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This article introduces how ESXiArgs operates, and offers an approach to identifying and addressing the threat. Examining the characteristics and behaviours of ransomware, it provides detailed insight into the tactics it uses and how these can be detected in a vulnerable environment. It also explores strategies and best practices for cleaning and disinfecting compromised systems, restoring trust and security to the affected infrastructure.

With this study, we seek to offer a deep knowledge about the reconnaissance activity in cybersecurity, so that professionals from different fields can consider these tactics as an integral part of their security strategies. This study also aims to increase general understanding of these techniques and how they can be used to effectively protect information and systems. 

The evolution of communications in society is also having an impact on the industrial world. With the arrival of 5G, many industrial companies have considered migrating some of their communications to take advantage of the characteristics of this new mobile communications band, such as the reduction of latency times, the increase in connection speed or the exponential increase in the number of devices that can be connected to the network. These characteristics fit perfectly with the industrial mentality, where there are a multitude of interconnected devices between which there cannot be a communication cut due to the criticality of the processes they implement. This article aims to comment, in addition to all the advantages that 5G provides to the industry, the different uses that can be given currently and the complexity of implementing these communications in some devices for subsequent deployment in the industry. Also, to specify possible vulnerabilities in communications using 5G networks.

The history of cybersecurity is marked by names that have left an indelible mark on the field of digital threats. Among them, Maze, Egregor and Sekhmet stand out as notable ransomware variants, whose similarities go beyond mere coincidence. In this article, we will unravel the tactics these ransomwares employed,  the encryption mechanisms they used, and the evasion and propagation strategies they employed. The review of these malware will offer us a deeper insight into the persistent threat of ransomware, as well as the importance and need to strengthen our cybersecurity posture.

At the end of 2019, the Ragnarok (or Asnarok) ransomware appeared leaving a trail of digital victims in its path. The malware not only encrypted the files and demanded a ransom, but also threatened to erase and publish the stolen data. This article offers an in-depth look at Ragnarok, from its design and motivation to its methods of infection and spread. In addition, it provides different methods of response and disinfection.

LockerGoga is  a ransomware-type malware, first discovered in 2019, that infects computer systems, encrypts your files, and demands a ransom in cryptocurrencies in order to recover them. Unlike others, LockerGoga focuses on attacking businesses and government organizations. This article describes what it is and explains the relevant methods to respond to this threat

Technical reporting is one of the most important parts of the completion of a task, as it reflects the results of all the work done. Moreover, it does not only constitute a final deliverable for a customer, or for the decision-makers within an organization, but also acts as the link between the person or team that has carried out the task and the decision-makers, based on the findings.

En este estudio, se expone brevemente el origen y evolución de la amenaza ransomware LockBit 3.0, a través del análisis de varias muestras maliciosa, con el objetivo de facilitar la información necesaria para poder identificar las características propias de este malware, su comportamiento y técnicas empleadas, permitiendo así una mejor identificación y respuesta ante ella.

Nobelium es la denominación de Microsoft para un grupo de atacantes que, según la atribución llevada a cabo por la Agencia de Seguridad de Infraestructura y Ciberseguridad (CISA) de Estados Unidos, pertenecen al Servicio de Inteligencia Exterior (SRV) de Rusia. Este grupo criminal es conocido por el ataque a la cadena de suministro de SolarWinds, y una campaña masiva de phishing haciéndose pasar por una empresa de desarrollo estadounidense.