Viruses

How to remove MedusaLocker Ransomware and decrypt .readtheinstructions, .decrypme or .encrypted files

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We have already deconstructed lots of ransomware like Ouroboros, Ako, NEMTY, and others. Today, we are topping up our list with MedusaLocker Ransomware. This dreadful software is known to be encrypting the files of innocent users, therefore, making them unretrievable until a ransom is paid. Virus got its name because of the name of the project file, that says: MedusaLocker.pdb. Also, the "Medusa" section is created in the registry. Once installed on a computer, it rapidly blocks off the access to your data by assigning a unique .encrypted or .readtheinstructions or .readinstructions extensions to each file. This way, 1.jpg changes itself to 1.jpg.readtheinstructions. Unfortunately, any manipulations are useless because of the strong cipher that is hard to break manually. When encrypting files, AES encryption will be used to encrypt each file, and then the AES key will be encrypted with the RSA-2048 public key included in the Ransomware executable. Depending on ransomware edition, extensions may also look like .bomber, .boroff, .breakingbad, .locker16, .newlock, .nlocker, and .skynet as well. After successful encryption of data, extortionists add an HTML or text file, called ransom note, that contains the necessary information on how to recover your data.

How to remove GarrantyDecrypt Ransomware and decrypt .bigbosshorse, .heronpiston or .horsedeal files

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GarrantyDecrypt has taken cemented position around the ransomware category and already deprived a fair amount of nerves and money of its victims. Like other ransomware, it infiltrates your computer by running encryption scripts that scan your device and therefore assign unbreakable cipher to each file. The first versions of this malware used .garrantydecrypt, .decryptgarranty, .protected, .NOSTRO, .odin, .cosanostra, .cammora, .metan, .spyhunter, .tater, .zorin extensions. However, encryption virus gets constantly modified and suffixes are changed too. Most recent extensions used by GarrantyDecrypt Ransomware are: .bigbosshorse, .heronpiston or .horsedeal. To illustrate, after encryption, 1.mp4 will be changed to 1.mp4.bigbosshorse or other abovementioned extensions. Unfortunately, any manual attempts to unlock the data are desperate. Once the encryption is finished, you will be presented with a ransom note created on desktop notifying that your data has been blocked.

How to remove NEMTY Ransomware and decrypt .nemty files

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The odds of getting hacked are progressively escalating each day because of the wide distribution of malware and other social engineering tricks. NEMTY Ransomware is not an exception either, that was originally revealed in 2019 and revived with a new force with NEMTY 2.5 REVENGE Ransomware in 2020. Like other types of ransomware, it is meant to encrypt files stored on the user's PCs by using the AES-256 encryption algorithm. However, the algorithm is used with a mistake and looks more like AES-128/192. It appends unbreakable code that restricts access to data like .docx, .xlsx, .pptx, .mp3, .mp4, .png and other types of files. Once it has encrypted your data, the virus, therefore, alters the extension name to .NEMTY. The most recent varieties use the complex extension .NEMTY_XXXXXXX, where XXXXXXX is a random 7-digit alphanumerical sequence. After the encryption process is finished NEMTY leaves a note on desktop notifying that your data was encrypted and the only way you to recover it is by paying a ransom (approximately 1000$).

How to remove STOP Ransomware and decrypt .btos, .npsg, .reha or .topi files

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STOP Ransomware is a cynical virus that knocks out the soil and leaves users at a loss because it affects the most intimate type of information - personal photos, videos, e-mails, as well as documents, archives, and other valuable data. Ransomware is a type of threat that not only encrypts those files but demands a buyout. STOP Ransomware is officially the most wide-spread and dangerous virus among the file-encrypting type of malware. There have been more than 200 versions of it and latest struck with .btos, .npsg, .reha and .topi extensions. Such suffixes are added by STOP Ransomware to files it encodes with its powerful AES-256 encryption algorithm. In 99% of cases, its algorithms are unbreakable, however, with instructions and utilities covered in this article you get this 1% chance of recovery. First of all look at the ransom note, that STOP Ransomware copies to the desktop and affected folders. It serves as a marker to distinguish one version from another.

How to remove STOP Ransomware and decrypt .kodc, .nosu, .piny or .redl files

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If your files became unavailable, unreadable and got .kodc, .nosu, .piny or .redl extensions it means your computer is infected with a variation of STOP Ransomware (or as it is, sometimes, called DjVu Ransomware). It is a malicious program that belongs to the group of ransomware viruses. This virus can infect almost all modern versions of the operating systems of the Windows family, including Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10. The malware uses a hybrid encryption mode and a long RSA key, which virtually eliminates the possibility of selecting a key for self-decrypting files. Like other similar viruses, the goal of STOP Ransomware is to force users to buy the program and key needed to decrypt files that have been encrypted. The version, that is under research today is almost identical to the previous ones, except new e-mails used for contacting malefactors and new extensions added.

How to remove Dharma-Wiki Ransomware and decrypt .[bitlocker@foxmail.com].wiki files

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Dharma-Wiki Ransomware is a file-encrypting type of malware designed to deprive the money and nerves of its victims. It belongs to the notorious Dharma/Crysis Ransomware family. It interferes with file extensions by changing them to .id-{random-8-digit-alphanumerical-sequence}.[bitlocker@foxmail.com].wiki and remains encrypted until a ransom is paid. After the blocking process is finished, it will leave a ransom note on your desktop notifying that your data was successfully encrypted and requires action. To encrypt your files, you have got to contact hackers via one of the methods presented in the note and pay a specific fee to get your files back. This kind of frauds is trying to encrypt the most precious data stored on your PC like text documents, videos, images, and others. Therefore, they gamble on the value of your data to push you into paying an equal exchange. Of course, cybercriminals are trying to hurry you up by threatening that if you do not pay within 24 hours, they will raise the price up. If you refuse paying a ransom, they might also begin saying that they will spread your data to third parties and they will make a bad use of it. The ransom must be paid solely in Bitcoin cryptocurrency apparently because of its secure blockchain technology. Unfortunately, there has not been any free tool that could take off the blocking algorithm from files so far.