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EC-Council 312-50v13 Exam Actual Questions
Certified Ethical Hacker v13 (Page 25 )

Updated On: 31-Jul-2026
Page 25 of 133
PDF with 1065 Questions

In a recent cyber-attack against a large corporation, an unknown adversary compromised the network and began escalating privileges and lateral movement. The security team identified that the adversary used a sophisticated set of techniques, specifically targeting zero-day vulnerabilities. As a Certified Ethical Hacker (CEH) hired to understand this attack and propose preventive measures, which of the following actions will be most crucial for your initial analysis?

  1. Identifying the specific tools used by the adversary for privilege escalation.
  2. Analyzing the initial exploitation methods, the adversary used.
  3. Checking the persistence mechanisms used by the adversary in compromised systems.
  4. Investigating the data exfiltration methods used by the adversary.

Answer(s): B

Explanation:

B is correct because analyzing the initial exploitation methods provides critical insights into the attack vector and the vulnerabilities exploited by the adversary.
Understanding the initial exploitation methods reveals the entry point used by the attacker, which is vital for establishing how the attack occurred and preventing future incidents. This knowledge allows security teams to patch vulnerabilities, improve detection mechanisms, and enhance overall security posture.
Evaluation of Other Options:

A: Identifying the specific tools used by the adversary for privilege escalation.
While knowing the tools is useful for forensics, it is secondary to understanding the initial entry method. Without identifying how the attacker first gained access (the exploitation method), the specific tools used later in the attack are less meaningful as they hinge on the initial breach.
C: Checking the persistence mechanisms used by the adversary in compromised systems. Persistence mechanisms are typically employed after initial exploitation to maintain access. Understanding these mechanisms is important for eradication but does not aid in understanding the root cause of the breach, thus delaying effective remediation efforts.
D: Investigating the data exfiltration methods used by the adversary. This is essential in understanding the impact of the breach but occurs post-exploitation. Without analyzing how the adversary penetrated the network, the focus would be on the aftermath rather than preventing further attacks.
References:
https://www.sans.org/white-papers/40242/ https://www.cisecurity.org/white-papers/incident-handling-and-response/ https://www.nist.gov/publications/security-and-privacy-guidelines-industry-standards-and-best-practices


Reference:

References:
https://www.sans.org/white-papers/40242/ https://www.cisecurity.org/white-papers/incident-handling-and-response/ https://www.nist.gov/publications/security-and-privacy-guidelines-industry-standards-and-best-practices



Jason, a certified ethical hacker, is hired by a major e-commerce company to evaluate their network's security. As part of his reconnaissance, Jason is trying to gain as much information as possible about the company's public-facing servers without arousing suspicion. His goal is to find potential points of entry and map out the network infrastructure for further examination.
Which technique should Jason employ to gather this information without alerting the company's intrusion detection systems (IDS)?

  1. Jason should directly connect to each server and attempt to exploit known vulnerabilities.
  2. Jason should use passive reconnaissance techniques such as WHOIS lookups, NS lookups, and web research.
  3. Jason should use a DNS zone transfer to gather information about the company's servers.
  4. Jason should perform a ping sweep to identify all the live hosts in the company's IP range.

Answer(s): B

Explanation:

B is correct because using passive reconnaissance techniques minimizes detection while gathering valuable information about the target network.
Passive reconnaissance involves information gathering without directly interacting with the target's systems, thus avoiding triggering intrusion detection systems (IDS). Techniques such as WHOIS and NS lookups allow Jason to collect domain registration details and DNS information without generating suspicious activity. Web research can yield insights into the company's technologies, potential vulnerabilities, and staff, contributing to a comprehensive understanding of the network environment.
Evaluation of Other Options:

A: Direct exploitation of vulnerabilities is overt and would likely trigger alarms on the IDS. This method not only risks legal repercussions but also diminishes the ethical boundaries of the hacker’s engagement.
C: DNS zone transfers can be detected and may be blocked or flagged by the organization's security protocols. This passive approach can lead to a denial of service or get Jason blacklisted, as many organizations monitor for unauthorized zone transfer attempts.
D: Ping sweeps are more intrusive and can be recognized by IDS, as they generate ICMP packets that can alert monitoring systems. This active reconnaissance tactic could compromise his methodology and risk detection.
References:
https://www.eccouncil.org https://www.sans.org https://owasp.org


Reference:

References:
https://www.eccouncil.org https://www.sans.org https://owasp.org



As the lead security engineer for a retail corporation, you are assessing the security of the wireless networks in the company's stores. One of your main concerns is the potential for "Wardriving" attacks, where attackers drive around with a Wi-Fi-enabled device to discover vulnerable wireless networks. Given the nature of the retail stores, you need to ensure that any security measures you implement do not interfere with customer experience, such as their ability to access in-store Wi-Fi. Taking into consideration these factors, which of the following would be the most suitable measure to mitigate the risk of Wardriving attacks?

  1. Limit the range of the store's wireless signals
  2. Implement MAC address filtering
  3. Disable SSID broadcasting
  4. Implement WPA3 encryption for the store's Wi-Fi network

Answer(s): D

Explanation:

Implementing WPA3 encryption for the store's Wi-Fi network is the most suitable measure to mitigate the risk of Wardriving attacks.
WPA3 provides enhanced security features compared to its predecessors, including stronger encryption protocols, password protection against brute-force attacks, and improved resilience to password guessing attempts. These attributes collectively enhance the security of the wireless network, making it significantly more difficult for an attacker to exploit vulnerabilities associated with Wardriving. By securing the data transmitted over the network, WPA3 mitigates the risk of eavesdropping and unauthorized access effectively,
ensuring customer experience remains unaffected.
Evaluation of Alternatives:

A: Limit the range of the store's wireless signals: While limiting the wireless signal's range can minimize external access, it may hinder customer connectivity within the store. Customers often expect robust signal access, and reducing range could lead to dissatisfaction and impact store operations.
B: Implement MAC address filtering: This method allows only specific devices to connect; however, it can be easily spoofed by attackers who can change their MAC addresses. Moreover, it adds administrative overhead, complicating guest access and potentially degrading user experience as customers may face connectivity issues.
C: Disable SSID broadcasting: This action makes the network less visible to casual observers. However, it does not provide true security, as knowledgeable attackers can still detect hidden networks. This measure could frustrate customers trying to connect to the Wi-Fi, thereby affecting customer service and engagement.
In summary, while the other options may provide minimal security benefits, they compromise customer experience and do not effectively counter the sophisticated techniques employed in Wardriving. In contrast, WPA3 encryption provides robust defense mechanisms while allowing seamless customer access.
References:
https://www.wi-fi.org/discover-wi-fi/security https://www.lockheedmartin.com/en-us/capabilities/cyber/cybersecurity-architecture/wpa3-vs-wpa2.html https://www.cisco.com/c/en/us/products/security/wireless-security/what-is-wpa3.html


Reference:

References:
https://www.wi-fi.org/discover-wi-fi/security https://www.lockheedmartin.com/en-us/capabilities/cyber/cybersecurity-architecture/wpa3-vs-wpa2.html https://www.cisco.com/c/en/us/products/security/wireless-security/what-is-wpa3.html



A penetration tester was assigned to scan a large network range to find live hosts. The network is known for using strict TCP filtering rules on its firewall, which may obstruct common host discovery techniques. The tester needs a method that can bypass these firewall restrictions and accurately identify live systems.
What host discovery technique should the tester use?

  1. ICMP Timestamp Ping Scan
  2. ICMP ECHO Ping Scan
  3. TCP SYN Ping Scan
  4. UDP Ping Scan

Answer(s): C

Explanation:

Correct Answer: C - TCP SYN Ping Scan.
The TCP SYN Ping Scan effectively identifies live hosts by sending SYN packets to various ports, leveraging the TCP handshake while minimizing detection by firewalls. Given the strict TCP filtering regulations in the target environment, this technique is particularly advantageous as many firewalls permit SYN packets but may block ICMP-based probing methods due to their susceptibility to attack.
Evaluation of Other Options:

A: ICMP Timestamp Ping Scan: This method uses ICMP Timestamp requests to ascertain system availability, but many firewalls are configured to drop these packets for security reasons. Additionally, the attacker gains limited information as it primarily reveals the timestamp, which does not conclusively indicate live hosts.
B: ICMP ECHO Ping Scan: Standard ICMP ECHO requests are commonly used for host discovery. However, firewalls typically block ICMP traffic to prevent ping sweeps, rendering this method largely ineffective in networks with stringent security constraints.
D: UDP Ping Scan: Although UDP Ping Scans can identify live hosts by sending UDP packets to specific ports and waiting for responses, they are generally slower and less reliable. Many UDP services may not respond, leading to inaccurate detection, especially where firewalls strictly filter UDP traffic, making this approach less viable in controlled environments.
In consideration of the above analysis, the TCP SYN Ping Scan emerges as the most effective choice for host discovery in networks with strict TCP filtering, balancing stealth and effectiveness.
References: https://www.paloaltonetworks.com/resources/security-insights/what-is-an-icmp-explained https://www.cisco.com/c/en/us/support/docs/security/ios-firewall/5760-what-is-a-syn-flood-attack.html https://www.sans.org/blog/tcp-syn-scan/


Reference:

References: https://www.paloaltonetworks.com/resources/security-insights/what-is-an-icmp-explained https://www.cisco.com/c/en/us/support/docs/security/ios-firewall/5760-what-is-a-syn-flood-attack.html https://www.sans.org/blog/tcp-syn-scan/



As part of a college project, you have set up a web server for hosting your team’s application. Given your interest in cybersecurity, you have taken the lead in securing the server. You are aware that hackers often attempt to exploit server misconfigurations.
Which of the following actions would best protect your web server from potential misconfiguration-based attacks?

  1. Regularly backing up server data
  2. Enabling multi-factor authentication for users
  3. Implementing a firewall to filter traffic
  4. Performing regular server configuration audits

Answer(s): D

Explanation:

D is correct because performing regular server configuration audits directly addresses the vulnerabilities associated with misconfigurations, which are prevalent targets for attackers.
Misconfigurations can arise from improper settings or overlooked security controls, making regular audits vital for identifying and rectifying these vulnerabilities. Continuous monitoring can reveal anomalies that may signal potential exploitation, thus strengthening the overall security posture.
Evaluation of Other Options:

A: Regularly backing up server data: While essential for data recovery, backups do not prevent or mitigate misconfigurations. In the event of an attack due to a misconfiguration, backups may help restore data but will not address the root cause of vulnerability.
B: Enabling multi-factor authentication for users: Multi-factor authentication (MFA) enhances user authentication security but does not protect the server's configuration itself. A well-configured server could still possess inherent vulnerabilities unrelated to user access processes.
C: Implementing a firewall to filter traffic: A firewall serves as a critical defense mechanism by controlling incoming and outgoing traffic. However, it primarily focuses on network-level threats and does not rectify misconfigurations within the server software or settings, leaving the server itself vulnerable if not configured correctly.
In conclusion, while all options contribute to security, regular configuration audits are imperative to identifying and correcting potential vulnerabilities before they can be exploited.
References:
https://www.nist.gov/news-events/news/2020/06/importance-auditing-it-systems https://www.cisecurity.org/white-papers/the-importance-of-configuration-management-and-audits https://owasp.org/www-project-top-ten/2021/A1_2021-Broken_Access_Control.html


Reference:

References:
https://www.nist.gov/news-events/news/2020/06/importance-auditing-it-systems https://www.cisecurity.org/white-papers/the-importance-of-configuration-management-and-audits https://owasp.org/www-project-top-ten/2021/A1_2021-Broken_Access_Control.html



You are the chief cybersecurity officer at CloudSecure Inc., and your team is responsible for securing a cloud based application that handles sensitive customer data. To ensure that the data is protected from breaches, you have decided to implement encryption for both data-at-rest and data-in-transit. The development team suggests using SSL/TLS for securing data in transit. However, you want to also implement a mechanism to detect if the data was tampered with during transmission.
Which of the following should you propose?

  1. Implement IPsec in addition to SSL/TLS.
  2. Switch to using SSH for data transmission.
  3. Encrypt data using the AES algorithm before transmission.
  4. Use the cloud service provider's built-in encryption services.

Answer(s): A

Explanation:

Implementing IPsec in addition to SSL/TLS enhances the security posture by ensuring data integrity and authenticity during transmission.
IPsec provides a robust framework that can ensure data integrity through mechanisms like hashing, which detects alterations during transport.
While SSL/TLS encrypts data in transit, without an additional layer, it does not inherently verify data integrity against tampering. Adding IPsec introduces an additional protocol that can provide both encryption and integrity checks, complementing SSL/TLS effectively by protecting against man-in-the-middle attacks and ensuring that received data matches the sent data.
Evaluation of Incorrect Options:
B: Switch to using SSH for data transmission: While SSH is secure, it is primarily designed for secure shell communication and does not fit well for full-fledged application data transmission scenarios, especially in a cloud-based environment. Its use would limit flexibility and interoperability with web standards, further complicating integration within existing architectures.
C: Encrypt data using the AES algorithm before transmission: Although AES provides strong encryption, it lacks transmission integrity checks on its own unless paired with an additional protocol that ensures authenticity, such as HMAC. Encrypting data simply means it is unreadable without the right key; this does not guarantee that the data has not been tampered with during transit.
D: Use the cloud service provider's built-in encryption services: While leveraging built-in encryption services may enhance data protection at rest or during transit, these solutions generally do not include integrity verification measures against tampering. Relying solely on cloud provider services may also expose the organization to potential vulnerabilities inherent in third-party management.
In conclusion, employing IPsec alongside SSL/TLS forms a comprehensive strategy for data transmission, ensuring both confidentiality and integrity.
References:
https://www.cloudflare.com/learning/how-tls-works/ https://whatismyipaddress.com/ipsec https://www.ibm.com/docs/en/zos/2.2.0?topic=concepts-ip-security-overview


Reference:

References:
https://www.cloudflare.com/learning/how-tls-works/ https://whatismyipaddress.com/ipsec https://www.ibm.com/docs/en/zos/2.2.0?topic=concepts-ip-security-overview



Sarah, a system administrator, was alerted of potential malicious activity on the network of her company. She discovered a malicious program spread through the instant messenger application used by her team. The attacker had obtained access to one of her teammate's messenger accounts and started sending files across the contact list.
Which best describes the attack scenario and what measure could have prevented it?

  1. Insecure Patch Management; updating application software regularly
  2. Instant Messenger Applications; verifying the sender's identity before opening any files
  3. Rogue/Decoy Applications; ensuring software is labeled as TRUSTED
  4. Portable Hardware Media/Removable Devices; disabling Autorun functionality

Answer(s): B

Explanation:

B is correct because verifying the sender's identity before opening files mitigates the risks associated with instant messenger attacks.
In the context of this scenario, the compromise of a teammate's account highlights the critical need for robust identity verification protocols. Attackers often exploit social engineering tactics by masquerading as trusted contacts. By implementing methods such as two-factor authentication (2FA) and educating users on recognizing phishing attempts, organizations can significantly reduce the likelihood of unauthorized access through instant messaging platforms (Gupta, G. & S. Gupta, 2020).
Evaluation of Other Options:

A: Insecure Patch Management; updating application software regularly: Although regular updates are essential for maintaining security against known vulnerabilities, this option does not directly address the immediate method of communication through instant messaging. The specific attack vector was not a result of unpatched software but rather social engineering exploitation.
C: Rogue/Decoy Applications; ensuring software is labeled as TRUSTED: This option relates more to the integrity of the applications themselves rather than the communication process.
While ensuring applications are trusted is critical, it fails to address how the attacker manipulated an account already considered trustworthy to propagate malicious content.
D: Portable Hardware Media/Removable Devices; disabling Autorun functionality: This option pertains specifically to threats posed by removable media and does not relate to the risks associated with instant messaging. The nature of the attack described focuses purely on communication rather than file transfer via hardware interfaces.
In conclusion, option B most accurately identifies the nature of the attack and offers a preventive measure that targets the immediate risk of impersonation inherent to instant messaging platforms.
References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7531790/ https://www.sciencedirect.com/science/article/pii/S1877050919310851 https://www.csoonline.com/article/3287394/how-to-secure-your-instant-messaging-app.html


Reference:

References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7531790/ https://www.sciencedirect.com/science/article/pii/S1877050919310851 https://www.csoonline.com/article/3287394/how-to-secure-your-instant-messaging-app.html



A multinational organization has recently faced a severe information security breach. Investigations reveal that the attacker had a high degree of understanding of the organization’s internal processes and systems. This knowledge was utilized to bypass security controls and corrupt valuable resources. Considering this event, the security team is contemplating the type of attack that occurred and the steps they could have taken to prevent it. Choose the most plausible type of attack and a countermeasure that the organization could have employed:

  1. Insider attacks and the organization should have implemented robust access control and monitoring.
  2. Distribution attack and the organization could have ensured software and hardware integrity checks.
  3. Passive attack and the organization should have used encryption techniques.
  4. Active attack and the organization could have used network traffic analysis.

Answer(s): A

Explanation:

A: Insider attacks and the organization should have implemented robust access control and monitoring.
The breach indicates knowledge of internal processes, characteristic of insider attacks, wherein individuals with legitimate access exploit their position to compromise security. Such attacks often leverage insider familiarity with systems, resulting in a significant circumvention of established control mechanisms. Implementing stringent access controls would limit permissions based on the principle of least privilege, while continuous monitoring would detect anomalous behavior indicative of malpractice, thereby mitigating risks.
Evaluation of Other Options:
B: Distribution attack : This implies the compromise of software or distribution channels, which does not align with the specifics of an attacker using organizational knowledge.
While integrity checks are essential, they do not address insider threats where the perpetrator is already privy to sensitive information.
C: Passive attack : Passive attacks, primarily involving eavesdropping or data interception without direct interaction, do not typically exploit insider knowledge. Encryption is vital for protecting data in transit, but in cases where an insider is involved, it cannot prevent malicious actions taken from within the organization.
D: Active attack : While active attacks do involve actions taken against systems to disrupt or modify operations, the specific context of the question points to an insider—someone already capable of navigating systems and processes, making traditional active attack measures insufficient in this circumstance. Network traffic analysis would likely not reveal the intricacies of an insider's actions facilitated by legitimate access.
References:
1. https://www.csoonline.com/article/3546267/insider-threats-the-ultimate-guide.html
2. https://www.nist.gov/itl/publications/information-security-guide-insiders 3. https://www.sans.org/white-papers/33417/


Reference:

References:
1. https://www.csoonline.com/article/3546267/insider-threats-the-ultimate-guide.html
2. https://www.nist.gov/itl/publications/information-security-guide-insiders 3. https://www.sans.org/white-papers/33417/



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