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This resource is designed to sharpen your analytical skills in cybersecurity, whether you’re an entry-level analyst or looking to enhance your threat detection and investigation capabilities. The training includes hands-on scenarios involving logs, SIEM alerts, MITRE ATT&CK mappings, and critical thinking exercises.
Get the Book:
You Should Know:
1. Analyzing SIEM Alerts with Linux Commands
- Use `grep` to filter logs:
grep "Failed password" /var/log/auth.log Check SSH brute-force attempts
- Extract suspicious IPs:
awk '/Failed password/{print $11}' /var/log/auth.log | sort | uniq -c | sort -nr
2. MITRE ATT&CK Simulation Commands
- Check for unusual process execution (T1059):
ps aux | grep -E "(sh|bash|python|perl|wget|curl)"
- Detect lateral movement (T1021):
netstat -tulnp | grep ESTABLISHED
3. Windows Threat Hunting
- Check for suspicious scheduled tasks:
Get-ScheduledTask | Where-Object { $_.TaskPath -notlike "\Microsoft" } - Investigate unusual service creation:
Get-WmiObject -Class Win32_Service | Where-Object { $_.StartName -notlike "LocalSystem" }
4. Log Analysis with AWK & Sed
- Extract HTTP 404 errors from Apache logs:
awk '$9 == 404 {print $7}' /var/log/apache2/access.log | sort | uniq -c - Filter suspicious User-Agents:
sed -n '/curl|wget|nikto|sqlmap/p' /var/log/apache2/access.log
5. Network Forensics with Tcpdump
- Capture DNS exfiltration attempts:
tcpdump -i eth0 'port 53 and udp and (udp[bash] & 0x80 = 0)' -w dns_exfil.pcap
- Detect beaconing activity:
tcpdump -nn -r traffic.pcap 'tcp[bash] == tcp-syn and not src net 192.168.1.0/24'
What Undercode Say:
Cybersecurity analysts must master log analysis, SIEM operations, and threat-hunting techniques. The provided commands help detect real-world attack patterns, from brute-force attempts to lateral movement. Always verify logs, automate detection rules, and stay updated with MITRE ATT&CK tactics.
Expected Output:
- Suspicious IPs from auth logs.
- Unusual processes or services.
- Malicious network traffic patterns.
- Anomalous scheduled tasks or executions.
References:
Reported By: Izzmier Scenario – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
