen OS, wearables, drones, smart TVs, and removable media. Importantly, MD-NEXT provides capabilities for logical extraction, physical imaging, file system parsing, and chip-off memory analysis, which are critical when dealing with damaged, locked, or non-standard IoT devices.

The other options are not suitable for this scenario. DoubleSpace is a disk compression utility, EpochConverter is used for timestamp conversion, and Systemctl is a Linux service management command. None provide forensic acquisition capabilities. Therefore, MD-NEXT is the most suitable and CHFI v11--aligned tool for comprehensive IoT and mobile device forensic investigations.


Question 7

Amelia, a cloud security analyst, is investigating a security breach in a cloud-based system where an adversary has managed to execute malicious code within the cloud environment. The attack was executed by intercepting and manipulating a SOAP message during transmission, duplicating the body of the message, and sending it to the server as though it was from a legitimate user. This manipulation resulted in the adversary gaining unauthorized access to the cloud system. What type of cloud-based attack did the adversary perform in this situation?



Answer : D

According to the CHFI v11 Cloud Computing Threats and Attacks module, a Wrapping Attack (also known as a SOAP wrapping attack) is a well-documented vulnerability that targets SOAP-based web services commonly used in cloud environments. This attack exploits weaknesses in how XML signatures are validated within SOAP messages.

In a wrapping attack, the adversary intercepts a legitimate SOAP message, duplicates or modifies the message body, and then reinserts it into the SOAP envelope while preserving the original digital signature. Because some SOAP implementations validate only the signature and not the exact structure or position of the message body, the server mistakenly processes the attacker-controlled payload as if it originated from an authenticated user. This allows the attacker to execute unauthorized actions or malicious code within the cloud service.

CHFI v11 explicitly identifies wrapping attacks as a serious threat to cloud-based web services, especially those relying on SOAP and XML security mechanisms. The attack directly aligns with the scenario described: interception, duplication of the SOAP message body, impersonation of a legitimate user, and unauthorized access.

The other options are unrelated: Domain sniffing involves intercepting DNS traffic, cybersquatting targets domain name registration abuse, and domain hijacking involves taking control of a domain. None involve SOAP message manipulation.

Therefore, the cloud-based attack performed in this scenario---fully aligned with CHFI v11 documentation---is a Wrapping attack, making Option D the correct answer.


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Total 150 questions