Introduction to Proactive Threat Hunting

Moving from Reactive to Proactive

Traditional SOC environments rely on alerts generated by SIEMs or EDRs. Threat hunting assumes that advanced adversaries have already bypassed these automated defenses and are actively dwelling in your network.

Threat hunting is hypothesis-driven. You start with an assumption (e.g., “Attackers are persisting via Scheduled Tasks”) and hunt for evidence to prove or disprove it.

The Threat Hunting Loop

1. Hypothesis Creation: Formulate a targeted hypothesis based on threat intelligence or a new CVE.
2. Investigation: Query your SIEM, EDR, or network logs for anomalies.
3. Uncover New TTPs: Identify malicious activity that evaded standard detections.
4. Analytics Development: Create new automated rules so you don’t have to hunt for this manually again.

Data Source	High Value for Hunting
Endpoints	Process executions, PowerShell logs, Registry modifications
Network	DNS queries, unexpected outbound connections, unusual protocols
Identity	Uncharacteristic logon times, lateral movement (Pass-the-Hash)

Read more about Cyber Threat Hunting on Wikipedia.