Palo Alto Networks XDR-Analyst Practice Exam Questions & Answers

When investigating security events, the feature in Cortex XDR that is useful for reverting the changes on the endpoint isRemediation Suggestions. 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.Reference:

Remediation Suggestions

Apply Remediation Suggestions

To ingest external logs from various vendors, you need a Cortex XDR Pro per TB license. This license allows you to collect and analyze logs from Palo Alto Networks and third-party sources, such as firewalls, proxies, endpoints, cloud services, and more. You can use the Log Forwarding app to forward logs from the Logging Service to an external syslog receiver. The Cortex XDR Pro per Endpoint license only supports logs from Cortex XDR agents installed on endpoints. The Cortex XDR Vendor Agnostic Pro and Cortex XDR Cloud per Host licenses do not exist.Reference:

Features by Cortex XDR License Type

Log Forwarding App for Cortex XDR Analytics

SaaS Log Collection

File Search and Destroy is a feature of Cortex XDR that allows you to search for and remove malicious files from endpoints. You can use this feature to find files by their hash, full path, or partial path using regex parameters. You can then select the files from the search results and destroy them by hash or by path. When you destroy a file by hash, all the file instances on the endpoint are removed. File Search and Destroy is useful for quickly responding to threats and preventing further damage.Reference:

Search and Destroy Malicious Files

Cortex XDR Pro Administrator Guide

The Live Terminal feature in Cortex XDR allows you to initiate a remote connection to an endpoint and perform various actions such as running commands, uploading and downloading files, and terminating processes. You can disable the ability to use the Live Terminal feature in Cortex XDR by configuring the Agent Settings Profile. The Agent Settings Profile defines the behavior and functionality of the Cortex XDR agent on the endpoint. You can create different profiles for different groups of endpoints and assign them accordingly. To disable the Live Terminal feature, you need to uncheck theEnable Live Terminaloption in the Agent Settings Profile and save the changes. This will prevent the Cortex XDR agent from accepting any Live Terminal requests from the Cortex XDR management console.Reference:

Live Terminal: This document explains how to use the Live Terminal feature to investigate and respond to security events on Windows endpoints.

Agent Settings Profile: This document describes how to create and manage Agent Settings Profiles to define the behavior and functionality of the Cortex XDR agent on the endpoint.

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

The policy exception that applies to the following description is B, local file threat examination exception. A local file threat examination exception is an exception that allows you to exclude specific files or folders from being scanned by the Cortex XDR agent for malware or threats. You can use this exception to prevent false positives, performance issues, or compatibility problems with legitimate files or applications. You can define the local file threat examination exception by file name, file path, file hash, or digital signer. For example, you can create a local file threat examination exception for specific PHP files by entering their file names or paths in the exception configuration.Reference:

Local File Threat Examination Exceptions

Create a Local File Threat Examination Exception

A common sequence of cyber-attack tactics is based on the Cyber Kill Chain model, which describes the stages of a cyber intrusion from the perspective of the attacker. The Cyber Kill Chain model consists of seven phases: reconnaissance, weaponization, delivery, exploitation, installation, command and control, and actions on the objective. These phases are briefly explained below:

Reconnaissance: The attacker gathers information about the target, such as its network, systems, vulnerabilities, employees, and business operations. The attacker may use various methods, such as scanning, phishing, or searching open sources, to collect data that can help them plan the attack.

Weaponization: The attacker creates or obtains a malicious payload, such as malware, exploit, or script, that can be used to compromise the target. The attacker may also embed the payload into a delivery mechanism, such as an email attachment, a web link, or a removable media.

Delivery: The attacker sends or delivers the weaponized payload to the target, either directly or indirectly. The attacker may use various channels, such as email, web, or physical access, to reach the target's network or system.

Exploitation: The attacker exploits a vulnerability or weakness in the target's network or system to execute the payload. The vulnerability may be technical, such as a software flaw, or human, such as a social engineering trick.

Installation: The attacker installs or drops additional malware or tools on the target's network or system to establish a foothold and maintain persistence. The attacker may use various techniques, such as registry modification, file manipulation, or process injection, to hide their presence and evade detection.

Command and Control: The attacker establishes a communication channel between the compromised target and a remote server or controller. The attacker may use various protocols, such as HTTP, DNS, or IRC, to send commands and receive data from the target.

Actions on the objective: The attacker performs the final actions that achieve their goal, such as stealing data, destroying files, encrypting systems, or disrupting services. The attacker may also try to move laterally within the target's network or system to access more resources or data.

Cyber Kill Chain: This document explains the Cyber Kill Chain model and how it can be used to analyze and respond to cyberattacks.

Cyber Attack Tactics: This document provides an overview of some common cyber attack tactics and examples of how they are used by threat actors.