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Palo Alto Networks XDR Analyst Sample Questions (Q15-Q20):

NEW QUESTION # 15
Which of the following protection modules is checked first in the Cortex XDR Windows agent malware protection flow?

Answer: C

Explanation:
The first protection module that is checked in the Cortex XDR Windows agent malware protection flow is the Hash Verdict Determination. This module compares the hash of the executable file that is about to run on the endpoint with a list of known malicious hashes stored in the Cortex XDR cloud. If the hash matches a malicious hash, the agent blocks the execution and generates an alert. If the hash does not match a malicious hash, the agent proceeds to the next protection module, which is the Restriction Policy1.
The Hash Verdict Determination module is the first line of defense against malware, as it can quickly and efficiently prevent known threats from running on the endpoint. However, this module cannot protect against unknown or zero-day threats, which have no known hash signature. Therefore, the Cortex XDR agent relies on other protection modules, such as Behavioral Threat Protection, Child Process Protection, and Exploit Protection, to detect and block malicious behaviors and exploits that may occur during the execution of the file1.
Reference:
Palo Alto Networks Cortex XDR Documentation, File Analysis and Protection Flow


NEW QUESTION # 16
Which function describes the removal of a specific file from its location on a local or removable drive to a protected folder to prevent the file from being executed?

Answer: A

Explanation:
The function that describes the removal of a specific file from its location on a local or removable drive to a protected folder to prevent the file from being executed is quarantine. Quarantine is a feature of Cortex XDR that allows you to isolate malicious or suspicious files from the endpoint and prevent them from running or spreading. You can quarantine files manually from the Cortex XDR console, or automatically based on the malware analysis profile or the remediation suggestions. When you quarantine a file, the Cortex XDR agent encrypts the file and moves it to a hidden folder under the agent installation directory. The file is also renamed with a random string and a .quarantine extension. You can view, restore, or delete the quarantined files from the Cortex XDR console. Reference:
Quarantine Files
Manage Quarantined Files


NEW QUESTION # 17
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?

Answer: A

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 response1.
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 important2.
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 policy3.
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 rules4.
Reference:
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


NEW QUESTION # 18
When creating a scheduled report which is not an option?

Answer: C

Explanation:
When creating a scheduled report in Cortex XDR, the option to run quarterly on a certain day and time is not available. You can only schedule reports to run daily, weekly, or monthly. You can also specify the start and end dates, the time zone, and the recipients of the report. Scheduled reports are useful for generating regular reports on the security events, incidents, alerts, or endpoints in your network. You can create scheduled reports from the Reports page in the Cortex XDR console, or from the Query Center by saving a query as a report. Reference:
Run or Schedule Reports
Create a Scheduled Report


NEW QUESTION # 19
Which of the following represents the correct relation of alerts to incidents?

Answer: A

Explanation:
The correct relation of alerts to incidents is that alerts with same causality chains that occur within a given time frame are grouped together into an incident. A causality chain is a sequence of events that are related to the same malicious activity, such as a malware infection, a lateral movement, or a data exfiltration. Cortex XDR uses a set of rules that take into account different attributes of the alerts, such as the alert source, type, and time period, to determine if they belong to the same causality chain. By grouping related alerts into incidents, Cortex XDR reduces the number of individual events to review and provides a complete picture of the attack with rich investigative details1.
Option A is incorrect, because alerts with the same host are not necessarily grouped together into one incident in a given time frame. Alerts with the same host may belong to different causality chains, or may be unrelated to any malicious activity. For example, if a host has a malware infection and a network anomaly, these alerts may not be grouped into the same incident, unless they are part of the same attack.
Option B is incorrect, because alerts that occur within a three hour time frame are not always grouped together into one incident. The time frame is not the only criterion for grouping alerts into incidents. Alerts that occur within a three hour time frame may belong to different causality chains, or may be unrelated to any malicious activity. For example, if a host has a file download and a registry modification within a three hour time frame, these alerts may not be grouped into the same incident, unless they are part of the same attack.
Option D is incorrect, because every alert does not create a new incident. Creating a new incident for every alert would result in alert fatigue and inefficient investigations. Cortex XDR aims to reduce the number of incidents by grouping related alerts into one incident, based on their causality chains and other attributes.
Reference:
Palo Alto Networks Certified Detection and Remediation Analyst (PCDRA) Study Guide, page 9 Palo Alto Networks Cortex XDR Documentation, Incident Management Overview2 Cortex XDR: Stop Breaches with AI-Powered Cybersecurity1


NEW QUESTION # 20
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