Which phase of the threat hunting process involves comparing established indicators of compromise against network behaviors?

The threat hunting process is a proactive, iterative cycle. After a hypothesis is generated and data is analyzed to find anomalies or suspicious patterns, the next critical phase is to validate these findings. The threat confirmation phase involves taking the suspicious behaviors uncovered during analysis and comparing them against established threat intelligence, such as known Indicators of Compromise (IoCs), malware signatures, or Tactics, Techniques, and Procedures (TTPs). This cross-referencing confirms whether the observed activity is genuinely malicious, thereby validating the initial hypothesis and justifying a security response.

A. Data analysis: This is the broader phase of sifting through collected data to identify anomalies and patterns of interest, which occurs before a specific threat is confirmed.
C. Objective and scope: This is a preliminary planning phase that defines the goals and boundaries of the hunt before any investigation or analysis begins.
D. Hypothesis generation: This is the initial phase where a testable theory about a potential threat is formulated, which then guides the subsequent data analysis and investigation.

1. Cisco White Paper, "Threat Hunting for the Modern-Day Enterprise" (2018): This document outlines the threat hunting loop, which includes an "Investigate" phase. This phase is described as the process where hunters "search for evidence of the TTPs and IoCs related to the hypothesis." The act of matching network behavior against these established IoCs is the method of confirming the threat's presence. (Reference: Section "The hunting loop," page 4).

2. Al-Taei, S. M. H. R. U. K., & Al-Kahtani, K. M. (2020). "A Framework for Cyber Threat Hunting." 2020 3rd International Conference on Computer Applications & Information Security (ICCAIS), 1-6. This academic paper presents a structured threat hunting framework. It explicitly defines a "Validation" stage following detection, stating its purpose is to "confirm the detected suspicious activities by using the collected information from the threat intelligence." This directly aligns with the concept of threat confirmation. (Reference: Section III. Proposed Framework, Stage 4: Validation, p. 4). DOI: https://doi.org/10.1109/ICCAIS48893.2020.9096801

3. Niles, K., & Hart, S. (2018). Incident Response & Computer Forensics, Third Edition. McGraw-Hill Education. While a broader text, its principles are foundational. The book describes the incident validation/verification process, which involves "correlating the available data" with known indicators to "confirm whether an incident has occurred." This process is synonymous with the threat confirmation phase in hunting. (Reference: Chapter 3, "Handling Computer Security Incidents," Section "Detection and Analysis").