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The scenario describes an attack vector where insiders or malicious actors use removable media (USB drives) to introduce malware, which then connects to external sources to exfiltrate data and compromise systems.

Option B addresses the human factor and technological prevention. The guide stresses the need for training to ensure users are aware of social engineering and removable media risks. Blocking the use of USB drives at a system level further minimizes attack vectors.

Option E, using Multi-Factor Authentication (MFA), provides an additional layer of defense. Even if credentials are stolen, MFA can prevent the attacker from accessing sensitive internal resources without the second authentication factor.

These controls align with defense-in-depth strategies recommended in the Cisco CyberOps Associate curriculum to combat insider threats and external unauthorized access.

Dynamic malware analysis involves executing the malware in a controlled environment to observe its behavior, such as file creation, network traffic, or system modifications. A sandbox is designed for this purpose—it safely executes and monitors suspicious code without risking the host system. The other tools (Decompiler, Unpacker, Disassembler) are primarily used in static analysis.

Correct answer: D. Sandbox

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YARA rules are pattern-matching rules used to identify malware based on specific strings, conditions, and binary patterns. They are most effective in memory or file scans where analysts search for known indicators or unique signatures via string matching.

Correct answer: C. string matching.

The exhibit shows a PowerShell script that modifies registry keys under:

HKCU:\Software\Classes\Folder\shell\open\command

This technique is commonly associated with a UAC (User Account Control) bypass. Specifically:

It creates a new custom shell command path for opening folders.

The key registry property "DelegateExecute" is set, which is a known bypass method. If set without a value, it may cause Windows to run commands with elevated privileges without showing the UAC prompt.

The use of HKCU (HKEY_CURRENT_USER) rather than HKLM (HKEY_LOCAL_MACHINE) allows the attacker to bypass permissions since HKCU is writable by the current user. This registry hijack can be leveraged by a malicious actor to execute arbitrary commands with elevated rights.

This is identified in the Cisco CyberOps study material under “UAC bypass techniques,” which describes:

“Attackers often create or modify registry keys like DelegateExecute to hijack the default behavior of applications and elevate privileges”.

Thus, option B is correct: the exhibit demonstrates a UAC bypass using user-accessible registry modification.