NSE7_SOC_AR-7.6 Exam Dumps - Fortinet Certified Professional Security Operations Questions and Answers

Understanding the Issue:

The custom event handler for detecting SMTP reconnaissance activities is generating a large number of events.

This high volume of events is overwhelming the notification system, leading to potential alert fatigue and inefficiency in incident response.

Event Handler Configuration:

Event handlers are configured to trigger alerts based on specific criteria.

The frequency and volume of these alerts can be controlled by adjusting the trigger conditions.

Possible Solutions:

A. Increase the trigger count so that it identifies and reduces the count triggered by a particular group:

By increasing the trigger count, you ensure that the event handler only generates alerts after a higher threshold of activity is detected.

This reduces the number of events generated and helps prevent overwhelming the notification system.

Selected as it effectively manages the volume of generated events.

B. Disable the custom event handler because it is not working as expected:

Disabling the event handler is not a practical solution as it would completely stop monitoring for SMTP reconnaissance activities.

Not selected as it does not address the issue of fine-tuning the event generation.

C. Decrease the time range that the custom event handler covers during the attack:

Reducing the time range might help in some cases, but it could also lead to missing important activities if the attack spans a longer period.

Not selected as it could lead to underreporting of significant events.

D. Increase the log field value so that it looks for more unique field values when it creates the event:

Adjusting the log field value might refine the event criteria, but it does not directly control the volume of alerts.

Not selected as it is not the most effective way to manage event volume.

Implementation Steps:

Step 1: Access the event handler configuration in FortiAnalyzer.

Step 2: Locate the trigger count setting within the custom event handler for SMTP reconnaissance.

Step 3: Increase the trigger count to a higher value that balances alert sensitivity and volume.

Step 4: Save the configuration and monitor the event generation to ensure it aligns with expected levels.

Conclusion:

By increasing the trigger count, you can effectively reduce the number of events generated by the custom event handler, preventing the notification system from being overwhelmed.

Fortinet Documentation on Event Handlers and Configuration FortiAnalyzer Administration Guide

Best Practices for Event Management Fortinet Knowledge Base

By increasing the trigger count in the custom event handler, you can manage the volume of generated events and prevent the notification system from being overwhelmed.

1.FortiSIEM incident2.FortiSOAR alert3.FortiSOAR indicator4.FortiSOAR incident

In the standard integration betweenFortiSIEM 7.3andFortiSOAR 7.6, the data ingestion wizard follows a specific object mapping hierarchy to ensure that high-fidelity security events are managed correctly.

Step 1: FortiSIEM incident:The workflow begins in FortiSIEM. When a correlation rule triggers, it generates anIncident(not just a raw log). The FortiSOAR connector polls the FortiSIEM API specifically for these incident records.

Step 2: FortiSOAR alert:By default, ingested FortiSIEM incidents are mapped to theAlertsmodule in FortiSOAR. This serves as a "triage" layer where automated playbooks can perform initial analysis before a human determines if it warrants a full-scale investigation.

Step 3: FortiSOAR indicator:As the alert is processed (either during ingestion or immediately after), the playbook extracts technical artifacts (IPs, hashes, URLs) and createsIndicatorrecords. This allows for automated threat intelligence lookups and cross-referencing against other alerts.

Step 4: FortiSOAR incident:If the alert is validated (either through automated playbook scoring or manual analyst review), it is promoted to aFortiSOAR Incident. This represents a confirmed security issue that requires formal tracking, remediation, and reporting.

Understanding FortiAnalyzer Features:

FortiAnalyzer includes several features for log analytics, monitoring, and incident response.

The SIEM (Security Information and Event Management) database is used to store and analyze log data, providing advanced analytics and insights.

Evaluating the Options:

Option A: Threat hunting

Threat hunting involves proactively searching through log data to detect and isolate threats that may not be captured by automated tools.

This feature leverages the SIEM database to perform advanced log analytics, correlate events, and identify potential security incidents.

Option B: Asset Identity Center

This feature focuses on asset and identity management rather than advanced log analytics.

Option C: Event monitor

While the event monitor provides real-time monitoring and alerting based on logs, it does not specifically utilize advanced log analytics in the way the SIEM database does for threat hunting.

Option D: Outbreak alerts

Outbreak alerts provide notifications about widespread security incidents but are not directly related to advanced log analytics using the SIEM database.

Conclusion:

The feature that uses the SIEM database for advanced log analytics and monitoring in FortiAnalyzer isThreat hunting.

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 isAttach Data to Incident.

Understanding the Playbook Configuration:

The playbook "FortiMail Sender Blocklist" is designed to manually input email addresses or IP addresses and add them to the FortiMail block list.

The playbook uses a FortiMail connector with the action ADD_SENDER_TO_BLOCKLIST.

Analyzing the Playbook Execution:

The configuration and actions provided show that the playbook is straightforward, starting with an ON_DEMAND STARTER and proceeding to the ADD_SENDER_TO_BLOCKLIST action.

The action description indicates it is intended to block senders based on email addresses or domains.

Evaluating the Options:

Option A:Using GET_EMAIL_STATISTICS is not required for the task of adding senders to a block list. This action retrieves email statistics and is unrelated to the block list configuration.

Option B:The primary reason for failure could be the requirement for a fully qualified domain name (FQDN). FortiMail typically expects precise information to ensure the correct entries are added to the block list.

Option C:The trust level of the client-side browser with FortiAnalyzer's self-signed certificate does not impact the execution of the playbook on FortiMail.

Option D:Incorrect connector credentials would result in an authentication error, but the problem described is more likely related to the format of the input data.

Conclusion:

The FortiMail Sender Blocklist playbook execution is failing because FortiMail is expecting a fully qualified domain name (FQDN).

Role of a Threat Hunter:

A threat hunter proactively searches for cyber threats that have evaded traditional security defenses. This role is crucial in identifying sophisticated and stealthy adversaries that bypass automated detection systems.

Key Responsibilities:

Proactive Threat Identification:

Threat hunters use advanced tools and techniques to identify hidden threats within the network. This includes analyzing anomalies, investigating unusual behaviors, and utilizing threat intelligence.

Comprehensive and Detailed Explanation From FortiSOAR 7.6., FortiSIEM 7.3 Exact Extract study guide:

In the context of theAttack Surface Managementmodules within theFortiSIEM 7.3andFortiSOAR 7.6security frameworks, "reducing the attack surface" refers to the process of minimizing the number of possible entry points (attack vectors) that an unauthorized user could exploit.

Definition of Attack Surface:The attack surface consists of all the different points where an attacker could try to enter data to or extract data from an environment. This includes hardware, software, SaaS components, and network interfaces.

Effectiveness of Asset Removal:Removing unused devices, services, or software is the most fundamental and effective way to reduce the attack surface. By decommissioning an unused server or workstation (as shown in the LAN/Server diagram), you completely eliminate all potential vulnerabilities associated with that asset, its operating system, and its active services.

Contrast with other methods:

Forwarding logs (A)andDeep Inspection (B)aredetectiveandpreventivecontrols, respectively. They help manage the risk within the existing attack surface but do not actually shrink the size of the surface itself.

Macrosegmentation (C)limits the "blast radius" or lateral movement after a compromise has occurred. While it secures the interior, it does not remove the initial entry points that define the external attack surface.

Why other options are incorrect:

Forwarding logs (A):This increases visibility but does not remove potential vulnerabilities.

Deep Inspection (B):This is a security measure to detect threats within existing traffic but does not eliminate the target (the device) itself.

Implement macrosegmentation (C):While highly recommended for security, it is a network architecture strategy to contain threats, whereas the prompt asks for the most effective method toreducethe surface. Removing the asset entirely (D) is the most absolute reduction possible.