Splunk

Data Manipulation in Splunk: PART II

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This entry is part 10 of 4 in the series Splunk 101

Views: 8Event Boundaries Event breaking in Splunk refers to breaking raw data into individual events based on specified boundaries. Splunk uses event-breaking rules to identify where one event ends, and the next begins. In the PART I of this series, we have created a TestApp which is placed at /opt/splunk/etc/apps/TestApp/. Please follow this link to read the PART I article. … Read more

Data Manipulation in Splunk: PART I

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This entry is part 9 of 4 in the series Splunk 101

Views: 10Splunk Log Parsing and Transformation Configuration Splunk needs to be properly configured to parse and transform the logs appropriately. Some of the issues being highlighted are: Splunk Data Parsing Guide Data parsing in Splunk involves extracting relevant fields and transforming the data into a structured format for efficient analysis. Step 1: Understand the Data … Read more

Regular Expressions

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This entry is part 8 of 4 in the series Splunk 101

Views: 5Regular Expressions: Charsets Searching for Specific Strings Charsets in Regex Using Ranges Matching and Excluding Patterns Important Notes Regular Expressions: Wildcards and Optional Characters Wildcard Matching (. Dot) Optional Characters (? Question Mark) Matching a Literal Dot (\.) Regular Expressions: Line Anchors and Grouping Line Anchors Important Note: Grouping and Either/Or (|) Repeating Groups

Splunk SIEM: Search Processing Language (SPL) Basics

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This entry is part 7 of 4 in the series Splunk 101

Views: 91Splunk Search Processing Language comprises of multiple functions, operators and commands that are used together to form a simple to complex search and get the desired results from the ingested logs. Main components of SPL Search Field Operators Comparison Operators These operators are used to compare the values against the fields. Field Name Operator … Read more

 Ship OPNSense Firewall Logs To Splunk SIEM

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Views: 82Shipping OPNsense firewall logs to Splunk centralizes log management, allowing for seamless consolidation with other network and system logs. This integration enhances visibility into network traffic, enabling the identification of threats like port scans, malware communication, or brute force attacks. By correlating OPNsense logs with logs from other sources, organizations can perform faster root … Read more

Log Analysis: Basics

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This entry is part 17 of 22 in the series Threat Detection Engineering

Views: 46Understanding Logs in Infrastructure Systems Logs and Their Role Log Analysis What Are Logs? Definition Log Entry Components Sample Log Analysis Importance of Logs 1. System Troubleshooting 2. Cybersecurity Incident Response 3. Threat Hunting 4. Compliance Types of Logs in Computing Environments Integrative Analysis Data Visualization Data visualization tools, such as Kibana (of the … Read more

Splunk SIEM: Exploring SPL

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This entry is part 16 of 22 in the series Threat Detection Engineering

Views: 21Splunk Search & Reporting App Overview The Search & Reporting App is the primary interface on Splunk’s Home page used for searching and analyzing data. This app provides several essential functionalities to enhance the search experience for analysts. Search & Reporting App is the default interface used to search and analyze the data on the Splunk Home … Read more

Splunk: SPL Cheat Sheet for SOC Analysts

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Views: 59Splunk Cheat Sheet Query to identify failed login attempts: Query to identify privilege escalation attempts: Query to identify failed SSH attempts: Query to identify successful SSH attempts: Query to identify unusual network traffic: Query to identify suspicious processes: Query to identify brute force attacks: Query to identify privilege escalation attempts on Windows systems: Query … Read more