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Palo Alto Networks XDR-Analyst Prüfungsplan:

Thema	Einzelheiten
Thema 1	Data Analysis: This domain encompasses querying data with XQL language, utilizing query templates and libraries, working with lookup tables, hunting for IOCs, using Cortex XDR dashboards, and understanding data retention and Host Insights.
Thema 2	Incident Handling and Response: This domain focuses on investigating alerts using forensics, causality chains and timelines, analyzing security incidents, executing response actions including automated remediation, and managing exclusions.
Thema 3	Alerting and Detection Processes: This domain covers identifying alert types and sources, prioritizing alerts through scoring and custom configurations, creating incidents, and grouping alerts with data stitching techniques.
Thema 4	Endpoint Security Management: This domain addresses managing endpoint prevention profiles and policies, validating agent operational states, and assessing the impact of agent versions and content updates.

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Palo Alto Networks XDR Analyst XDR-Analyst Prüfungsfragen mit Lösungen (Q13-Q18):

13. Frage
In the deployment of which Broker VM applet are you required to install a strong cipher SHA256-based SSL certificate?

A. Agent Installer and Content Caching
B. Syslog Collector
C. CSV Collector
D. Agent Proxy

Antwort: A

Begründung:
The Agent Installer and Content Caching applet of the Broker VM is used to download and cache the Cortex XDR agent installation packages and content updates from Palo Alto Networks servers. This applet also acts as a proxy server for the Cortex XDR agents to communicate with the Cortex Data Lake and the Cortex XDR management console. To ensure secure communication between the Broker VM and the Cortex XDR agents, you are required to install a strong cipher SHA256-based SSL certificate on the Broker VM. The SSL certificate must have a common name or subject alternative name that matches the Broker VM FQDN or IP address. The SSL certificate must also be trusted by the Cortex XDR agents, either by using a certificate signed by a public CA or by manually installing the certificate on the endpoints. Reference:
Agent Installer and Content Caching
Install an SSL Certificate on the Broker VM

14. Frage
Which Exploit Prevention Module (EPM) provides better entropy for randomization of memory locations?

A. DLL Security
B. Memory Limit Heap spray check
C. JIT Mitigation
D. UASLR

Antwort: D

Begründung:
UASLR stands for User Address Space Layout Randomization, which is a feature of Exploit Prevention Module (EPM) that provides better entropy for randomization of memory locations. UASLR adds entropy to the base address of the executable image and the heap, making it harder for attackers to predict the memory layout of a process. UASLR is enabled by default for all processes, but can be disabled or customized for specific applications using the EPM policy settings. Reference:
Exploit Prevention Module (EPM) entropy randomization memory locations
Exploit protection reference

15. Frage
Which license is required when deploying Cortex XDR agent on Kubernetes Clusters as a DaemonSet?

A. Cortex XDR Cloud per Host
B. Cortex XDR Pro per TB
C. Cortex XDR Pro per Endpoint
D. Host Insights

Antwort: A

Begründung:
When deploying Cortex XDR agent on Kubernetes clusters as a DaemonSet, the license required is Cortex XDR Cloud per Host. This license allows you to protect and monitor your cloud workloads, such as Kubernetes clusters, containers, and serverless functions, using Cortex XDR. With Cortex XDR Cloud per Host license, you can deploy Cortex XDR agents as DaemonSets on your Kubernetes clusters, which ensures that every node in the cluster runs a copy of the agent. The Cortex XDR agent collects and sends data from the Kubernetes cluster, such as pod events, container logs, and network traffic, to the Cortex Data Lake for analysis and correlation. Cortex XDR can then detect and respond to threats across your cloud environment, and provide visibility and context into your cloud workloads. The Cortex XDR Cloud per Host license is based on the number of hosts that run the Cortex XDR agent, regardless of the number of containers or functions on each host. A host is defined as a virtual machine, a physical server, or a Kubernetes node that runs the Cortex XDR agent. You can read more about the Cortex XDR Cloud per Host license and how to deploy Cortex XDR agent on Kubernetes clusters here1 and here2. Reference:
Cortex XDR Cloud per Host License
Deploy Cortex XDR Agent on Kubernetes Clusters as a DaemonSet

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

Antwort: B

Begründung:
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

17. Frage
Which of the following represents the correct relation of alerts to incidents?

A. Only alerts with the same host are grouped together into one Incident in a given time frame.
B. Every alert creates a new Incident.
C. Alerts with same causality chains that occur within a given time frame are grouped together into an Incident.
D. Alerts that occur within a three-hour time frame are grouped together into one Incident.

Antwort: C

Begründung:
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

18. Frage
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