CS0-003 PDF - CS0-003 Fragen&Antworten

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CS0-003 Fragen&Antworten - CS0-003 Pruefungssimulationen

CompTIA CS0-003 Prüfungsplan:

Thema	Einzelheiten
Thema 1	Incident Response and Management: It is centered around attack methodology frameworks, performing incident response activities, and explaining preparation and post-incident phases of the life cycle.
Thema 2	Security Operations: It focuses on analyzing indicators of potentially malicious activity, using tools and techniques to determine malicious activity, comparing threat intelligence and threat hunting concepts, and explaining the importance of efficiency and process improvement in security operations.
Thema 3	Vulnerability Management: This topic discusses involving implementing vulnerability scanning methods, analyzing vulnerability assessment tool output, analyzing data to prioritize vulnerabilities, and recommending controls to mitigate issues. The topic also focuses on vulnerability response, handling, and management.
Thema 4	Reporting and Communication: This topic focuses on explaining the importance of vulnerability management and incident response reporting and communication.

CompTIA Cybersecurity Analyst (CySA+) Certification Exam CS0-003 Prüfungsfragen mit Lösungen (Q237-Q242):

237. Frage
The security team reviews a web server for XSS and runs the following Nmap scan:

Which of the following most accurately describes the result of the scan?

A. The vulnerable parameter and characters > and " with a reflected XSS attempt
B. The vulnerable parameter and unfiltered or encoded characters passed > and " as unsafe
C. The vulnerable parameter ID hccp://l72.31.15.2/1.php?id-2 and unfiltered characters returned
D. An output of characters > and " as the parameters used m the attempt

Antwort: A

Begründung:
A cross-site scripting (XSS) attack is a type of web application attack that injects malicious code into a web page that is then executed by the browser of a victim user. A reflected XSS attack is a type of XSS attack where the malicious code is embedded in a URL or a form parameter that is sent to the web server and then reflected back to the user's browser. In this case, the Nmap scan shows that the web server is vulnerable to a reflected XSS attack, as it returns the characters > and " without any filtering or encoding. The vulnerable parameter is id in the URL http://172.31.15.2/1.php?id=2.

238. Frage
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?

A. A phishing link in an email was clicked
B. An Office document with a malicious macro was opened.
C. A web browser vulnerability was exploited.
D. A credential-stealing website was visited.

Antwort: B

Begründung:
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.

239. Frage
Which of the following threat-hunting concepts is most concerned with identifying the behaviors of the bad actor?

A. Insider threat analysis
B. Tactics, techniques, and procedures
C. Indicators of compromise
D. Threat intelligence sharing

Antwort: B

Begründung:
The threat-hunting concept most concerned with identifying the behaviors of the bad actor is Tactics, Techniques, and Procedures (TTPs). TTPs refer directly to how adversaries operate- their overall strategies (tactics), the ways they execute attacks (techniques), and their step-by- step actions (procedures). TTPs provide deep insight into attacker behaviors, which are used to recognize, categorize, and defend against threat actor activities in an environment.

240. Frage
During an incident response procedure, a security analyst acquired the needed evidence from the hard drive of a compromised machine. Which of the following actions should the analyst perform next to ensure the data integrity of the evidence?

A. Generate hashes for each file from the hard drive.
B. Create a chain of custody document.
C. Keep the cloned hard drive in a safe place.
D. Determine a timeline of events using correct time synchronization.

Antwort: A

Begründung:
Generating hashes for each file from the hard drive is the next action that the analyst should perform to ensure the data integrity of the evidence. Hashing is a technique that produces a unique and fixed-length value for a given input, such as a file or a message. Hashing can help to verify the data integrity of the evidence by comparing the hash values of the original and copied files. If the hash values match, then the evidence has not been altered or corrupted. If the hash values differ, then the evidence may have been tampered with or damaged .

241. Frage
The threat intelligence team is using the MITRE ATT & CK framework to map threat actors' TTPs to the team's internal reference library. Which of the following best describes the reason visualization and stage alignment are helpful for the incident response team?

A. Aligning an action to a specific stage in an incident allows the incident response team to better define intent and anticipate the next action.
B. Knowing the attack stage helps the incident response team determine how to structure custom SIEM alerts to detect security events of interest.
C. A visual mapping helps the incident response team identify the stage and relevant TTPs faster than a white paper for each threat actor.
D. Having a common framework provides structure for relaying the known indicators of concern to the security monitoring team.

Antwort: A

Begründung:
The correct answer is D because MITRE ATT & CK maps adversary tactics, techniques, and procedures to stages or tactical goals of an attack. When the incident response team can align observed activity to a specific ATT & CK stage, the team can better understand the attacker's intent, determine what has likely already happened, and anticipate what the attacker may try next.
The CySA+ All-in-One guide explains that attack frameworks break a cyberattack "from initial reconnaissance to final exfiltration of data" into steps or phases. It also states that studying attacker TTPs helps analysts "better anticipate and prepare for potential attacks" and develop stronger incident response plans.
The guide further explains that MITRE ATT & CK provides a structured methodology for modeling and understanding attacker TTPs, with tactics representing high-level goals and techniques representing the methods attackers use to achieve those goals.
It also states that in incident response, analysts can map observed attacker behavior to the appropriate ATT & CK technique to better understand the attacker's goals and motivations, identify other potentially compromised areas, and prioritize remediation.
Why the other options are incorrect:
A is partially true, but it focuses more on communicating indicators to monitoring teams, not on why stage alignment helps incident responders.
B is too narrow because it focuses on SIEM alert creation rather than incident response decision-making.
C is partially true because visualization can improve speed, but the best reason is not simply that a visual map is faster than a white paper.
D is correct because stage alignment helps the IR team understand attacker intent and anticipate the next likely action.

242. Frage
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