They are sent to trick recipients into opening malicious attachments (or executing files downloaded via presented links).Įxamples of unreliable sources for downloading files/programs are unofficial pages, torrent clients and other Peer-to-Peer networks, third-party downloaders, etc. When emails are used to deliver ransomware (and other malware), they contain malicious attachments or links. Their goal is to trick users into executing ransomware by themselves.
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Typically, they achieve it via emails, cracked software download websites (and other untrustworthy sources for downloading software/files), fake updaters, or Trojans. How did ransomware infect my computer?Ĭybercriminals use various ways to trick users into infecting computers with ransomware. Thus, it is recommended to have a data backup stored on a remote server or unplugged storage device.
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It is rarely possible to recover files for free without paying a ransom.
Examples of different ransomware variants are GonnaCope, Axxes, and PARKER. Most ransomware variants encrypt files (and modify filenames) and create a ransom note. In order to prevent ransomware from encrypting more files and infecting other computers, it is necessary to remove it as soon as possible. It is important to mention that ransomware can cause more damage while present. Victims often do not receive a decryption tool even if they pay for it. Data recovery without the interference of cybercriminals is possible only when a third-party decryption tool is available on the Internet or victims have a copy of their files stored outside the infected device.Ĭybercriminals behind ransomware attacks should not be paid. Usually, it is impossible to decrypt files without tools that can be provided only by the attackers. Also, the ransom note mentions that files will be published if victims do not contact (and pay) the attackers. It states that files are encrypted and can be decrypted by following the instructions on the provided Tor website. The ransom note states that victims should not try to recover files manually (by themselves) because it can damage them. Screenshot of files encrypted by this ransomware: An example of how ONYX modifies filenames: it renames " 1.jpg" to " 1.jpg.ampkcz", " 2.png" to " 2.png.ampkcz", and so forth. Like most ransomware variants, ONYX also creates a ransom note. Moreover, it deletes files larger than 200 megabytes in size and replaces them with random files. It encrypts files and appends a randomly generated extension to filenames. ONYX is ransomware based on another ransomware called CONTI.