Effective Threat Investigation For Soc Analysts Pdf [best] Jun 2026
Do not isolate your investigation to a single endpoint if the logs show network connections to other local IP addresses. 6. Incident Documentation and Reporting
: Leveraging platforms like VirusTotal, IBM X-Force Exchange, and AbuseIPDB helps enrich alerts with context regarding known malicious IPs, domains, and file hashes. The Standard Investigation Workflow
Understanding the complete journey of a security alert — from ingestion through triage, investigation, and resolution — is essential for any SOC analyst. This lifecycle includes: effective threat investigation for soc analysts pdf
Process executions (Event ID 4688), PowerShell logs, and registry changes.
Analysts gather essential logs from endpoints, firewalls, proxies, and email security solutions. This stage involves parsing diverse formats and normalizing data for cross-source correlation. Do not isolate your investigation to a single
: Analyze parent-child process relationships via EDR. For example, winword.exe spawning powershell.exe or cmd.exe is highly anomalous and indicates a macro-based execution chain.
Identify what techniques were used (e.g., T1059.001 - PowerShell). Anticipate the next moves of the attacker. C. Threat Intelligence Integration This stage involves parsing diverse formats and normalizing
A standard investigation follows a meticulous lifecycle to ensure no threat is overlooked:
The endpoint usually holds the most definitive proof of malicious activity. Analysts should hunt for specific persistent mechanics:
CTI enriches internal alert data with external global context.
[ SIEM / XDR ] ---> Aggregates logs and triggers alerts | +---> [ EDR ] ---> Analyzes endpoint processes, memory, and file changes | +---> [ NDR ] ---> Examines network packets, flows, and protocol anomalies | +---> [ Threat Intel ] ---> Enriches data with known adversary behavior SIEM and XDR Platforms
