Hands-on with Splunk SIEM: Upskilling Your Security Career

This article provides a comprehensive guide to mastering Splunk SIEM, covering log analysis, security investigation, threat detection, and threat hunting. Below are the verified resources, commands, and steps to help you practice and enhance your skills.

You Should Know:

Basics of Splunk

• Splunk SIEM Crash Course: Link
• Splunk Cheat Sheet: Query, SPL, RegEx, & Commands: Link

Practice Commands:

• Search logs: `index=main | head 10`
• Filter logs: `index=main sourcetype=access_* | top uri`
• Use regex: `index=main | regex _raw=”.*error.*”`

Lab Set Up

• Splunk Lab Set Up: Link
• Download Sample DNS Log File: Link
• Download Sample HTTP Log File: Link

Practice Commands:

• Ingest logs: `splunk add oneshot /path/to/logfile -index main`
• Verify ingestion: `index=main | stats count`

Log Analysis with Splunk

• Analyzing DNS Log Files Using Splunk SIEM: Link
• Analyzing FTP Log Files Using Splunk SIEM: Link
• Analyzing HTTP Log Files Using Splunk SIEM: Link

Practice Commands:

• DNS query analysis: `index=dns | stats count by query`
• HTTP status code analysis: `index=http | stats count by status`
• FTP login attempts: `index=ftp | stats count by user`

Threat Detection

• Creating Correlation Events in Splunk using Alerts: Link
• Splunk Detection and Playbook Example: Link

Practice Commands:

• Create alert: `index=main sourcetype=access_* status=500 | stats count by src_ip`
• Monitor failed logins: `index=main sourcetype=login_failed | stats count by user`

Security Investigation

• Scenario-based Splunk Investigation: Link

Practice Commands:

• Investigate suspicious IP: `index=main src_ip=”192.168.1.100″ | table _time, uri, status`
• Track user activity: `index=main user=”admin” | stats count by action`

Threat Hunting

• Splunk Queries for Threat Hunters: Link
• Official Threat Hunting Tutorial by Splunk: Link

Practice Commands:

• Hunt for unusual processes: `index=main sourcetype=process | stats count by process_name`
• Detect lateral movement: `index=main dest_ip=”192.168.1.*” | stats count by src_ip, dest_ip`

What Undercode Say:

Splunk is a powerful tool for cybersecurity professionals, enabling efficient log analysis, threat detection, and incident response. By practicing the commands and steps outlined above, you can enhance your ability to investigate security incidents and hunt for threats. For further learning, explore the provided links and experiment with real-world datasets.

Additional Linux/Windows Commands for Cybersecurity:

• Linux: `grep “error” /var/log/syslog` (search logs for errors)
• Windows: `Get-WinEvent -LogName Security | Where-Object {$_.ID -eq 4625}` (check failed login attempts)
• Linux: `netstat -tuln` (monitor open ports)
• Windows: `netsh advfirewall show allprofiles` (view firewall settings)

Mastering Splunk and these commands will significantly boost your cybersecurity expertise.

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References:

Reported By: Ouardi Mohamed – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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