Hybrid Analysis Technique to detect Advanced Persistent Threats

Recent technological innovations and new age computing models in IT infrastructure have provided faster bandwidth speeds, cloud computing, mobile computing and virtualization have virtually melted the boundaries between traditional on premise and internet based enterprise security perimeter. This has created a data-rich digital era, which is in fact an excellent opportunity for hackers and threat vectors leading to cybercrime. In fact, cybercrime has been progressing at the highest pace in last few years. Advanced Persistent Threat or APT is a highly sophisticated threat. Initially, such attacks focused and targeted government, state, or financial institutions only. However, recent breach reports and studies have started to indicate the trend of APT involving wider domains. This chapter takes a critical look at the impact and incidents due to advanced persistent threats and the advanced evasion techniques for packing, encryption, and behavior obfuscation during APT attacks to hide their malicious behavior and evade detection.KeywordsAPTAdvanced persistent threatsCyberattacksCyber threatsCybercrime

This talk will cover two topics, namely, modeling and design of Moving Target Defense (MTD), and DIFT games for modeling Advanced Persistent Threats (APTs). We will first present a game-theoretic approach to characterizing the trade-off between resource efficiency and defense effectiveness in decoy- and randomization-based MTD. We will then address the game formulation for APTs. APTs are mounted by intelligent and resourceful adversaries who gain access to a targeted system and gather information over an extended period of time. APTs consist of multiple stages, including initial system compromise, privilege escalation, and data exfiltration, each of which involves strategic interaction between the APT and the targeted system. While this interaction can be viewed as a game, the stealthiness, adaptiveness, and unpredictability of APTs imply that the information structure of the game and the strategies of the APT are not readily available. Our approach to modeling APTs is based on the insight that the persistent nature of APTs creates information flows in the system that can be monitored. One monitoring mechanism is Dynamic Information Flow Tracking (DIFT), which taints and tracks malicious information flows through a system and inspects the flows at designated traps. Since tainting all flows in the system will incur significant memory and storage overhead, efficient tagging policies are needed to maximize the probability of detecting the APT while minimizing resource costs. In this work, we develop a multi-stage stochastic game framework for modeling the interaction between an APT and a DIFT, as well as designing an efficient DIFT-based defense. Our model is grounded on APT data gathered using the Refinable Attack Investigation (RAIN) flow-tracking framework. We present the current state of our formulation, insights that it provides on designing effective defenses against APTs, and directions for future work.

This paper analyzes the process of Google Aurora attack, summarizes the typical steps of APT attacks. By analyzing the defects on traditional enterprise security architecture, this paper proposes a new security solution with a central analysis and control module. The module adopts a detection mode based on the storage, and it is divided into storage layer, analysis layer and presentation layer.

The attack and defense model of network security based on game theory has developed into an effective network security model. It is a hot topic in the field of network and information security to use the idea of game theory to attack and defend the network security. This paper analyzes the general model of game theory in the field of security. This paper also analyzes the general model of network security attack and defense game. This paper also analyzes the game theory model of cryptographic protocol. This paper studies the existing network security methods based on game theory, reviews the development and evolution process and technical core of network security based on game theory, and compares the specificity of network security models based on game theory. Finally, the paper discusses the problems in the field of network security based on game theory, and tries to forecast its future development trend.

The swift advancement of network technologies has created an unprecedented level of connectivity and efficiency in digital systems. This expansion has also led to the rise of advanced network security threats, undermining traditional defensive strategies. This research study examines the dynamics of new network security risks, assessing their core causes, impacts, and the technology improvements necessary for effective countermeasures. This study examines critical concerns including ransomware, advanced persistent threats (APTs), IoT vulnerabilities, and AI-driven cyberattacks, with the objective of offering practical insights and strategic frameworks for enterprises to anticipate the next decade of cyber threats. Furthermore, empirical case studies and examples demonstrate the urgent nature of these concerns, while suggested remedies highlight possibilities for resilience and innovation. Keywords- Network Security, Advanced Persistent Threats, Ransomware, IoT Vulnerabilities, Cybersecurity Strategies, Artificial Intelligence, Cyber Threat Mitigation, Quantum Cryptography

The swift advancement of network technologies has created an unprecedented level of connectivity and efficiency in digital systems. This expansion has also led to the rise of advanced network security threats, undermining traditional defensive strategies. This research study examines the dynamics of new network security risks, assessing their core causes, impacts, and the technology improvements necessary for effective countermeasures. This study examines critical concerns including ransomware, advanced persistent threats (APTs), IoT vulnerabilities, and AI-driven cyberattacks, with the objective of offering practical insights and strategic frameworks for enterprises to anticipate the next decade of cyber threats. Furthermore, empirical case studies and examples demonstrate the urgent nature of these concerns, while suggested remedies highlight possibilities for resilience and innovation. Keywords- Network Security, Advanced Persistent Threats, Ransomware, IoT Vulnerabilities, Cybersecurity Strategies, Artificial Intelligence, Cyber Threat Mitigation, Quantum Cryptography

Malware attacks are growing years after years because of increasing android, IOT along with traditional computing devices. To protect all these devices malware analysis is necessary so that interest of the organizations and individuals can be protected. There are different approaches of malware analysis like static, dynamic and heuristic. As the technology is advancing malware authors also use the advanced malware attacking techniques like obfuscation and packing techniques, which cannot be detect by signature based on static approaches. To overcome all these problems behavior of malware must be analyzed using dynamic approaches. Now a days malware author using some more advanced evasion techniques in which malware suspends its malicious behavior after detecting virtual environment. So, evasion techniques give a new challenge to malware analysis because even dynamic approach some time fails to detect and analyze the malwares.

In recent years, advanced persistent threat (APT) attacks have become a significant network security threat due to their concealment and persistence. Correlation analysis of APT groups is vital for understanding the global network security landscape and accurately attributing threats. Current studies on threat attribution rely on experts or advanced technology to identify evidence linking attack incidents to known APT groups. However, there is a lack of research focused on automatically discovering potential correlations between APT groups. This paper proposes a method using attack behavior patterns and rough set theory to quantify APT group relevance. It extracts two types of features from threat intelligence: APT attack objects and behavior features. To address the issues of inconsistency and limitations in threat intelligence, this method uses rough set theory to model APT group behavior and designs a link prediction method to infer correlations among APT groups. Experimental results on publicly available APT analysis reports show a correlation precision of 90.90%. The similarity coefficient accurately reflects the correlation strength, validating the method’s efficacy and accuracy.

Detection of advanced persistent threat using machine-learning correlation analysis

Malware analysis forms a critical component of cyber defense mechanism. In the last decade, lot of research has been done, using machine learning methods on both static as well as dynamic analysis. Since the aim and objective of malware developers have changed from just for fame to political espionage or financial gain, the malware is also getting evolved in its form, and infection methods. One of the latest form of malware is known as targeted malware, on which not much research has happened. Targeted malware, which is a superset of Advanced Persistent Threat (APT), is growing in its volume and complexity in recent years. Targeted Cyber attack (through targeted malware) plays an increasingly malicious role in disrupting the online social and financial systems. APTs are designed to steal corporate / national secrets and/or harm national/corporate interests. It is difficult to recognize targeted malware by antivirus, IDS, IPS and custom malware detection tools. Attackers leverage compelling social engineering techniques along with one or more zero day vulnerabilities for deploying APTs. Along with these, the recent introduction of Crypto locker and Ransom ware pose serious threats to organizations/nations as well as individuals. In this paper, we compare various machine-learning techniques used for analyzing malwares, focusing on static analysis.

Current Unmanned Aerial Vehicle (UAV) swarm designs prioritize physical reliability over network security, leaving systems vulnerable to increasingly sophisticated cyber threats in complex environments. Existing defense methods are mostly limited to peripheral network security technologies, such as encryption, authentication, and firewalls. Consequently, they lack deep integration at the formation architecture level. This separation results in a disconnect between system reliability design and security protection mechanisms, making it difficult to effectively deal with high-level security threats such as internal backdoor vulnerabilities. To this end, this paper proposes an endogenous security architecture for UAV swarm based on dynamic heterogeneous redundancy (DHR) and cooperative supervision. Firstly, a theoretical model of DHR system for UAV swarm was constructed, and discrete nodes are abstracted as dynamic heterogeneous resource pools. Through the formal definition of the heterogeneous executor space, redundancy adjudication mechanism, and dynamic scheduling method, we demonstrate how this architecture suppresses common mode failures by introducing internal and external uncertainties, thereby realizing the coordination and unification of safety and security. Secondly, a distributed security control strategy based on cooperative supervision is proposed, which uses cross-validation between neighbors to replace the centralized adjudication of traditional DHR, solves the problem of anomaly detection in a decentralized environment, and combines reactive cleaning and periodic disturbance scheduling to give the system the ability to self-heal against unknown threats. Simulations in various attack scenarios demonstrate the proposed method’s superiority over traditional architectures. Especially in the simulated dormant multi-mode Advanced Persistent Threat (APT) scenario, the system can still maintain availability of more than 81%, which effectively verifies the key role of the coordination mechanism of heterogeneity, redundancy and dynamics in enhancing the safety and security of UAV swarms.

Orchestration of APT malware evasive manoeuvers employed for eluding anti-virus and sandbox defense

Advanced Persistent Threats (APTs) have created new security challenges for critical infrastructures due to their stealthy, dynamic, and adaptive natures. In this work, we aim to lay a game-theoretic foundation by establishing a multi-stage Bayesian game framework to capture incomplete information of deceptive APTs and their multistage multi-phase movement. The analysis of the perfect Bayesian Nash equilibrium (PBNE) enables a prediction of attacker's behaviors and a design of defensive strategies that can deter the adversaries and mitigate the security risks. A conjugate-prior method allows online computation of the belief and reduces Bayesian update into an iterative parameter update. The forwardly updated parameters are assimilated into the backward dynamic programming computation to characterize a computationally tractable and timeconsistent equilibrium solution based on the expanded state space. The Tennessee Eastman (TE) process control problem is used as a case study to demonstrate the dynamic game under the information asymmetry and show that APTs tend to be stealthy and deceptive during their transitions in the cyber layer and behave aggressively when reaching the targeted physical plant. The online update of the belief allows the defender to learn the behavior of the attacker and choose strategic defensive actions that can thwart adversarial behaviors and mitigate APTs. Numerical results illustrate the defender's tradeoff between the immediate reward and the future expectation as well as the attacker's goal to reach an advantageous system state while making the defender form a positive belief.

Cyberattacks penetrate the server and perform various malicious acts such as stealing confidential information, destroying systems, and exposing personal information. To achieve this, attackers perform various malicious actions by infecting endpoints and accessing the internal network. However, the current countermeasures are only anti-viruses that operate in a signature or pattern manner, allowing initial unknown attacks. Endpoint Detection and Response (EDR) technology is focused on providing visibility, and strong countermeasures are lacking. If you fail to respond to the initial attack, it is difficult to respond additionally because malicious behavior like Advanced Persistent Threat (APT) attack does not occur immediately, but occurs over a long period of time. In this paper, we propose a technique that detects an unknown attack using an event log without prior knowledge, although the initial response failed with anti-virus. The proposed technology uses a combination of AutoEncoder and 1D CNN (1-Dimention Convolutional Neural Network) based on semi-supervised learning. The experiment trained a dataset collected over a month in a real-world commercial endpoint environment, and tested the data collected over the next month. As a result of the experiment, 37 unknown attacks were detected in the event log collected for one month in the actual commercial endpoint environment, and 26 of them were verified as malicious through VirusTotal (VT). In the future, it is expected that the proposed model will be applied to EDR technology to form a secure endpoint environment and reduce time and labor costs to effectively detect unknown attacks.

Designing systems that can infiltrate networks, remain undetected for long periods, and extract sensitive information make Advanced Persistent Threats (APTs) some of the most sophisticated and powerful cyber-attacks. Most APTs circumvent conventional Intrusion Detection Systems (IDS) because of signature-based detection technology that relies on static patterns and is blind to new forms of threats. To bridge this gap, we put forth a comprehensive framework that applies machine learning through the incorporation of Random Forest, Isolation Forest, and Long Short-Term Memory (LSTM) networks aimed at APT detection. Random Forest, as a supervised learning algorithm, will extract known attack patterns while Isolation Forest, as an unsupervised algorithm, will capture anomalous network behavior corresponding to unknown attacks. With LSTM networks, complex multivariate network traffic patterns are analyzed to identify complex attack behaviors. The UNSW-NB15 dataset, which contains various attack scenarios as well as normal network traffic, is used for training and testing the models. The combination of these technologies is deployed on a scalable serverless infrastructure through A WS SageMaker and real-time data streams are processed using A WS Kinesis. The experimental findings show substantial improvements in accuracy, precision, and recall in both batch and real-time detection scenarios. This approach provides a comprehensive and flexible solution to counter evolving cyber threats with enhanced network security.