ECCouncil Updated 312-50v13 Exam Questions and Answers by zayaan

A sheep dip computer is a dedicated device that is used to test inbound files or physical media for viruses, malware, or other harmful content, before they are allowed to be used with other computers. The term sheep dip comes from a method of preventing the spread of parasites in a flock of sheep by dipping the new animals that farmers are adding to the flock in a trough of pesticide. A sheep dip computer is isolated from the organization’s network and has port monitors, file monitors, network monitors, and antivirus software installed. Before initiating the analysis of a potentially malicious program, the analyst should store the program on an external medium, such as a CD-ROM, and then insert it into the sheep dip computer. This way, the analyst can prevent the program from infecting other devices or spreading over the network, and can safely analyze its behavior and characteristics.

The other options are not correct steps to take before initiating the analysis. Running the potentially malicious program on the sheep dip computer may cause irreversible damage to the device or compromise its security. Connecting the sheep dip computer to the organization’s internal network may expose the network to the risk of infection or attack. Installing the potentially malicious program on the sheep dip computer may not be possible or advisable, as the program may require certain dependencies or permissions that the sheep dip computer does not have or allow. 

The command in question:

wget 192.168.0.15 -q -S

wget is a command-line utility used to retrieve files via HTTP, HTTPS, or FTP.

-q (quiet mode): Suppresses output, except for errors.

-S: Displays the server response headers (even in quiet mode).

In this case, wget is being used to connect to the specified web server (192.168.0.15) and retrieve the HTTP response headers — such as the Server field (e.g., Apache, Nginx), HTTP status codes, and other metadata.

This is a classic example of banner grabbing — the process of capturing metadata (often from headers) to identify the software, version, or configuration of a service.

Incorrect Options:

A. Content enumeration would require directory brute-forcing tools like DirBuster or Gobuster.

C. DoS attacks require high volumes of traffic or specially crafted packets; wget with a single request does not perform flooding.

D. Downloading full site contents would involve options like -r (recursive) or --mirror, which are not used in this command.

Reference – CEH v13 Official Courseware:

Module 03: Scanning Networks

Section: “Banner Grabbing”

Tool Reference: wget, netcat, telnet, curl for banner enumeration

SSL/TLS is a protocol that provides encryption and authentication for data in transit between a client and a server. However, SSL/TLS does not provide any protection against data tampering, which is the alteration, deletion, or insertion of data without authorization or proper validation. Data tampering can compromise the integrity and accuracy of the data, and potentially lead to breaches or fraud. To detect and prevent data tampering, you should implement IPsec in addition to SSL/TLS. IPsec is a protocol that provides encryption, authentication, and integrity for data in transit at the network layer. IPsec uses cryptographic mechanisms, such as digital signatures and hash-based message authentication codes (HMACs), to verify the identity of the sender and the receiver, and to ensure that the data has not been modified during transmission. IPsec can also provide replay protection, which prevents an attacker from retransmitting old or duplicate packets. By combining SSL/TLS and IPsec, you can achieve a higher level of security and reliability for your cloud-based application. References:

EC-Council CEHv13 Courseware Module 18: Cryptography, page 18-20

EC-Council CEHv13 Courseware Module 19: Cloud Computing, page 19-29

A comprehensive guide to data tampering

Tamper Detection

In CEH v13 Module 17: Mobile and IoT Security, Spearphone is defined as a privacy-intrusion attack that:

Exploits a smartphone’s speaker output, particularly when loudspeaker mode is used.

Leverages motion sensors (accelerometer, gyroscope) through a malicious app to capture acoustic signals emitted during:

Phone calls

Voice assistant interactions

Media playback

This enables attackers to extract private speech content without needing microphone access.

Option Clarification:

A. Man-in-the-disk: Exploits unprotected external storage in Android.

B. aLTEr: Exploits LTE protocol weaknesses; unrelated to loudspeaker eavesdropping.

C. SIM card attack: Targets SIM-level vulnerabilities (e.g., SIMjacker).

D. Spearphone: Correct — exploits loudspeaker emissions and motion sensors.