The English Rules for SOC Analysts

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A SOC (Security Operations Center) Analyst plays a critical role in defending an organization’s digital infrastructure. Mastering the rules and best practices is essential for success in this field. Below, we explore key concepts, practical commands, and techniques every SOC analyst should know.

You Should Know:

1. Essential Linux Commands for SOC Analysts

  • Log Analysis 
    grep "Failed password" /var/log/auth.log  Find failed SSH attempts
tail -f /var/log/syslog  Monitor logs in real-time
journalctl -u sshd --since "1 hour ago"  Check SSH service logs
  • Network Traffic Inspection 
    tcpdump -i eth0 port 80 -w http_traffic.pcap  Capture HTTP traffic
tshark -r http_traffic.pcap -Y "http.request"  Filter HTTP requests
netstat -tulnp  Check active connections and listening ports

2. Windows Security Commands

  • Event Log Analysis 
    Get-WinEvent -LogName Security -MaxEvents 10 | Where-Object {$_.ID -eq 4625}  Failed logins
wevtutil qe Security /q:"[System[(EventID=4688)]]"  Process creation events
  • Incident Response 
    tasklist /svc  List running processes and services
netstat -ano  Display active connections with PIDs
wmic process get name,processid,executablepath  Detailed process info

3. SIEM Querying (Splunk Example)

index=windows EventCode=4625 | stats count by src_ip  Count failed logins by IP
index=linux sourcetype=syslog "sudo" | table user, command  Sudo command audit

4. Threat Hunting with YARA

yara -r malware_rules.yar /suspicious_directory/  Scan for malware patterns

5. Automating SOC Tasks with Python

import os 
import subprocess

Monitor new files in a directory 
def monitor_dir(path): 
for file in os.listdir(path): 
if file.endswith('.exe'): 
print(f"Suspicious file detected: {file}")

monitor_dir('/downloads/')

What Undercode Say

A SOC analyst must blend theoretical knowledge with hands-on expertise. Regular log analysis, network monitoring, and familiarity with SIEM tools are non-negotiable. Automation (Python, Bash) enhances efficiency, while YARA and memory forensics help in malware investigations. Continuous learning is key—cyber threats evolve, and so must defenders.

Expected Output:

  • Linux Logs: Filtered SSH failures, real-time monitoring.
  • Windows Events: Extracted security logs, process tracking.
  • SIEM Queries: Aggregated attack patterns.
  • YARA Scans: Detected malicious files.
  • Python Scripts: Automated suspicious file alerts.

Prediction

As AI-driven attacks rise, SOC analysts will increasingly rely on machine learning for anomaly detection. Upskilling in AI-augmented security tools will be critical.

Reference:

The English Rules for SOC Analysts

References:

Reported By: Tylerewall I – Hackers Feeds
Extra Hub: Undercode MoN
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