Fortinet FCSS_SOC_AN-7.4 Practice Test - Questions Answers, Page 2

Understanding the MITRE ATT&CK Tactics:

The MITRE ATT&CK framework categorizes various tactics and techniques used by adversaries to achieve their objectives.

Tactics represent the objectives of an attack, while techniques represent how those objectives are achieved.

Analyzing the Incident Report:

Phishing Email Campaign: This tactic is commonly used for gaining initial access to a system.

Malicious Link and RAT Download: Clicking a malicious link and downloading a RAT is indicative of establishing initial access.

Remote Access Trojan (RAT): Once installed, the RAT allows attackers to maintain access over an extended period, which is a persistence tactic.

Mapping to MITRE ATT&CK Tactics:

Initial Access:

This tactic covers techniques used to gain an initial foothold within a network.

Techniques include phishing and exploiting external remote services.

The phishing campaign and malicious link click fit this category.

Persistence:

This tactic includes methods that adversaries use to maintain their foothold.

Techniques include installing malware that can survive reboots and persist on the system.

The RAT provides persistent remote access, fitting this tactic.

Exclusions:

Defense Evasion:

This involves techniques to avoid detection and evade defenses.

While potentially relevant in a broader context, the incident report does not specifically describe actions taken to evade defenses.

Lateral Movement:

This involves moving through the network to other systems.

The report does not indicate actions beyond initial access and maintaining that access.

Conclusion:

The incident report captures the tactics of Initial Access and Persistence.

MITRE ATT&CK Framework documentation on Initial Access and Persistence tactics.

Incident analysis and mapping to MITRE ATT&CK tactics.

Understanding the Playbook Requirements:

The SOC analyst needs to design a playbook that filters for high severity events.

The playbook must also attach the event information to an existing incident.

Analyzing the Provided Exhibit:

The exhibit shows the available actions for a local connector within the playbook.

Actions listed include:

Update Asset and Identity

Get Events

Get Endpoint Vulnerabilities

Create Incident

Update Incident

Attach Data to Incident

Run Report

Get EPEU from Incident

Evaluating the Options:

Get Events: This action retrieves events but does not attach them to an incident.

Update Incident: This action updates an existing incident but is not specifically for attaching event data.

Update Asset and Identity: This action updates asset and identity information, not relevant for attaching event data to an incident.

Attach Data to Incident: This action is explicitly designed to attach additional data, such as event information, to an existing incident.

Conclusion:

The correct action to use in the playbook for filtering high severity events and attaching the event information to an incident is Attach Data to Incident.

Fortinet Documentation on Playbook Actions and Connectors.

Best Practices for Incident Management and Playbook Design in SOC Operations.

NIST Cybersecurity Framework Overview:

The NIST Cybersecurity Framework provides a structured approach for managing and mitigating cybersecurity risks. Incident handling is divided into several phases to systematically address and resolve incidents.

Incident Handling Phases:

Preparation: Establishing and maintaining an incident response capability.

Detection and Analysis: Identifying and investigating suspicious activities to confirm an incident.

Containment, Eradication, and Recovery:

Containment: Limiting the impact of the incident.

Eradication: Removing the root cause of the incident.

Recovery: Restoring systems to normal operation.

Containment Phase:

The primary goal of the containment phase is to prevent the incident from spreading and causing further damage.

Quarantining a Compromised Host:

Quarantining involves isolating the compromised host from the rest of the network to prevent adversaries from moving laterally and causing more harm.

Techniques include network segmentation, disabling network interfaces, and applying access controls.

Detailed Process:

Step 1: Detect the compromised host through monitoring and analysis.

Step 2: Assess the impact and scope of the compromise.

Step 3: Quarantine the compromised host to prevent further spread. This can involve disconnecting the host from the network or applying strict network segmentation.

Step 4: Document the containment actions and proceed to the eradication phase to remove the threat completely.

Step 5: After eradication, initiate the recovery phase to restore normal operations and ensure that the host is securely reintegrated into the network.

Importance of Containment:

Containment is critical in mitigating the immediate impact of an incident and preventing further damage. It buys time for responders to investigate and remediate the threat effectively.

NIST Special Publication 800-61, 'Computer Security Incident Handling Guide'

SANS Institute, 'Incident Handler's Handbook'

By quarantining a compromised host during the containment phase, organizations can effectively limit the spread of the incident and protect their network from further compromise.

Overview of Automation Stitches:

Automation stitches in FortiAnalyzer are predefined sets of automated actions triggered by specific events. These actions help in automating responses to security incidents, improving efficiency, and reducing the response time.

FortiAnalyzer Connectors:

FortiAnalyzer integrates with various Fortinet products and other third-party solutions through connectors. These connectors facilitate communication and data exchange, enabling centralized management and automation.

Available Connectors for Automation Stitches:

FortiCASB:

FortiCASB is a Cloud Access Security Broker that helps secure SaaS applications. However, it is not typically used for running automation stitches within FortiAnalyzer.

FortiMail:

FortiMail is an email security solution. While it can send logs and events to FortiAnalyzer, it is not primarily used for running automation stitches.

Local:

The local connector refers to FortiAnalyzer's ability to handle logs and events generated by itself. This is useful for internal processes but not specifically for integrating with other Fortinet devices for automation stitches.

FortiOS:

FortiOS is the operating system that runs on FortiGate firewalls. FortiAnalyzer can use the FortiOS connector to communicate with FortiGate devices and run automation stitches. This allows FortiAnalyzer to send commands to FortiGate, triggering predefined actions in response to specific events.

Detailed Process:

Step 1: Configure the FortiOS connector in FortiAnalyzer to establish communication with FortiGate devices.

Step 2: Define automation stitches within FortiAnalyzer that specify the actions to be taken when certain events occur.

Step 3: When a triggering event is detected, FortiAnalyzer uses the FortiOS connector to send the necessary commands to the FortiGate device.

Step 4: FortiGate executes the commands, performing the predefined actions such as blocking an IP address, updating firewall rules, or sending alerts.

Conclusion:

The FortiOS connector is specifically designed for integration with FortiGate devices, enabling FortiAnalyzer to execute automation stitches effectively.

Fortinet FortiOS Administration Guide: Details on configuring and using automation stitches.

Fortinet FortiAnalyzer Administration Guide: Information on connectors and integration options.

By utilizing the FortiOS connector, FortiAnalyzer can run automation stitches to enhance the security posture and response capabilities within a network.

Understanding the Threat Hunting Data:

The Threat Hunting Monitor in the provided exhibits shows various application services, their usage counts, and data metrics such as sent bytes, average sent bytes, and maximum sent bytes.

The second part of the exhibit lists connection attempts from a specific source IP (10.0.1.10) to a destination IP (8.8.8.8), with repeated 'Connection Failed' messages.

Analyzing the Application Services:

DNS is the top application service with a significantly high count (251,400) and notable sent bytes (9.1 MB).

This large volume of DNS traffic is unusual for regular DNS queries and can indicate the presence of DNS tunneling.

DNS Tunneling:

DNS tunneling is a technique used by attackers to bypass security controls by encoding data within DNS queries and responses. This allows them to extract data from the local network without detection.

The high volume of DNS traffic, combined with the detailed metrics, suggests that DNS tunneling might be in use.

Connection Failures to 8.8.8.8:

The repeated connection attempts from the source IP (10.0.1.10) to the destination IP (8.8.8.8) with connection failures can indicate an attempt to communicate with an external server.

Google DNS (8.8.8.8) is often used for DNS tunneling due to its reliability and global reach.

Conclusion:

Given the significant DNS traffic and the nature of the connection attempts, it is reasonable to conclude that DNS tunneling is being used to extract confidential data from the local network.

Why Other Options are Less Likely:

Spearphishing (A): There is no evidence from the provided data that points to spearphishing attempts, such as email logs or phishing indicators.

Reconnaissance (C): The data does not indicate typical reconnaissance activities, such as scanning or probing mail servers.

FTP C&C (D): There is no evidence of FTP traffic or command-and-control communications using FTP in the provided data.

SANS Institute: 'DNS Tunneling: How to Detect Data Exfiltration and Tunneling Through DNS Queries' SANS DNS Tunneling

OWASP: 'DNS Tunneling' OWASP DNS Tunneling

By analyzing the provided threat hunting data, it is evident that DNS tunneling is being used to exfiltrate data, indicating a sophisticated method of extracting confidential information from the network.

Understanding FortiAnalyzer Data Policy and Disk Utilization:

FortiAnalyzer uses data policies to manage log storage, retention, and disk utilization.

The Data Policy section indicates how long logs are kept for analytics and archive purposes.

The Disk Utilization section specifies the allocated disk space and the proportions used for analytics and archive, as well as when alerts should be triggered based on disk usage.

Analyzing the Provided Exhibit:

Keep Logs for Analytics: 60 Days

Keep Logs for Archive: 120 Days

Disk Allocation: 300 GB (with a maximum of 441 GB available)

Analytics: Archive Ratio: 30% : 70%

Alert and Delete When Usage Reaches: 90%

Potential Problems Identification:

Disk Space Allocation: The allocated disk space is 300 GB out of a possible 441 GB, which might not be insufficient if the log volume is high, but it is not the primary concern based on the given data.

Analytics-to-Archive Ratio: The ratio of 30% for analytics and 70% for archive is unconventional. Typically, a higher percentage is allocated for analytics since real-time or recent data analysis is often prioritized. A common configuration might be a 70% analytics and 30% archive ratio. The misconfigured ratio can lead to insufficient space for analytics, causing issues with real-time monitoring and analysis.

Retention Periods: While the retention periods could be seen as lengthy, they are not necessarily indicative of a problem without knowing the specific log volume and compliance requirements. The length of these periods can vary based on organizational needs and legal requirements.

Conclusion:

Based on the analysis, the primary issue observed is the analytics-to-archive ratio being misconfigured. This misconfiguration can significantly impact the effectiveness of the FortiAnalyzer in real-time log analysis, potentially leading to delayed threat detection and response.

Fortinet Documentation on FortiAnalyzer Data Policies and Disk Management.

Best Practices for FortiAnalyzer Log Management and Disk Utilization.

Understanding the MITRE ATT&CK Matrix:

The MITRE ATT&CK framework is a knowledge base of adversary tactics and techniques based on real-world observations.

Each tactic in the matrix represents the 'why' of an attack technique, while each technique represents 'how' an adversary achieves a tactic.

Analyzing the Provided Exhibit:

The exhibit shows part of the MITRE ATT&CK Enterprise matrix as displayed on FortiAnalyzer.

The focus is on technique T1071 (Application Layer Protocol), which has subtechniques labeled T1071.001, T1071.002, T1071.003, and T1071.004.

Each subtechnique specifies a different type of application layer protocol used for Command and Control (C2):

T1071.001 Web Protocols

T1071.002 File Transfer Protocols

T1071.003 Mail Protocols

T1071.004 DNS

Identifying Key Points:

Subtechniques under T1071: There are four subtechniques listed under the primary technique T1071, confirming that statement B is true.

Event Handlers for T1071: FortiAnalyzer includes event handlers for monitoring various tactics and techniques. The presence of event handlers for tactic T1071 suggests active monitoring and alerting for these specific subtechniques, confirming that statement C is true.

Misconceptions Clarified:

Statement A (four techniques under tactic T1071) is incorrect because T1071 is a single technique with four subtechniques.

Statement D (15 events associated with the tactic) is misleading. The number 15 refers to the techniques under the Application Layer Protocol, not directly related to the number of events.

Conclusion:

The accurate interpretation of the exhibit confirms that there are four subtechniques under technique T1071 and that there are event handlers covering tactic T1071.

MITRE ATT&CK Framework documentation.

FortiAnalyzer Event Handling and MITRE ATT&CK Integration guides.