Palo Alto Networks PAN-XDRA Online Practice Questions and Exam Preparation

Palo Alto Networks PAN-XDRA Online Questions & Answers

• Question 81:

  What is an example of an attack vector for ransomware?

  A. Performing DNS queries for suspicious domains
  B. Performing SSL Decryption on an endpoint
  C. Phishing emails containing malicious attachments
  D. A URL filtering feature enabled on a firewall
  C. Phishing emails containing malicious attachments

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  Explanation

  An example of an attack vector for ransomware is phishing emails containing malicious attachments.

  Phishing is a technique that involves sending fraudulent emails that appear to come from a legitimate source, such as a bank, a company, or a government agency. The emails typically contain a malicious attachment, such as a PDF document, a ZIP archive, or a Microsoft Office document, that contains ransomware or a ransomware downloader. When the recipient opens or downloads the attachment, the ransomware is executed and encrypts the files or data on the victim's system. The attacker then demands a ransom for the decryption key, usually in cryptocurrency. Phishing emails are one of the most common and effective ways of delivering ransomware, as they can bypass security measures such as firewalls, antivirus software, or URL filtering. Phishing emails can also exploit the human factor, as they can trick the recipient into opening the attachment by using social engineering techniques, such as impersonating a trusted sender, creating a sense of urgency, or appealing to curiosity or greed. Phishing emails can also target specific individuals or organizations, such as executives, employees, or customers, in a technique called spear phishing, which increases the chances of success.

  According to various sources, phishing emails are the main vector of ransomware attacks, accounting for more than 90% of all ransomware infections 12. Some of the most notorious ransomware campaigns, such as CryptoLocker, Locky, and WannaCry, have used phishing emails as their primary delivery method 3.

  Therefore, it is essential to educate users on how to recognize and avoid phishing emails, as well as to implement security solutions that can detect and block malicious attachments. References Top 7 Ransomware Attack Vectors & How to Avoid Becoming a Victim - Bitsight.

  What Is the Main Vector of Ransomware Attacks? A Definitive Guide CryptoLocker Ransomware Information Guide and FAQ [Locky Ransomware Information, Help Guide, and FAQ] [WannaCry ransomware attack]

• Question 82:

  While working the alerts involved in a Cortex XDR incident, an analyst has found that every alert in this incident requires an exclusion.

  What will the Cortex XDR console automatically do to this incident if all alerts contained have exclusions?

  A. mark the incident as Unresolved
  B. create a BIOC rule excluding this behavior
  C. create an exception to prevent future false positives
  D. mark the incident as Resolved - False Positive
  D. mark the incident as Resolved - False Positive

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  Explanation

  If all alerts contained in a Cortex XDR incident have exclusions, the Cortex XDR console will automatically mark the incident as Resolved - False Positive. This means that the incident was not a real threat, but a benign or legitimate activity that triggered an alert. By marking the incident as Resolved - False Positive, the Cortex XDR console removes the incident from the list of unresolved incidents and does not count it towards the incident statistics. This helps the analyst to focus on the true positive incidents that require further investigation and response 1.

  An exclusion is a rule that hides an alert from the Cortex XDR console, based on certain criteria, such as the alert source, type, severity, or description. An exclusion does not change the security policy or prevent the alert from firing, it only suppresses the alert from the console. An exclusion is useful when the analyst wants to reduce the noise of false positive alerts that are not relevant or important 2. An exception, on the other hand, is a rule that overrides the security policy and allows or blocks a process or file from running on an endpoint, based on certain attributes, such as the file hash, path, name, or signer. An exception is useful when the analyst wants to prevent false negative alerts that are caused by malicious or unwanted files or processes that are not detected by the security policy 3. A BIOC rule is a rule that creates an alert based on a custom XQL query that defines a specific behavior of interest or concern. A BIOC rule is useful when the analyst wants to detect and alert on anomalous or suspicious activities that are not covered by the default Cortex XDR rules 4.

  Palo Alto Networks Cortex XDR Documentation, Resolve an Incident1 Palo Alto Networks Cortex XDR Documentation, Alert Exclusions2 Palo Alto Networks Cortex XDR Documentation, Exceptions3 Palo Alto Networks Cortex XDR Documentation, BIOC Rules4

• Question 83:

  Which statement is true for Application Exploits and Kernel Exploits?

  A. The ultimate goal of any exploit is to reach the application.
  B. Kernel exploits are easier to prevent then application exploits.
  C. The ultimate goal of any exploit is to reach the kernel.
  D. Application exploits leverage kernel vulnerability.
  C. The ultimate goal of any exploit is to reach the kernel.

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  Explanation

  The ultimate goal of any exploit is to reach the kernel, which is the core component of the operating system that has the highest level of privileges and access to the hardware resources. Application exploits are attacks that target vulnerabilities in specific applications, such as web browsers, email clients, or office suites. Kernel exploits are attacks that target vulnerabilities in the kernel itself, such as memory corruption, privilege escalation, or code execution. Kernel exploits are more difficult to prevent and detect than application exploits, because they can bypass security mechanisms and hide their presence from the user and the system.

  References:

  Palo Alto Networks Certified Detection and Remediation Analyst (PCDRA) Study Guide, page 8 Palo Alto Networks Cortex XDR Documentation, Exploit Protection Overview

• Question 84:

  What contains a logical schema in an XQL query?

  A. Bin
  B. Array expand
  C. Field
  D. Dataset
  C. Field

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  Explanation

  A logical schema in an XQL query is a field, which is a named attribute of a dataset. A field can have a data type, such as string, integer, boolean, or array. A field can also have a modifier, such as bin or expand, that transforms the field value in the query output. A field can be used in the select, where, group by, order by, or having clauses of an XQL query. References

  XQL Syntax

  XQL Data Types

  XQL Field Modifiers

• Question 85:

  What functionality of the Broker VM would you use to ingest third-party firewall logs to the Cortex Data Lake?

  A. Netflow Collector
  B. Syslog Collector
  C. DB Collector
  D. Pathfinder
  B. Syslog Collector

• Question 86:

  Which module provides the best visibility to view vulnerabilities?

  A. Live Terminal module
  B. Device Control Violations module
  C. Host Insights module
  D. Forensics module
  C. Host Insights module

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  Explanation

  The Host Insights module provides the best visibility to view vulnerabilities on your endpoints. The Host Insights module is an add-on feature for Cortex XDR that combines vulnerability management, application and system visibility, and a Search and Destroy feature to help you identify and contain threats. The vulnerability management feature allows you to scan your Windows endpoints for known vulnerabilities and missing patches, and view the results in the Cortex XDR console. You can also filter and sort the vulnerabilities by severity, CVSS score, CVE ID, or patch availability. The Host Insights module helps you reduce your exposure to threats and improve your security posture. References Host Insights Vulnerability Management

• Question 87:

  After scan, how does file quarantine function work on an endpoint?

  A. Quarantine takes ownership of the files and folders and prevents execution through access control.
  B. Quarantine disables the network adapters and locks down access preventing any communications with the endpoint.
  C. Quarantine removes a specific file from its location on a local or removable drive to a protected folder and prevents it from being executed.
  D. Quarantine prevents an endpoint from communicating with anything besides the listed exceptions in the agent profile and Cortex XDR.
  C. Quarantine removes a specific file from its location on a local or removable drive to a protected folder and prevents it from being executed.

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  Explanation

  Quarantine is a feature of Cortex XDR that allows you to isolate a malicious file from its original location and prevent it from being executed. Quarantine works by moving the file to a protected folder on the endpoint and changing its permissions and attributes. Quarantine can be applied to files detected by periodic scans or by behavioral threat protection (BTP) rules. Quarantine is only supported for portable executable (PE) and dynamic link library (DLL) files. Quarantine does not affect the network connectivity or the communication of the endpoint with Cortex XDR. References Quarantine Malicious Files Manage Quarantined Files

• Question 88:

  A Linux endpoint with a Cortex XDR Pro per Endpoint license and Enhanced Endpoint Data enabled has reported malicious activity, resulting in the creation of a file that you wish to delete.

  Which action could you take to delete the file?

  A. Manually remediate the problem on the endpoint in question.
  B. Open X2go from the Cortex XDR console and delete the file via X2go.
  C. Initiate Remediate Suggestions to automatically delete the file.
  D. Open an NFS connection from the Cortex XDR console and delete the file.
  C. Initiate Remediate Suggestions to automatically delete the file.

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  Explanation

  The best action to delete the file on the Linux endpoint is to initiate Remediation Suggestions from the Cortex XDR console. Remediation Suggestions are a feature of Cortex XDR that provide you with recommended actions to undo the effects of malicious activity on your endpoints. You can view the remediation suggestions for each alert or incident in the Cortex XDR console, and decide whether to apply them or not. Remediation Suggestions can help you restore the endpoint to its original state, remove malicious files or processes, or fix registry or system settings. Remediation Suggestions are based on the forensic data collected by the Cortex XDR agent and the analysis performed by Cortex XDR. The other options are incorrect for the following reasons: A is incorrect because manually remediating the problem on the endpoint is not a convenient or efficient way to delete the file. Manually remediating the problem would require you to access the endpoint directly, log in as root, locate the file, and delete it. This would also require you to have the necessary permissions and credentials to access the endpoint, and to know the exact path and name of the file. Manually remediating the problem would also not provide you with any audit trail or confirmation of the deletion. B is incorrect because opening X2go from the Cortex XDR console is not a supported or secure way to delete the file. X2go is a third-party remote desktop software that allows you to access Linux endpoints from a graphical user interface. However, X2go is not integrated with Cortex XDR, and using it would require you to install and configure it on both the Cortex XDR console and the endpoint. Using X2go would also expose the endpoint to potential network attacks or unauthorized access, and would not provide you with any audit trail or confirmation of the deletion. D is incorrect because opening an NFS connection from the Cortex XDR console is not a feasible or reliable way to delete the file. NFS is a network file system protocol that allows you to access files on remote servers as if they were local. However, NFS is not integrated with Cortex XDR, and using it would require you to set up and maintain an NFS server and client on both the Cortex XDR console and the endpoint. Using NFS would also depend on the network availability and performance, and would not provide you with any audit trail or confirmation of the deletion.

  Remediation Suggestions

  Apply Remediation Suggestions

• Question 89:

  Which version of python is used in live terminal?

  A. Python 2 and 3 with standard Python libraries
  B. Python 2 and 3 with specific XDR Python libraries developed by Palo Alto Networks
  C. Python 3 with specific XDR Python libraries developed by Palo Alto Networks
  D. Python 3 with standard Python libraries
  D. Python 3 with standard Python libraries

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  Explanation

  Live terminal uses Python 3 with standard Python libraries to run Python commands and scripts on the endpoint. Live terminal does not support Python 2 or any custom or external Python libraries. Live terminal uses the Python interpreter embedded in the Cortex XDR agent, which is based on Python 3.7.4. The standard Python libraries are the modules that are included with the Python installation and provide a wide range of functionalities, such as operating system interfaces, network programming, data processing, and more. You can use the Python commands and scripts to perform advanced tasks or automation on the endpoint, such as querying system information, modifying files or registry keys, or running other applications. References Run Python Commands and Scripts Python Standard Library

• Question 90:

  When is the wss (WebSocket Secure) protocol used?

  A. when the Cortex XDR agent downloads new security content
  B. when the Cortex XDR agent uploads alert data
  C. when the Cortex XDR agent connects to WildFire to upload files for analysis
  D. when the Cortex XDR agent establishes a bidirectional communication channel
  D. when the Cortex XDR agent establishes a bidirectional communication channel

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  Explanation

  The WSS (WebSocket Secure) protocol is an extension of the WebSocket protocol that provides a secure communication channel over the internet. It is used to establish a persistent, full-duplex communication channel between a client (in this case, the Cortex XDR agent) and a server (such as the Cortex XDR management console or other components). The Cortex XDR agent uses the WSS protocol to establish a secure and real-time bidirectional communication channel with the Cortex XDR management console or other components in the Palo Alto Networks security ecosystem. This communication channel allows the agent to send data, such as security events, alerts, and other relevant information, to the management console, and receive commands, policy updates, and responses in return. By using the WSS protocol, the Cortex XDR agent can maintain a persistent connection with the management console, which enables timely communication of security-related information and allows for efficient incident response and remediation actions. It's important to note that the other options mentioned in the question also involve communication between the Cortex XDR agent and various components, but they do not specifically mention the use of the WSS protocol. For example:

  A. The Cortex XDR agent downloading new security content typically utilizes protocols like HTTP or HTTPS.

  B. When the Cortex XDR agent uploads alert data, it may use protocols like HTTP or HTTPS to transmit the data securely.

  C. When the Cortex XDR agent connects to WildFire to upload files for analysis, it typically uses protocols like HTTP or HTTPS. Therefore, the correct answer is D, when the Cortex XDR agent establishes a bidirectional communication channel. References Device communication protocols - AWS IoT Core WebSocket - Wikipedia Palo Alto Networks Certified Detection and Remediation Analyst (PCDRA) - Palo Alto Networks [What are WebSockets? | Web Security Academy] [Palo Alto Networks Certified Detection and Remediation Analyst PCDRA certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Palo Alto Networks Certified Detection and Remediation Analyst PCDRA exam and earn Palo Alto Networks Certified Detection and Remediation Analyst PCDRA certification.]