The Rise of the Threat Hunter - Part 4

This is the fourth post in my ongoing "The Rise of the Threat Hunter" blog series. For more information about the series, please check out this intro or read my previous post, "Three Essential Aspects of Being a Threat Hunter" by our experienced threat hunter and former Global Threat Intelligence Lead, available here.

Daily Briefing and Prioritization

Each day starts with a critical team briefing to discuss the latest threat intelligence and ongoing investigations. This helps in determining priorities and aligning the team towards urgent targets. These briefings typically involve reviewing recent anomalies/incidents, analyzing new threat reports, and updating each other on the status of various cases. It's a collaborative time for the team to develop strategies on how to deal with the most urgent threats. Following the briefing, threat hunters go back to their inboxes to review emails and alerts from various security tools. These alerts can range from routine notifications such as system performance checks to urgent warnings indicating potential security incidents. The ability to quickly prioritize these alerts and determine which ones require immediate action, and which can be monitored or disregarded, is crucial for effectively managing the day's workload.

Threat Detection and Context Switching

Threat hunters use advanced tools to immerse themselves in logs and network traffic, looking for signs of malicious activity. This phase requires a high level of focus and the ability to quickly switch contexts. One moment they might be analyzing unusual user behavior indicative of a potential identity theft attempt, and the next moment they could be investigating anomalies pointing to a possible malware outbreak. Each threat type requires a different approach and set of skills, making context switching an important challenge. The ability to quickly shift focus from one task to another without losing focus is vital. Threat hunters must be adept at using a variety of tools and techniques ranging from signature-based detection methods to advanced behavioral analyses. This constant state of readiness and flexibility makes threat detection both challenging and exciting.

Deep Research and Analysis

The core of a threat hunter's day involves deep research. They might reverse engineer a piece of malware, analyze its behavior, and trace its origin. This technical challenge must be combined with the need to stay updated on the latest attack vectors and cybercrime techniques. Cyber threats are constantly evolving, and threat hunters must continuously learn and adapt to stay ahead. Deep research often requires a multidisciplinary approach that combines programming knowledge, network protocols, and even psychology to understand the attacker's motives and methods. This is not just about finding out what happened, but also why it happened and how it can be prevented in the future. This detailed investigation can provide valuable insights that contribute to a broader understanding of an organization's overall security strategy.

Balancing Priorities

As multiple investigations are ongoing, threat hunters must balance their priorities and decide which threats to address first. This decision-making process is crucial because addressing the most critical threats immediately can prevent significant damage. However, it also requires a clear understanding of each threat's potential impact and urgency, adding another layer of complexity to their already demanding roles. This balancing act involves collaboration with other teams to continuously reassess the threat landscape and effectively allocate resources. It's a dynamic environment where priorities can shift rapidly based on new information or emerging threats, requiring both strategic and flexible approaches from threat hunters.

Communication and Collaboration

Effective communication is essential. Threat hunters must be able to express their findings to various stakeholders, many of whom are not technically oriented. Translating complex technical details into understandable and actionable insights is no small feat. Poor communication can lead to misunderstandings and inadequate responses, making it a critical aspect of their role. Coordination with other teams such as IT, compliance, and management is also important. Ensuring smooth communication and collaboration between these groups guarantees a unified response against threats. This often involves writing detailed reports, presenting findings in meetings, and providing clear recommendations to mitigate identified risks. The ability to communicate effectively can be the difference between a quick resolution and a prolonged security incident.

Documentation

As investigations progress, threat hunters meticulously document their findings, methods, and results. Accurate documentation is essential for creating a knowledge base that can assist future investigations. This process ensures valuable insights are not lost and allows an organization to continuously improve its threat detection and response capabilities. Documentation serves multiple purposes: it provides a record of what was discovered and how it was handled, helps in training new team members, and supports compliance requirements. Comprehensive documentation can also be a powerful tool for retrospective analysis, helping to improve and refine security strategies over time. By maintaining detailed records, threat hunters contribute to a growing knowledge base that strengthens an organization's overall security posture.

A Sample Day

Although every threat hunter and company is different, a typical day might look something like this:

• Morning briefing: Review anomaly findings and incident reports to determine priorities for the day.
• Email and alert review: Scrutinize alerts to identify threats requiring immediate action.
• First threat detection: Use security tools to analyze events, review logs, and monitor network traffic for anomalies.
• In-depth investigations: Conduct in-depth analysis of defined threats using OSINT, correlate data, gather evidence, reverse engineer malware, etc.
• Collaboration meetings: Share findings with customer, IT, compliance, and management teams.
• Ongoing monitoring: Balance ongoing investigations while continuously monitoring systems for new threats.
• Documentation: Record all findings and methodologies for future reference and knowledge sharing.

Despite the continuous challenges such as the technical complexity of evolving threats, the need for quick context switching, or critical communication and coordination with other teams, being a threat hunter is incredibly rewarding. There's a unique satisfaction in uncovering complex attacks or preventing an incident before it causes harm. The role requires a mix of technical expertise, problem-solving skills, and effective communication, making each day dynamic and purposeful.

A threat hunter's life is far from ordinary. It's a dynamic, high-risk environment that requires constant vigilance and adaptability. However, for those who are fully committed to the cause, the rewards outweigh the challenges. Protecting organizations from cyber threats and making a real difference in the world of cybersecurity is a daily victory in the ever-evolving landscape of cyber defense.

Learn More About OpenText Cyber Security

Ready to empower your threat hunter team with products, services, and training that protect your most valuable and sensitive information? For proactive identification, prioritization, and investigation of anomalies and malicious behavior, look into our comprehensive security solution portfolio that offers 360-degree visibility across endpoints and network traffic for threat hunters and security analysts. Explore our cyber security portfolio.

Source: Threat Hunters - A Day in the Life - OpenText Blogs