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| Section | Weight | Objectives |
|---|---|---|
| Vulnerability Management | 34% | - Vulnerability identification
|
| Incident Response and Management | 33% | - Incident handling lifecycle
|
| Security Operations | 33% | - Monitoring security environments
|
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NEW QUESTION # 92
An organization has tracked several incidents that are listed in the following table:
Answer: A
Explanation:
The MTTD (Mean Time To Detect) is calculated by averaging the time elapsed in detecting incidents. From the given data: (180+150+170+140)/4 = 160 minutes. This is the correct answer according to the CompTIA CySA+ CS0-003 Certification Study Guide1, Chapter 4, page 161. Reference: CompTIA CySA+ Study Guide: Exam CS0-003, 3rd Edition, Chapter 4, page 153; CompTIA CySA+ CS0-003 Certification Study Guide, Chapter 4, page 161.
NEW QUESTION # 93
A cybersecurity analyst is reviewing SIEM logs and observes consistent requests originating from an internal host to a blocklisted external server. Which of the following best describes the activity that is taking place?
Answer: D
Explanation:
Beaconing is the best term to describe the activity that is taking place, as it refers to the periodic communication between an infected host and a blocklisted external server. Beaconing is a common technique used by malware to establish a connection with a command-and-control (C2) server, which can provide instructions, updates, or exfiltration capabilities to the malware. Beaconing can vary in frequency, duration, and payload, depending on the type and sophistication of the malware. The other terms are not as accurate as beaconing, as they describe different aspects of malicious activity. Data exfiltration is the unauthorized transfer of data from a compromised system to an external destination, such as a C2 server or a cloud storage service. Data exfiltration can be a goal or a consequence of malware infection, but it does not necessarily involve blocklisted servers or consistent requests. Rogue device is a device that is connected to a network without authorization or proper security controls. Rogue devices can pose a security risk, as they can introduce malware, bypass firewalls, or access sensitive data. However, rogue devices are not necessarily infected with malware or communicating with blocklisted servers. Scanning is the process of probing a network or a system for vulnerabilities, open ports, services, or other information. Scanning can be performed by legitimate administrators or malicious actors, depending on the intent and authorization. Scanning does not imply consistent requests or blocklisted servers, as it can target any network or system.
NEW QUESTION # 94
Which of the following in the digital forensics process is considered a critical activity that often includes a graphical representation of process and operating system events?
Answer: D
Explanation:
Timeline analysis in digital forensics involves creating a chronological sequence of events based on system logs, file changes, and other forensic data. This process often uses graphical representations to illustrate and analyze how an incident unfolded over time, making it easier to identify key events and potential indicators of compromise. This approach is highlighted in CompTIA Cybersecurity Analyst (CySA+) practices as crucial for understanding the scope and sequence of a security incident. The other options do not involve chronological or graphical analysis to the extent that timeline analysis does.
NEW QUESTION # 95
A security analyst receives an alert for suspicious activity on a company laptop. An excerpt of the log is shown below:
Which of the following has most likely occurred?
Answer: D
Explanation:
An Office document with a malicious macro was opened is the most likely explanation for the suspicious activity on the company laptop, as it reflects the common technique of using macros to execute PowerShell commands that download and run malware. A macro is a piece of code that can automate tasks or perform actions in an Office document, such as a Word file or an Excel spreadsheet. Macros can be useful and legitimate, but they can also be abused by threat actors to deliver malware or perform malicious actions on the system. A malicious macro can be embedded in an Office document that is sent as an attachment in a phishing email or hosted on a compromised website. When the user opens the document, they may be prompted to enable macros or content, which will trigger the execution of the malicious code. The malicious macro can then use PowerShell, which is a scripting language and command-line shell that is built into Windows, to perform various tasks, such as downloading and running malware from a remote URL, bypassing security controls, or establishing persistence on the system. The log excerpt shows that PowerShell was used to download a string from a URL using the WebClient.DownloadString method, which is a common way to fetch and execute malicious code from the internet. The log also shows that PowerShell was used to invoke an expression (iex) that contains obfuscated code, which is another common way to evade detection and analysis. The other options are not as likely as an Office document with a malicious macro was opened, as they do not match the evidence in the log excerpt. A credential-stealing website was visited is possible, but it does not explain why PowerShell was used to download and execute code from a URL. A phishing link in an email was clicked is also possible, but it does not explain what happened after the link was clicked or how PowerShell was involved. A web browser vulnerability was exploited is unlikely, as it does not explain why PowerShell was used to download and execute code from a URL.
NEW QUESTION # 96
A web developer reports the following error that appeared on a development server when testing a new application:
Which of the following tools can be used to identify the application's point of failure?
Answer: B
Explanation:
The error indicates the application (running under w3wp.exe, the IIS worker process) crashed/stopped working. To identify the application's point of failure, you need a debugger that can perform dynamic analysis-setting breakpoints, stepping through execution, inspecting memory/stack/registers, and/or analyzing a crash dump/core dump to pinpoint where the failure occurred.
The CySA+ All-in-One guide describes exactly how a debugger is used to analyze a crash and determine the program's state at the time of failure:
Exact extract (All-in-One Exam Guide):
"Using a debugger, you can load the core dump file and examine the program's state at the time of the crash..." It then explains that debuggers (including Immunity) are used for dynamic analysis by stepping through code and examining runtime behavior:
Exact extract (All-in-One Exam Guide):
"Immunity... offers... features... valuable for security analysts... Security analysts can leverage Immunity to set breakpoints, step through code, and monitor the execution flow of a program... allowing analysts to... uncover critical security information." The Sybex CySA+ Study Guide reinforces that debuggers are used for dynamic analysis of executables and explicitly lists Immunity Debugger as a key tool:
Exact extract (Sybex Study Guide):
"Debuggers... allow testers to perform dynamic analysis of executable files... Immunity debugger is designed specifically to support penetration testing and the reverse engineering of malware." Also, the official CompTIA CS0-003 objectives list Immunity Debugger under tools used to analyze output from vulnerability assessment tools (debuggers category), confirming it as an expected exam-relevant tool choice:
Exact extract (CompTIA CS0-003 Objectives):
"Debuggers: Immunity debugger, GNU debugger (GDB)"
Why the other options are wrong
A . OpenVAS is an infrastructure vulnerability scanner, not a crash/failure debugger.
B . Angry IP Scanner is a network scanning/mapping tool for IPs/ports, not application crash analysis.
D . Burp Suite is a web application testing/proxy tool (great for analyzing HTTP requests, auth, app logic flaws), but it does not directly pinpoint a process crash point like a debugger can.
Reference (CompTIA CySA+ CS0-003 documents / study guides used):
Mya Heath et al., CompTIA CySA+ All-in-One Exam Guide (CS0-003): debuggers analyze crash/core dump state; Immunity Debugger supports breakpoints/stepping/execution monitoring Mike Chapple & David Seidl, CompTIA CySA+ Study Guide (CS0-003): debuggers support dynamic analysis; Immunity debugger noted as a key debugger tool CompTIA CySA+ CS0-003 Exam Objectives v4.0: lists "Immunity debugger" under debugger tools
NEW QUESTION # 97
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