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Useful tutorials on various PC troubleshooting topics. Video tutorials.

How to remove Kizu Ransomware and decrypt .kizu files

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Kizu Ransomware, also known as .kizu file virus, is a type of malware that encrypts files on a victim’s computer and demands payment in exchange for the decryption key. It is the latest variant of STOP/Djvu Ransomware and is capable of hitting any version of Windows. Once the malware infects a system, it drops a ransom note named _readme.txt in each directory containing encrypted files. This ransom note serves to notify victims that their files have been encrypted and outlines the conditions for obtaining the decryption key. The attackers behind Kizu demand a ransom payment from the victims in exchange for restoring access to the locked files. Kizu Ransomware encrypts victim's files with Salsa20 encryption and appends the .kizu extension to the filenames of all affected files. It targets various types of files, such as videos, photos, documents, and more.

How to remove Cactus Ransomware and decrypt .CTS1 files

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Cactus Ransomware is a type of malware that encrypts all the data on your computer, including images, documents, excel tables, music, videos, and more. It adds its own .CTS1 extension to every file, leaving a ransom note called cAcTuS.readme.txt in each folder with the encrypted files. For instance, an image named photo.jpg will be renamed to photo.jpg.CTS1. Cactus encrypts files twice and adds a new extension after each process (.CTS1.CTS7) when run in both quick and normal modes. Cactus Ransomware exploits known vulnerabilities in VPN appliances to gain initial access to targeted networks. Once inside the network, Cactus actors attempt to enumerate local and network user accounts in addition to reachable endpoints before creating new user accounts and leveraging custom scripts to automate the deployment and detonation of the ransomware encryptor via scheduled tasks. During encryption, Cactus employs OpenSSL’s envelope implementation to encrypt victims’ files with AES and RSA, appending the files with the extension cts\d.

How to remove Kiqu Ransomware and decrypt .kiqu files

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Kiqu Ransomware is a type of malware that encrypts files and demands a ransom in exchange for their decryption. It belongs to the STOP/DJVU ransomware family and uses the Salsa20 encryption algorithm. The virus is usually distributed through dubious programs, such as "free" versions of popular apps, cheat engines, Windows activators, and keygens. Kiqu ransomware adds the .kiqu extension to each encrypted copy of a file. Kiqu Ransomware generates a text file named _readme.txt that contains a ransom note. The ransom note demands a payment of $490 or $980 in Bitcoins and provides an email address for contacting the cybercriminals. The sample of such ransom note is presented below.

How to remove SophosEncrypt Ransomware and decrypt .sophos files

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SophosEncrypt is a new ransomware-as-a-service (RaaS) that has been disguising itself as the well-known cybersecurity provider Sophos, thus masking its true identity and intentions. The ransomware encrypts files on the infected system using a complex encryption algorithm, making data useless on the infected system. It affects commonly used data such as pictures, documents, videos, databases, and archives. The ransomware appends a unique machine identifier, the email address entered during setup, and the suffix .sophos to every file it encrypts. Cybersecurity researchers have uncovered that the ransomware encryptor is written in Rust and uses the C:\Users\Dubinin path for its crates. However, it is still unclear how the ransomware is being promoted and distributed. Most modern ransomware uses strong encryption methods such as RSA-2048 or AES-128, making it impossible to get your files back unless you have the decryption key. It is still unclear which encryption method SophosEncrypt uses. The ransomware creates a ransom note (information.hta) for every folder with encrypted files, and replaces the impacted device's wallpaper to show a message indicating system-wide data encryption with the Sophos logo.

How to remove Mitu Ransomware and decrypt .mitu files

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Mitu Ransomware is a type of malware that encrypts the files on a victim's computer, rendering them unusable. Mitu is a harmful file encryption virus that uses a strong AES-256 encryption key algorithm to encrypt the files of an infected computer system. Like other ransomware, Mitu Virus also overtakes your confidential data and asks for a ransom from the victim. It is marketed as a useful app in online advertisements, on social media, and in emails. The Mitu ransomware attack is launched when the computer user downloads and installs the program. It begins by connecting to a remote server in order to download more malicious files. Additionally, it awaits instructions and the private key from the distant computer that was set up to maintain the encryption process. When the Mitu ransomware infects files, it adds a distinctive .mitu suffix to them, making them inaccessible and unusable without a specific decryption key. Once the encryption process is concluded, Mitu creates a ransom note titled _readme.txt.

How to remove Miza Ransomware and decrypt .miza files

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Miza Ransomware is a dangerous virus that encrypts files on infected computers and demands payment (usually on cryptocurrency) for their decryption. It is part of the Djvu ransomware family and is known for its wide distribution and high infection rates. The virus encrypts files by appending a .miza extension to the original filename. For example, a file photo.jpg will get changed into photo.jpg.miza after this ransomware attack. Upon successful transformation of files, a ransom note _readme.txt is dropped in all compromised folders. Miza ransomware uses a strong encryption algorithm called Salsa20 to encrypt victim's files. The encryption process is almost unbreakable, making it difficult to recover files without the decryption key. The encryption technique employed by Miza Ransomware is a critical factor in its effectiveness. However, detecting the encryption process can be challenging due to its minimal and often unnoticed symptoms, such as occasional spikes in RAM and CPU usage.

How to remove DEADbyDAWN Ransomware and decrypt .OGUtdoNRE files

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DEADbyDAWN is a type of ransomware that encrypts files and alters their names by replacing them with a random string of characters and appending its unique extension. The ransomware drops fifty text files onto the desktop, labeled sequentially from README0.txt to README50.txt. Each of these files contains an identical ransom note. It is important to note that different samples of DEADbyDAWN append different extensions to filenames. DEADbyDAWN alters file names by replacing them with a random string of characters and appending its unique extension (.OGUtdoNRE). Different samples of DEADbyDAWN may append different extensions to filenames. DEADbyDAWN uses encryption to render files inaccessible. The encryption method used by DEADbyDAWN is not specified or yet unknown. The sample of the ransom note is presented in the text box below.

How to fix Roblox error code 403

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Roblox Error Code 403 is a common error that players encounter when trying to access their favorite experiences in the world of Roblox. The error message indicates that access is denied, meaning that something is preventing you from connecting and accessing the Roblox servers. In this article, we will discuss the possible causes of Roblox Error Code 403 and provide solutions to fix it. There are several reasons why you might encounter Roblox Error Code 403, including: using a VPN, using an unsecured network, unstable WiFi connection, Roblox server is under maintenance or facing downtime, corruption in the Roblox cache folder. In this article we prepared some solutions to fix Roblox Error Code 403.