Cerber virus -a new audio message ransomware

2017

Ransomware is an emerging threat to the computer users as well as the organization that denies the user to access the files until the payment is cleared. This research paper will discuss about the evolution of the ransomware with statistics supported and the ways that ransomware can infects the computer systems. Other than that, the recommendations to the computer users when being infected and the preventive measures that can be done to reduce the chances of becoming a ransomware victim are included in the research paper. The objectives of this paper is to enhance the awareness of the computer users, especially in an organizational environment on the attack nature of the ransomware and taking proactive action to deter the ransomware attack.

Journal of internet technology and secured transactions, 2020

There are many variants of different malware (malicious software) like trojans, adware, keylogger, worms, and others, but ransomware is the most catastrophic among them. Ransomware is the type that encrypts the user file system and seeks compensation in return to make it usable again. Ransomware has been evolving at a massive pace and reached an all-time high, with 552 variants recorded in the year 2017 and 352 variants in 2018. In comparison to the prior years, the number was significantly higher than the combination of all the previous years. The primary reason for this massive shift is the ease of production of new ransomware variants as well as ransomware being used as a service. The paper highlights a worrying state for the current safeguard measures of the anti-virus industry, a significant majority, more than 50% of ransomware samples produced in both the years are actively encrypting the users' machine. Despite the advancement and regular monitoring of the antivirus industry, the ransomware problem remains a significant issue. The concern is not only for the industry but also for the end-user as the new variants are being produced regularly, and old variants are not being eliminated. The following paper tries to raise awareness among the community about the increasing ransomware problem and the importance of taking proper preventive measures to safeguard against the rising attacks.

Ransomware is a type of malicious software. Computers infected with ransomware have restricted access to the system. It is a malicious program, and money must be provided to the creator of the malicious code to release it. With the substantial increase in the number of ransomware attacks, on May-12-2017, network security issues began to heat up. This article describes the types of countermeasures against ransomware and cyber terrorism. In recent years, ransomware has been under constant attack and has high infectious power: S pora, CryptoLocker, Locky, CryptoWall, Petya, Cerber, S anam, Aris Locker, Jigsaw, WannaCry, and Reveton. Ransomware protection is not any longer 100% free. However, you can secure ransomware through programmed refreshes, antibody establishment, and span backups. Need framework and organization. Figure out how to prevent ransomware from your organization and individual clients. Most ransomware is transmitted via phishing emails. The fastest way is to measure the steps taken by various agencies to stop this malware and decrypt it. The criminals behind the ransomware caused not only largescale damage to sensitive infrastructure but also billions of dollars in benefits from patients around the world. The world is still collecting money from innocent people. Nine types of ransomware, small software, and several examples of malware are studied. The outcomes show that reflected programming and innocuous applications can be recognized. This is a way to stop companies and individuals from ransomware

Academia Letters, 2022

Cybersecurity threats are real. As per the Global Cybersecurity Index report by International Telecommunication Union, there are 3.5 billion people online. The estimated storage used is 44 Zettabytes. There is no risk of shortage of storage due to cloud computing. E-government services are also proliferating. Industry 4.0 is here, and the economies have gone digital. A lot of traditional work has shifted into cyberspace(International Telecommunication Union, 2020). This has led to more cyberattacks. Global losses due to cyberattacks and cybercrimes are estimated at around $1 trillion in 2020 and $6 trillion in 2021. The scale of these losses makes it an imperative to study cybersecurity threats and their implications. This article will provide an overview of the aforementioned points. An important threat to cybersecurity is a ransomware attack. Ransomware is a form of malware that encrypts victim's files. The attacker demands a ransom from the victim to restore access to the files. The instructions for payment are displayed and are demanded in bitcoins. After the payment is made, decryption key is sent to the victim. Ransomware attack can deny access to the entire network too. The estimated global damage from ransomware attacks increased from around $8 billion in 2018 to $20 billion in 2020. Ransomware attack may lead to even death. In 2020, a hospital in Germany was locked out of their systems and unable to treat patients. A woman who needed urgent care had to be rerouted to another hospital 20 miles away but did not survive(Cybersecurity Trends, 2021). There is a close linkage between cybersecurity and ransomware. It would be interesting to understand how these have evolved over the years.

International Journal of Engineering Research and Technology (IJERT), 2020

https://www.ijert.org/ransomware-threats https://www.ijert.org/research/ransomware-threats-IJERTCONV8IS15015.pdf Ransomware is a malware that prevents users from accessing their system or limits their use of the system. It locks the system's screen or the users' files thus preventing them from accessing or using it. Demand for a ransom is made and access is denied unless ransom is paid. Now a days, some modern ransomwares, collectively called as crypto ransomware can encrypt certain file types on infected systems. The users are then forced to pay the ransom through certain online payment methods to get a decryption key. Ransomware incidents are targeted at various organizations across industries and geographies and have brought a threat of disruptive and destructive attacks. The purpose of this paper is to examine and raise awareness on ransomware attack, its effects, and some of the preventive measures from both general and technical perspectives.

International Journal of Scientific Research in Science and Technology, 2019

Ransomware is a very severe cyber security threat since its inception. Ransomware has grown to be one of the biggest problems in the era of information technology. It is a type of malware which blocks a computer or encrypts the data and demands money in the form of virtual currency like Bitcoin for restoration of the functionality. Basically, two types of ransomware are found. First is encrypting ransomware which encrypts files using advanced encryption algorithm and another is locker ransomware which locks your computer system. Normally, crypto ransomware uses combination of both encryption techniques symmetric and asymmetric for encrypting the data. Ransomware threats are becoming more prevalent in enterprises. The purpose of these threats is quite simple. They are attempting to extort money from their victims with promises of restoring the functionality or restoring encrypted data whatever. But there is no guarantee that after paying the ransom you will give access to your computer system or restore files again.

2021

Ransomware transformed into a form of criminal business. malware that takes over a victim's machine or data unusable. it is booming so fast all the world, it is a dangerous threat to users‘ and corporates‘ data file. Ransomware encrypts files on an infected computer and holds the key to decrypt the files until the victim pays a ransom (this is why it is called ransomware). Ransomware is causing losses financially from hundreds of millions of dollars annually. Every year passes we observe a new version of this destructive malware. And the new versions have new technologies to bypass the defenders. In this paper, we present a brief history of ransomware, the best methods to prevent the infection, how to detect it, and how to recover from this infection. This monster has estimated financial damage of $1 billion. The fact that many Internet users appear to have no awareness of ransomware and do how to awake and protect themselves, they think that with a highly automated tool like it...

Ransomware is a type of malware that prevents or restricts user from accessing their system, either by locking the system's screen or by locking the users' files in the system unless a ransom is paid. More modern ransomware families, individually categorize as crypto-ransomware, encrypt certain file types on infected systems and forces users to pay the ransom through online payment methods to get a decrypt key. The analysis shows that there has been a significant improvement in encryption techniques used by ransomware. The careful analysis of ransomware behavior can produce an effective detection system that significantly reduces the amount of victim data loss.

ACM Computing Surveys, 2021

Ransomware remains an alarming threat in the 21st century. It has evolved from being a simple scare tactic into a complex malware capable of evasion. Formerly, end-users were targeted via mass infection campaigns. Nevertheless, in recent years, the attackers have focused on targeted attacks, since the latter are profitable and can induce severe damage. A vast number of detection mechanisms have been proposed in the literature. We provide a systematic review of ransomware countermeasures starting from its deployment on the victim machine until the ransom payment via cryptocurrency. We define four stages of this malware attack: Delivery, Deployment, Destruction, and Dealing. Then, we assign the corresponding countermeasures for each phase of the attack and cluster them by the techniques used. Finally, we propose a roadmap for researchers to fill the gaps found in the literature in ransomware’s battle.