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Known Threats Known threats are those that cybersecurity experts can identify using basic signature or pattern matching. Security systems armed with established signatures or patterns can efficiently detect and mitigate these known threats, providing a robust line of defense against commonly recognized attacks. Unknown Threats On the other end of the spectrum lie unknown threats. These threats present a significant challenge as they remain elusive to traditional detection mechanisms, making them harder to detect and neutralize promptly. Known Unknowns The realm of known unknownsThis classification involves malware that employs sophisticated obfuscation techniques, deliberately designed to circumvent signature-matching and evade detection. Despite being acknowledged as a potential threat, these entities lack established signatures or patterns for precise identification, thus posing a formidable challenge for security experts. Unknown Unknowns The unknown unknowns represent an even more daunting category in the threat landscape. This classification encompasses malware that introduces completely new attack vectors and exploits, leveraging innovative techniques and tactics. These threats are stealthy, possessing attack vectors and methods that remain completely unfamiliar and undetected by existing security measures, making them a potent menace. Unknown Knowns (Blind) An intriguing classification, the unknown knowns or "blind" threats, refers to threats that are known to security communities but remain unidentified or unrecognized within a specific system or organization. This blind spot poses a risk as the threat may exist, yet the system lacks the knowledge or detection capabilities to identify it. Akash Patel

During my pursuit of the CYSA (Cybersecurity Analyst) certification, I gained insights into the pivotal role played by the Security Intelligence Cycle. 1. Requirements (Planning & Direction) The initial phase sets the stage by defining the goals for intelligence gathering. It outlines what needs to be collected, the resources (time and money) to be allocated, and considers legal restrictions guiding the data collection process. 2. Collection (& Processing) This phase involves the implementation of software tools like SIEMs, which gather data and prepare it for later analysis. Protecting these tools is imperative; encryption and hashing techniques are deployed to safeguard sensitive information within SIEMs. 3. Analysis Armed with collected data, analysis commences against predefined use cases from the planning phase. Modern analysis techniques, including artificial intelligence and machine learning, help discern between good, bad, and unknown entities within the data. 4. Dissemination The dissemination phase refers to publishing information produced by analysis to consumers who need to act on the insights developed. Three levels—strategic, operational, and tactical—determine the relevance and urgency of the information. Strategic intelligence looks at long-term impacts, operational intelligence aids day-to-day decisions, and tactical intelligence guides real-time responses to alerts. 5. Feedback This phase is a reflective journey aiming to enhance the entire intelligence cycle. It seeks to refine requirements, improve data collection and analysis, and streamline information dissemination. Reviewing lessons learned, measuring success, and keeping pace with evolving threats drive continuous improvement. Factor for Value of intelligence Sources:- Timeliness, Relevancy, Accuracy Evaluation of source reliability ● Risk Management Identifies, evaluates, and prioritizes threats and vulnerabilities to reduce their negative impact ● Incident Response An organized approach to addressing and managing the aftermath of a security breach or cyberattack ● Vulnerability Management The practice of identifying, classifying, prioritizing, remediating, and mitigating software vulnerabilities ● Detection and Monitoring The practice of observing activity to identify anomalous patterns for further analysis Akash Patel

CIA triad is a foundational concept in both information security and cybersecurity.. Full Form of CIA: Confidential, Integrity, Availability.. CIA Triad ensure that information remains secure (confidential), accurate and unaltered (integrity), and accessible to authorized users (availability) throughout its lifecycle. Lets take an example to understand: Confidentiality: (Protect from unauthorized access) (Encryption) You use a strong password to prevent unauthorized access to your computer. Additionally, you encrypt sensitive documents to ensure that even if someone gains access to your files, they can't read them without the decryption key. Integrity: (Protect from unauthorized modification) (Hashing) To maintain the integrity of your documents, you regularly check their digital signatures. If someone tries to tamper with a document, the digital signature won't match, indicating that the file has been altered. Availability: (Always Accessible to Authorized Users) (Backup) You regularly back up your documents to an external hard drive or cloud storage. In case your computer fails or is compromised, you can access your documents from the backup, ensuring their availability. Akash Patel

I will try to explain in easiest way. Cyber Kill Chain and the MITRE ATT&CK® Framework, stand as fundamental models in this arena, each offering unique perspectives and insights into the world of cyber threats. Cyber Kill Chain: Origin and Purpose: Developed by Lockheed Martin, the Cyber Kill Chain offers a breakdown of a cyber attack, mapping out the stages from an attacker's viewpoint. Focus and Application: It aids security teams in understanding the flow of an attack, potentially allowing for proactive defense strategies at various stages. MITRE ATT&CK® Framework: Origin and Purpose: Created by MITRE Corporation, the tactics, techniques, and procedures (TTPs) used by adversaries during different stages of an attack. Tactics and Techniques: This framework delineates various behaviors and procedures followed by attackers across multiple stages of an attack. It assists defenders in understanding adversary behavior more comprehensively. Comparison: Cyber Kill Chain: Focuses on attack stages, aiding in understanding the attack lifecycle. MITRE ATT&CK® Framework: Provides an extensive library of real-world adversary behaviors and tactics employed within those stages Cyber Kill Chain: Understanding the Attacker's Game Plan Imagine you're playing a game where the bad guys are trying to break into your house. The Cyber Kill Chain is like a playbook that shows how these intruders plan their moves. It breaks down their strategy into steps: Step 1: (Reconnaissance): Attackers gather info about your house (or network) using Google Maps (or online tools) to find weak points. Step 2: (Weaponization): They gather tools like crowbars (or malware) to break in. Step 3: (Delivery): They send a package (or email) with something sneaky hidden inside. Step 4: (Exploitation): Using their tools, they break open your back door (or exploit system vulnerabilities). Step 5: (Installation): Once inside, they settle down and make sure they can come back later. Step 6: (Command and Control): They call their buddies (or set up secret communication channels) to coordinate their next moves. Step 7: (Actions on Objectives): Finally, they grab what they came for, like your TV (or your valuable data) MITRE ATT&CK® Framework: Understanding the Sneaky Tactics Now, think of the MITRE ATT&CK® Framework like a secret spy manual that explains all the sneaky tricks attackers might use while they're in your house: Trick 1: (Persistence): Attackers might hide spare keys outside ( ways to stick around in your network). Trick 2: (Evasion): They might use tricks to hide from your security cameras (avoid getting caught by antivirus). Trick 3: (Privilege Escalation): They could mess with your locks to gain more access inside your house (or get more control over your computer system). Akash Patel

To perform a basic analysis in Chainsaw, you can start with below commands: To do (Search) analysis of log using words: Using the command chainsaw.exe search mimikatz -i {Logs Path}, performing a case-insensitive search for the term "mimikatz" within the logs. Command :- chainsaw.exe search mimikatz -i {Logs Path} To do (Search) analysis of log using Event IDs: Using chainsaw.exe search -t "Event.System.EventID: =4104" {Log Path} to search for logs matching Event ID 4104. Command:- chainsaw.exe search -t "Event.System.EventID: =4104" {Log Path} To do (Hunting)analysis of log using inbuild rules: Leveraging inbuilt rules via chainsaw.exe hunt -r rules/ {Log Path}, utilizing the "hunt" keyword and applying rules located in the "rules/" directory. Command:- chainsaw.exe hunt -r rules/ {Log Path} To do(Hunting) analysis of log using Sigma rules: Using Sigma rules with chainsaw.exe hunt -s sigma/ --mapping mappings/sigma-event-logs-all.yml, specifying Sigma rules located in the "sigma/" directory and mapping via "--mapping" with a file that instructs Chainsaw how to interpret third-party rules. Command:- chainsaw.exe hunt -s sigma/ --mapping mappings/sigma-event-logs-all.yml These commands cover a range of log analysis scenarios, enabling users to perform targeted searches and utilize different rule sets within Chainsaw for comprehensive log analysis tasks. Akash Patel

In today's cybersecurity landscape, log analysis stands as a critical pillar in identifying potential threats and fortifying defenses. Among the array of log analysis tools, one tool, in particular, has revolutionized my approach to log scrutiny: Chainsaw. Having employed this tool for over two years, it has proven to be an indispensable asset within my toolkit. The Efficacy of Chainsaw: Chainsaw offers unparalleled agility and effectiveness, quickly surfacing potential threats in logs, providing instant alerts that are vital for any proactive security approach. What sets Chainsaw apart is its seamless integration of Sigma detection rules and custom Chainsaw detection rules. Distinctive Features I Highly Value: 1. Hunt with Sigma Rules: Leveraging Sigma detection rules unlocks deeper investigative capabilities, facilitating threat hunting, CVE-based rule analysis, network scrutiny, and numerous other exhaustive search patterns. 2. Lightweight Execution and Diverse Output Formats: Chainsaw ensures clean and lightweight execution, avoiding unnecessary bloat, and offers diverse output formats like ASCII table, CSV, and JSON, catering to various analysis preferences. 3. Cross-Platform Compatibility: The tool's versatility extends across multiple operating systems, making it accessible and operational on MacOS, Linux, and Windows environments. Chainsaw's Functionality and Usage: 1. Built-In rules: Chainsaw's built-in rules provides an initial analysis overview, covering various events such as PowerShell executions, RDP attacks, account tampering, antivirus detections, and more based upon logs. 2. Sigma Rules' Extensive Capabilities: Sigma rules' flexibility empowers deep dive investigations in logs, offering a wide spectrum of analysis, including threat hunting in logs, emerging threat detection through logs, and network rule scrutiny based upon logs. A Forewarning for Effective Log Retention: While Chainsaw stands as a dream tool for log analysts, it's crucial to highlight that its efficiency relies on the availability of logs. Saving logs on separate servers or locations, distinct from the endpoints, is imperative to prevent data loss in case of attacker interference. In the realm of log analysis, Chainsaw emerges as a game-changer, but its effectiveness hinges on the proactive retention and safeguarding of log data (I will provide basic rules how to run this tool in next post keep eye on post) Akash Patel

Introduction: I will start with Intro, FireEye Redline is a free endpoint security tool for detecting and investigating security incidents on Windows system. In my experience with FireEye Redline, there may be additional features, But I will highlight few functionalities which i worked with: 1. Endpoint Detection and Response (EDR): Redline helps security professionals analyze and investigate security incidents on individual endpoints. 2. Memory Analysis: Redline allows for the analysis of volatile memory to identify suspicious or malicious activities that might not be evident through traditional file-based analysis. 3. Indicator of Compromise (IoC) Detection: The tool can identify indicators of compromise on a system, helping security teams understand and respond to potential threats. Data Capture and Analysis: Data capture capabilities of Redline, including memory, disk, system, and network information. 1. Memory Analysis: Enumerate features like process listing, driver enumeration, hook detection as well as acquire memory image. 2. Disk Analysis: Gather File enumeration included deleted files from recycle bin, active files, NTFS INDX Buffers included directories and more... as well as disk enumeration. 3. System Analysis: Cover system information, user accounts, restore points, OS details, prefetch files, registry hive, event logs, etc. 4. Network Analysis: ARP tables, routing tables, ports, DNS tables, and browser history. As well as Services, Scheduled tasks, Common persistence mechanisms Very Easy Execution: --Install the tool. --Select/create a comprehensive collector. --Edit the script to choose specific details. (Windows, Linux, OS X) -- Choose the preferred location (e.g., a pendrive). After this you have script ready for you to collect evidence. --Insert the pendrive. --Run the file from the pendrive. --Collect the data effortlessly. You can use this tool for IOC scanning. For this another tool is needed which is OpenIOC 1.0 and use AlienVault website for IOCs. -- Obtain IOCs from AlienVault -- Make necessary edits using OpenIOC 1.0 and there you go run scan using Redline and if Redline identifies any of the IOCs on the endpoint, it will collect that information. In My Point of view, FireEye's Redline one of the best tools you can have in your cybersecurity inventory. Its capabilities, ease of use, make it an indispensable asset for anyone. The ability to capture a, ensures that no stone is left unturned in the pursuit of identifying and mitigating potential security threats. But there are other tools which are far more better but this tool definitely is best asset in inventory Akash Patel

Well another tool in my inventory that has garnered my attention is Cyber Triage. If i start with overview Cyber Triage provide cybersecurity professionals with quick and comprehensive answers to intrusion-related queries. Developed by Brian Carrier, renowned for his work on filesystem forensic analysis, Autopsy, and The Sleuth Kit (TSK). What I Like About Cyber Triage: --The tool provides a user-friendly interface with straightforward options. --It covers a wide range of artifacts, including processes, network activity, user logins, and more, simplifying the investigation process. --Ability to create timelines, identify network connections. --Ability to flag Bad/suspicious items with recommendations, allowing the analyst to focus on potential threats and investigate further. Functionality of this tool which I used a lot: --Disk Image Analysis Cyber Triage excels in images. It conducts a thorough scan, collecting volatile data, encompassing running processes, open ports, logged-in users, network connections, DNS cache, and more. Notably, it identifies suspicious items, streamlining the investigative process. --Memory Image Analysis In the memory analysis, Cyber Triage shines by utilizing the powerful Volatility framework (Which is the best framework till now in term of memory analysis according to me for example tool volatility 3). It provides intricate details about running processes, user accounts, execution history, and network connections from memory artifacts. The tool adeptly flags suspicious items, aiding in the identification of potential threats Lets talk about Usage: --Cyber Triage offers two main modes: live (automatic or manual) and file analysis (disk or memory images). --It can be deployed on endpoints through a collection tool, manually run from removable media, or process disk and memory images.. --Users can perform quick and effective incident response by leveraging the automated analysis process. My Point of view: Cyber Triage is valuable tool for automated incident response and forensic analysis. I used this tool a lot because of multiple reasons like ease of use and comprehensive analysis. and this tool is a beneficial addition to my cybersecurity toolkit. Wanna check out (Link given) :- https://www.cybertriage.com/ Akash Patel

One tool stands out remarkably from my inventory list is : OS Forensics by PassMark. OS Forensics is a comprehensive, non-free digital forensics tool that has established itself as a game-changer in the field. Its versatility and profound capabilities make it a dream come true for professionals delving into forensic investigations. The tool's prominence extends to law enforcement agencies, signifying its reliability and credibility in critical investigations. Comprehensive Capabilities: Memory Analysis: Utilizing the Volatility framework, it provides memory analysis with precision and efficiency. Disk Imaging: Seamlessly create images of entire disks or endpoints, crucial for preserving evidence. Artifact Collection: Gather system artifacts, hash files, and identify file hashes effortlessly. File Search and Indexing: OSForensics allows for rapid searching of files, including deleted files, within a computer system. It creates an index of file metadata for quick and efficient searches. File Analysis: OSForensics allows deep analysis of files, including metadata examination, hex viewer, and hash identification, providing detailed information about file attributes and contents. Registry Analysis: It enables investigators to analyze Windows registries, extracting information about user activities, installed programs, and system configurations. Password Recovery: The tool includes features to recover passwords from various applications, aiding in accessing encrypted or password-protected files. Internet History Examination: It helps in analyzing internet browsing history, cookies, cache, and download history to trace online activities. Ease of Use: 1. User-Friendly Interface: Despite its powerful capabilities, OS Forensics maintains a user-friendly interface, allowing for easy navigation and operation. 2. One-Click Functionality: The tool's standout feature lies in its ability to perform multiple tasks with a single click, streamlining processes and saving time. The Magic of Report Generation: Exceptional Reporting: Perhaps the pinnacle of OS Forensics is its report generation feature. The tool's ability to create detailed, comprehensive reports is simply awe-inspiring. All-In-One Solution Imagine having every essential function required for forensic analysis at your disposal within a single platform. OS Forensics Tools offer precisely that. From file analysis to memory examination, registry inspection to timeline creation, the tools encompass a wide array of functionalities, eliminating the need for investigators to navigate between multiple applications. Conclusion: OS Forensics by PassMark isn't just another tool in the realm of digital forensics; it's a catalyst for efficiency, accuracy, and reliability in investigations. Its capabilities to analyze memory, create disk images, collect artifacts, and generate detailed reports are invaluable assets for any forensic professional. Link:- https://www.osforensics.com/ Akash Patel

-- Promote use of strong, unique passwords and MFA to protect accounts -- Emphasize the importance of keeping system and software up to date to address vulnerabilities -- Prioritize ongoing security awareness training to educate employees about recognizing and responding to threats like phishing. -- Limit data access to authorized individuals and classify sensitive data for appropriate security measures. -- Stress the need of monitoring and periodic internal and external security audits to detect and address weakness. -- Regular data backups for effective mitigations and recovery in the event of security breach.

"I have identified a series of strategic actions that can be effectively employed across diverse incident scenarios after attack or while investigating attack." Auditing all AD accounts, especially any Administrative or Domain admin accounts, check for new additions, remove any unrecognized accounts or stale accounts. (Specifically check things like scanning accounts or any other service accounts https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns) Checking for startup items, registries, scheduled tasks or WMI objects that may be added to achieve persistence. Checking for the path "‎\Device\HarddiskVolume*\Windows\System32\" and delete anything suspicious. Reseting the account for all the AD users and also reset the Kerberos account - Krbtgt Make sure to reset it twice. https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/ad-forest-recovery-resetting-the-krbtgt-password Auditing all firewalls and ensure there are no rules allowing RDP (3389 default) or Remote Access externally facing from the internet. Checking firewalls as well for non-standard remote access ports being allowed and ensure these are disabled from being internet facing if at all possible. Auditing accounts with administrative permissions, and ensure they are limited based on least privilege needed to perform required functionality. Requesting clients to the autoruns tool from Microsoft and verify there is nothing suspicious in the startup items, scheduled tasks, or WMI objects: https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns Verifying integrity of OS files using command "sfc /scannow" Akash Patel

A topic that frequently surfaces is the comparison between Endpoint Detection and Response (EDR) and Security Information and Event Management (SIEM) solutions. While people mostly say that SIEM is better than EDR. For me, the two serve different, yet complementary, functions within the security landscape. EDR: EDR solutions are the guardians of endpoints. The most important benefits I can think of are: Threat Detection: As it uses AI and behaviour and multiple engines. It becomes very effective to detect threats and malicious activities on endpoints. Incident Response: Very best benefit, EDR provide enabling quick actions to contain and mitigate security incidents. (for example Sentinel One is its ability to capture snapshots at regular intervals, such as every four hours, as a proactive measure against threats like ransomware. These snapshots serve as crucial checkpoints in the event of a security incident, allowing for a potential rollback action to restore the endpoint to a previous, uncompromised state) On other hand SIEM: SIEM, on the other hand, acts as the central intelligence hub for network-wide security. It collects and analyzes data from diverse sources, including network devices, applications, and systems. The most important benefits I can think of are: Centralized Data Analysis It correlates data from multiple sources, helping organizations understand the full context of the threat. Now for me where Defense-in-Depth Approach comes into place: In truth, EDR and SIEM are not adversaries; they play complementary roles in your cybersecurity strategy. EDR acts as the frontline protector of endpoints, ensuring real-time monitoring and incident response. SIEM serves as the network-wide guardian, offering comprehensive incident management, compliance adherence, and historical data analysis. In Conclusion: (I have seen multiple hiring Companies neglect experience in EDR, I still don't understand why) For me EDR plays an indispensable role in cybersecurity. Neglecting EDR in favor of SIEM can leave an organization vulnerable to endpoint-focused threats.