Effective Threat Investigation For Soc Analysts Pdf |work| Access

With evidence collected, determine whether the activity is malicious, benign, or requires further investigation. Key considerations include:

Move from broad data collection to narrow, specific evidence. : Receive the alert from SIEM, EDR, or NDR tools.

: Specific file paths, hashes, IP addresses, and command-line arguments discovered.

: Gather contextual data about the affected user and asset. Analyze : Correlate artifacts to build a timeline of events. effective threat investigation for soc analysts pdf

: Validating the initial alert to rule out false positives.

[Phase 1: Alert Triage] ---> [Phase 2: Data Gathering] ---> [Phase 3: Scoping & Analysis] ---> [Phase 4: Containment] Phase 1: Initial Alert Triage

Effective investigation begins with the right mindset. You cannot treat every alert with equal priority. Speed vs. Accuracy With evidence collected, determine whether the activity is

Collecting artifacts around the alert, such as user behavior, asset criticality, and historical data.

Look for consistent, mathematical time intervals in outbound connections to external IPs, which often indicate automated C2 polling.

Monitor ID 4624 (Successful Logon), ID 4625 (Failed Logon), and ID 7045 (New Service Created). : Specific file paths, hashes, IP addresses, and

Evidence collection turns suspicion into fact. This involves:

Inspecting network packets and identifying anomalous protocols. 5. Common Pitfalls to Avoid

LSASS memory dumping, brute-forcing, or credential cracking.

Analysts must know where to look and what tools to leverage to piece together an attack timeline. Log Source / Tool Category Primary Investigative Value Key Event IDs / Artifacts to Watch Process execution tree, memory dumps, file integrity.

Clearly list all IP addresses, domains, and file hashes found.