Viruses

STOP Ransomware is disastrous virus, that uses AES encryption algorithms to encrypt user's files. After encoding files obtain following extensions: .nppp, .mool, .mmnn or .ooss. The malware aims at encryption of personal data, such as documents, photos, videos, music, e-mails. Deep encoding makes those files unapproachable and decryption instruments available today cannot help in most cases. To start automatically each time the OS starts, the cryptographer creates an entry in the Windows registry key that defines a list of programs that start when the computer is turned on or restarted. To determine which key to use for encryption, STOP Ransomware tries to establish a network connection with its command server. The virus sends information about the infected computer to the server and receives the encryption key from it. In addition, the command server can send additional commands and modules to the virus that will be executed on the victim's computer. If the data exchange with the command server was successful, the virus uses the received encryption key (online key). This key is unique for each infected computer. If STOP Ransomware was unable to establish a connection with its server, a fixed key (offline key) will be used to encrypt files.

There has been quite a lot of users that keep facing this kind of error when trying to enter a website. After a long waited connection website fails to upload and shows the following message This site can't be reached and ERR_TIMED_OUT. The reload or reboot of the browser is totally useless, otherwise, you would not be looking for this article. This may be provoked by various kinds of issues starting with PC and browser hiccups and ending up with internet problems in an outside prism. In this article, our team has prepared a list of tools that you can apply to finally get rid of this problem and continue surfing calmly through the web.

STOP Ransomware is a prevalent encryption virus and blackmailer, that targets valuable personal files. After infection and data encoding hackers start extorting the ransom. There have been more than 200 versions of the ransomware, each version gets slightly modified to circumvent the protection, but main footprints remain the same. The malware uses AES-256 in CFB mode. Shortly after launch, the STOP family cryptographer executable connects to C&C, retrieves the encryption key and infection ID for the victim's PC. Data is transmitted over simple HTTP in the form of JSON. If C&C is not available (the PC is not connected to the Internet, the server itself is not working), the cryptographer uses the hard-coded key and ID in it and performs offline encryption. In this case, you can decrypt the files without paying a ransom. Variations of STOP Ransomware can be distinguished from each other by ransom notes and extensions it adds to encrypted files. For STOP Ransomware under research today, extensions are: .bboo, .rooe, .repp or .alka. The ransom note file _readme.txt is presented below in the text box and picture.

Ako Ransomware is one of the fraudulent tools that is aimed to encrypt valuable files on user's computers and force them into paying a ransom. Ako Ransomware's activity was detected at the beginning of 2020 and has already been spread around Windows users. When it infiltrates your device, it raptly goes through every single folder offline consecutively restricting access to files like images, videos, PDFs, and others. Hackers use sophisticated methods to negate any interference from file decrypting tools by assigning unique cipher to each file which makes it almost impossible to decrypt them. Besides that, Ako Ransomware creates id.key file and puts it into the folder with encrypted data, that randomly changes the extension to a random set of letters and numbers, so it looks like this: 1.jpg.2mzWmb. After all, it generates the ransom note on your desktop with the necessary information to help you decrypt the files.

DCRTR-WDM Ransomware is encryption virus, endangering unprotected user's data on Windows computers. It is a successor of DCRTR Ransomware and uses the AES encryption algorithm to cipher information and demand ransom of $1270 in BTC (BitCoins). The virus was allocated to a separate subspecies in November 2018 and continued its activity in 2019 and 2020. DCRTR-WDM developers have been hiding their malware under fake "Windows Defender Monitor" updaters that can be downloaded from the web. Regrettably, once installed, it breaks all expectations because, instead of defending your PC, it instantly starts running scripts to encrypt the data stored on your computer. Currently, several generations of malware are active and distributed in the web. Besides that, frauds offer to decrypt one low-weight file that can be sent through the e-mail. This is just a trick to prove integrity and fool users into paying a ransom. However, you should never rely on their promises, because their main purpose is to deflate money and continue hunting for other victims. Unfortunately, bypassing the encryption often brings no fruits whatsoever, because developers use intricate AES-256 algorithms to encipher the data. However, with the help of our instructions, you will be able to remove it from your computer to prevent further data loss.

BitPyLock was discovered by MalwareHunterTeam and therefore categorized as ransomware. The penetration of this kind of malware leads to instant encryption to all of the files stored on your computer. BitPyLock primarily attacks photos, videos, databases and office projects which appear to be most valuable for regular users. The program uses strong military-grade encryption algorithm, RSA-4096 to be exact, thereafter changing each file extension to .bitpy. For example, 1.mp4 will be transformed into 1.mp4.bitpy which makes it impossible to open any of those. There are also other forms of this ransomware that exploit data with .domain_name or .andradegalvao extensions. BitPyLock Ransomware makes everything possible to restrict you from manual recovery by deleting backup files from the system as well. By the end of encryption, it creates an HTML note with ransom payment details.