![]() Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data: We recommend that you do not contact these cyber criminals, since, in return for a decryption tool, they will demand payment of a ransom.įurthermore, ransomware developers often provide no decryption tools even if their demands are met. Another way to recover files free of charge is to use a backup and restore everything from there. Therefore, it might be possible to recover files using file recovery software. Note, however, that Spyhunter encrypts only file headers. Most ransomware-type programs encrypt data using cryptography algorithms ( symmetric or asymmetric) that make decryption, without using a specific decryption tool or key, impossible. ![]() ![]() Note that SpyHunter anti-virus suite and Enigma developers have no association with this ransomware.Ĭyber criminals use SpyHunter's name to adversely affect its reputation - this is a case of defamation. As mentioned, SpyHunter is the name of a legitimate anti-spyware computer program, however, the ransomware developers disguise their malicious program as legitimate software. The email message should contain a unique ID (appointed to each victim). They encourage victims to contact them within 72 hours via the email address. They go on to mention that they specialize in creating and removing viruses. Spyhunter's ransom message states that all files are encrypted and can only be decrypted with the help of cyber criminals who developed this ransomware. This version was discovered by Karsten Hahn. It is possible that Spyhunter is a version of GarrantyDecrypt (another ransomware infection). It also creates the " $HOWDECRYPT$.txt" text file containing a ransom message. spyhunter" extension to each encrypted file.įor example, " 1.jpg" becomes " 1.jpg.spyhunter". Developers (cyber criminals) use it to encrypt victims' data (by blocking access) unless a ransom is paid. These findings in the survey will be highly beneficial to understand the effects of ransomware attacks in critical infrastructure environments and the use of machine learning to detect and prevent these attacks.Spyhunter is the name of a legitimate anti-malware program, however, cyber criminals have recently started to exploit this name in their ransomware campaign. This research study is mainly focused on Windows OS vulnerabilities. The paper briefs the various types of ransomware, vulnerabilities, attack methodologies, impacts, mitigation and prevention techniques of the attacks. The article uses the systematic literature review (SLR) approach to provide significant study on the ransomware attacks as it is the area that requires top most attention in critical infrastructure. This still creates challenges to trace the attacker or attackers’ networks. The crypto-currency is an untraceable payment method that the attacker uses to receive ransom from victims to conceal his/her identity and location. ![]() Although there are many malware attacks, ransomware is considered most dangerous as it imposes a high financial burden on the organization. The attackers launching ransomware attacks use different techniques to hijack the users’ or organizations’ files and resources to demand ransom in exchange to free the encrypted/captured data or resources. Ransomware is the most predominant cyber threat in the digital infrastructure. ![]()
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