C1000-162 Exam Dumps - IBM Security QRadar SIEM V7.5 Analysis

Behavioral rule test parameters in QRadar SIEM are crucial for configuring how anomaly detection functions within rules. Here's a breakdown of each parameter:

Season: This is the most important parameter. It defines the historical time period used to establish a baseline of "normal" behavior. Consider the nature of the traffic you're monitoring when choosing a season:

Network traffic with human interaction: A season of 1 week might be appropriate.

Daily patterns: A season of 24 hours would be more suitable.

Current traffic level: Represents the current value of the property being monitored by the rule (e.g., number of login failures, bandwidth usage, etc.).

Predicted value: This is an estimation of what the traffic level "should" be, based on the established season and historical trends.

How the Parameters Work Together

Behavioral rules primarily identify deviations between the Current traffic level and the Predicted value within the context of the defined Season. Significant discrepancies can trigger alerts.

References

IBM Security QRadar Documentation - Anomaly Detection Rules: (https://www.ibm.com/docs/en/qradar-on-cloud?topic=rules-anomaly-detection ). Search for "behavioral rule test parameter options" within the relevant documentation for QRadar SIEM V7.5.

In the Dynamic Search window on the Admin tab of QRadar, the available data sources include "Assets" and "Offenses." These options allow administrators and analysts to construct queries based on asset information or offense data, enabling targeted searches and analyses tailored to specific security concerns within the organization​​.

Indexing Principle: QRadar creates indexes on default properties to quickly locate data matching your queries.

Lookup vs. Scan: Instead of scanning all raw data, QRadar utilizes the index like a 'phonebook' for targeted lookups.

Optimization: Searching using indexed properties dramatically decreases the amount of data QRadar needs to process.

Use Case Manager: This app is specifically designed for investigation and analysis of offenses within QRadar. It offers more focused tools for this task than general Reports.

Active Rules: This view within the Use Case Manager provides insights into rules that directly triggered offenses. This is essential for filtering down to our target rules.

Filtering:

Start Date: Allows you to limit the analysis timeframe to the "previous week" as specified in the question.

Closure Reason: Crucially, this lets you isolate offenses marked as "False Positive" or "Tuned" – the core of the question.

In IBM Security QRadar SIEM V7.5, to search for all events containing a specific keyword such as "access", an analyst should navigate to the "Log Activity" tab. This section of the QRadar interface is dedicated to viewing and analyzing log data collected from various sources. By running a quick search with the "access" keyword in the Log Activity tab, the analyst can filter out events that contain this term in any part of the log data. This functionality is crucial for identifying specific activities or incidents within the vast amounts of log data QRadar processes, allowing analysts to quickly hone in on relevant information for further investigation or action.