312-85 Exam Dumps : Certified Threat Intelligence Analyst (CTIA)

Passive DNS monitoring involves collecting data about DNS queries and responses without actively querying DNS servers, thereby not altering or interfering with DNS traffic. This technique allows analysts to track changes in DNS records and observe patterns that may indicate malicious activity. In the scenario described, Enrique is employing passive DNS monitoring by using a recursive DNS server to log the responses received from name servers, storing these logs in a central database for analysis. This approach is effective for identifying malicious domains, mapping malware campaigns, and understanding threat actors' infrastructure without alerting them to the fact that they are being monitored. This method is distinct from active techniques such as DNS interrogation or zone transfers, which involve sending queries to DNS servers, and dynamic DNS, which refers to the automatic updating of DNS records.References:

• SANS Institute InfoSec Reading Room, "Using Passive DNS to Enhance Cyber Threat Intelligence"
• "Passive DNS Replication," by Florian Weimer, FIRST Conference Presentation

During the threat modeling process, Mr. Andrews is in the stage of threat profiling and attribution, where he is collecting important information about the threat actor and characterizing the analytic behavior of the adversary. This stage involves understanding the technological details, goals, motives, and potential capabilities of the adversaries, which is essential for building effective countermeasures. Threat profiling and attribution help in creating a detailed picture of the adversary, contributing to a more focused and effective defense strategy.References:

• "The Art of Threat Profiling," by John Pirc, SANS Institute Reading Room
• "Threat Modeling: Designing for Security," by Adam Shostack

Tactical threat intelligence analysis focuses on the immediate, technical indicators of threats, such as the tactics, techniques, and procedures (TTPs) used by adversaries, their communication channels, the tools and software they utilize, and their strategies for evading forensic analysis. This type of analysis is crucial for operational defenses and is used by security teams to adjust their defenses against current threats. Since John successfully extracted information related to the adversaries' modus operandi, tools, communication channels, and evasion strategies, he is performing tactical threat intelligence analysis. This differs from strategic and operational threat intelligence, which focus on broader trends and specific operations, respectively, and from technical threat intelligence, which deals with technical indicators like malware signatures and IPs.References:

• "Tactical Cyber Intelligence," by Cyber Threat Intelligence Network, Inc.
• "Intelligence-Driven Incident Response: Outwitting the Adversary," by Scott J. Roberts and Rebekah Brown