CEH v13 defines a Trojan as malware that appears as a legitimate, trusted software application while secretly executing malicious actions behind the scenes. Trojans rely on deception rather than replication, often masquerading as tools, utilities, updates, or installers. Once executed, they may install backdoors, steal credentials, exfiltrate data, or modify system settings. The defining characteristic emphasized in CEH is the legitimate-looking facade combined with hidden malicious intent, which matches the scenario perfectly.
Spyware (Option B) focuses on monitoring and data collection but does not necessarily disguise itself as legitimate software. Worms (Option C) self-replicate across networks, which is not described here. Rootkits (Option D) hide system compromise but do not necessarily pose as legitimate software. Therefore, the malware described is a Trojan.

This log clearly shows an HTTP GET request attempting to exploit a web server using a directory traversal attack with Unicode encoding:
The URL contains:/msadc/..%c0%af../..%c0%af../winnt/system32/cmd.exe?/c+dir+c:
%c0%af is a known Unicode-encoded sequence used to bypass input validation filters.It translates to the forward slash character "/" when interpreted by vulnerable versions of Microsoft IIS (specifically IIS 4.0 and
5.0).
This type of attack attempts to:
Traverse out of the web root directory (via encoded ../ sequences)
Access cmd.exe in the Windows system32 directory
Execute operating system commands such as dir c: (list contents of drive C) From CEH v13 Official Courseware:
Module 14: Hacking Web Servers
Topic: Unicode Directory Traversal Vulnerability (IIS-specific)
CEH v13 Study Guide states:
"A Unicode Directory Traversal Attack takes advantage of improper input sanitization by encoding traversal characters (../) as Unicode (e.g., %c0%af). This bypasses input filters and accesses restricted directories such as system32." Incorrect Options:
A). Hexcode Attack: Not a formal classification; here Unicode encoding is used.
B). Cross-Site Scripting: Involves injecting scripts into a web page, unrelated to filesystem traversal.
C). Multiple Domain Traversal: Not a valid or recognized attack type.
Reference:CEH v13 Study Guide - Module 14: Web Server Attacks # Unicode Directory TraversalMicrosoft Security Bulletin MS00-078 - IIS Malformed Request Vulnerability

In CEH v13 Module 02: Footprinting and Reconnaissance, Google advanced operators are tools for passive information gathering.
related: operator is used to find websites similar to a given domain or webpage.
This helps attackers discover alternate domains, competitors, or similar content that may be vulnerable or poorly secured.
Example:
related:example.com
Will return a list of sites Google deems related to example.com.
Option Clarification:
A). inurl: - Searches for a keyword in the URL.
B). related: - Correct - Finds similar or related websites.
C). info: - Provides Google's cached and indexed data about a URL.
D). site: - Restricts search to a specific domain or site.
Reference:
Module 02 - Google Hacking Techniques
CEH iLabs: Google Dorking with Advanced Operators

Ettercap is a comprehensive MITM attack tool that supports live traffic interception and content injection. It can modify HTTP streams in real time and inject malicious payloads, such as JavaScript or applets, into web traffic.
Reference - CEH v13 Official Study Guide:
Module 8: Sniffing
Quote:
"Ettercap allows attackers to intercept, analyze, and alter data on the fly, including injecting malicious content like Java applets in HTTP sessions during MITM attacks." Incorrect Options Explained:
A & D. Wireshark and Tcpdump are passive sniffers with no injection capability.
C). Aircrack-ng is for Wi-Fi key cracking, not traffic manipulation.

CEH v13 emphasizes that after identifying vulnerabilities during scanning, testers must validate findings to determine real impact and eliminate false positives. This requires safe, controlled exploitation using approved tools such as Metasploit, Nikto, or custom proof-of-concept scripts. Misconfigurations labeled as medium-risk may still provide privilege escalation, data exposure, or footholds for further attacks. CEH methodology reinforces that exploitation should always follow the scope and rules of engagement and should avoid disruptive activities like brute-forcing or DoS attacks unless explicitly authorized. Ignoring the vulnerabilities is never acceptable in a professional assessment. Verifying the issue helps the organization prioritize remediation using evidence-based results. Therefore, the correct next step is to verify the vulnerability through controlled exploitation.