64 SOC Incident Response Playbooks: A Cybersecurity Essential

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Introduction:

Security Operations Center (SOC) teams face an ever-evolving threat landscape, requiring structured and repeatable processes to mitigate risks effectively. Izzmier Izzuddin Zulkepli’s 64 SOC Incident Response Playbooks provide a comprehensive framework for handling cyber threats, mapped to MITRE ATT&CK techniques, detection sources, and response phases. This article explores key technical takeaways, including verified commands and procedures from these playbooks.

Learning Objectives:

  • Understand critical SOC incident response workflows.
  • Learn actionable Linux/Windows commands for threat detection and mitigation.
  • Apply MITRE ATT&CK mappings to real-world security incidents.

1. Detecting Suspicious Process Execution (Windows/Linux)

Windows (PowerShell):

Get-Process | Where-Object { $_.CPU -gt 90 } | Select-Object ProcessName, Id, CPU

Linux:

ps aux --sort=-%cpu | head -n 5

What This Does:

  • Identifies high-CPU processes (potential malware or cryptominers).
  • Steps:
  1. Run the command in an elevated PowerShell or terminal.
  2. Investigate unexpected processes (e.g., `svchost` with abnormal CPU usage).
  3. Terminate malicious processes using `Stop-Process -Id 
    ` (Windows) or `kill -9 [bash]` (Linux). </li>
</ol>

<h2 style="color: yellow;"> 2. Analyzing Network Anomalies with TCPDump</h2>

<h2 style="color: yellow;">Linux Command:</h2>

[bash]
sudo tcpdump -i eth0 -w capture.pcap port 80 or port 443

    What This Does:

    • Captures HTTP/HTTPS traffic for forensic analysis.
    • Steps:
    1. Run the command on a critical server or edge device.
    2. Analyze the `.pcap` file in Wireshark for unusual connections (e.g., C2 traffic).
    3. Block malicious IPs using iptables -A INPUT -s 
       -j DROP</code>. </li>
</ol>

<h2 style="color: yellow;"> 3. Hunting for Persistence Mechanisms (MITRE T1547)</h2>

<h2 style="color: yellow;">Windows Registry Check:</h2>

[bash]
Get-ItemProperty -Path "HKLM:\Software\Microsoft\Windows\CurrentVersion\Run\"

      Linux Cron Job Check:

      crontab -l && ls -la /etc/cron./

      What This Does:

      • Identifies auto-start programs (malware persistence).
      • Steps:
      1. Review registry entries and cron jobs for unauthorized changes.
      2. Remove malicious entries using `Remove-ItemProperty` (Windows) or `crontab -r` (Linux).
        1. Cloud Log Analysis for Unauthorized API Calls (AWS CLI)

      AWS Command:

      aws cloudtrail lookup-events --lookup-attributes AttributeKey=EventName,AttributeValue=DescribeInstances

      What This Does:

      • Detects suspicious AWS API activity (e.g., reconnaissance).
      • Steps:
      1. Run the command in AWS CLI with appropriate IAM permissions.

      2. Investigate unexpected `DescribeInstances` calls (potential attacker scoping).

      3. Enable GuardDuty for automated threat detection.

      1. Mitigating Ransomware with File Integrity Monitoring (Linux)

      Linux Command:

      sudo aide --check

      What This Does:

      • Scans for unauthorized file modifications (ransomware, backdoors).
      • Steps:

      1. Install AIDE (`sudo apt install aide`).

      2. Initialize the database (`sudo aideinit`).

      3. Schedule regular checks (`crontab -e`).

      1. Exploiting vs. Patching Vulnerabilities (Metasploit & Patch Mgmt)

      Metasploit Exploit Check:

      msfconsole -x "use exploit/multi/handler; set payload windows/meterpreter/reverse_tcp; set LHOST [bash]; run"

      Patch Management (Windows):

      Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object HotFixID, InstalledOn

      What This Does:

      • Tests exploitability (red team) and verifies patches (blue team).
      • Steps:

      1. Use Metasploit to simulate attacks (ethical hacking).

      1. Verify missing patches and deploy updates via WSUS/SCCM.

      What Undercode Say:

      • Key Takeaway 1: SOC playbooks must integrate MITRE ATT&CK for standardized responses.
      • Key Takeaway 2: Automation (e.g., AIDE, AWS GuardDuty) reduces detection time.
      • Analysis: The rise in SOC tooling demands skilled analysts who can interpret alerts and execute playbooks efficiently. Plagiarism of cybersecurity resources (as noted by Izzmier) undermines trust—organizations should validate sources before adoption.

      Prediction:

      AI-driven SOC automation (e.g., SIEM+SOAR integrations) will dominate incident response by 2026, but human expertise remains critical for contextual decision-making.

      Reference:

      IT/Security Reporter URL:

      Reported By: Izzmier 64 - Hackers Feeds
      Extra Hub: Undercode MoN
      Basic Verification: Pass ✅

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