Tutorials

Also known as R.Ransomware, Rozbeh is a ransomware infection that encrypts system-stored data to blackmail victims into paying money for its recovery. During encryption, it highlights blocked data by assigning random characters consisting of four symbols. For instance, a file like 1.pdf may change to 1.pdf.1ytu, 1.png to 1.png.7ufr, and so forth. Depending on what version of Rozbeh Ransomware made an attack on your system, instructions explaining how data can be recovered may be presented within text notes read_it.txt, readme.txt, or even in a separate pop-up window. It is also worth noting that the most recent ransom infection developed by Rozbeh swindlers is called Quax0r. Unlike other versions, it does not rename encrypted data and also displays its decryption guidelines in Command Prompt. In general, all the ransom notes mentioned above contain identical patterns of guiding victims to pay the ransom - contact malware creators through Discord or, in some cases, by e-mail and send 1 Bitcoin (about $29,000 now) to the crypto address of cybercriminals. After the payment is done, extortionists promise to send a file decryptor along with the necessary key to unlock encrypted data. Unfortunately, in the majority of cases, encryption methods used by cybercriminals to render files inaccessible are complex, making manual decryption near-impossible. You can give it a try using some third-party instruments in our tutorial below, however, we are unable to guarantee they will actually work.

ZareuS is the name of a ransomware infection that encrypts files and extorts an amount in crypto from victims. During encryption, the virus alters file appearance using the .ZareuS extension. In other words, if a file like 1.pdf ends up affected by the infection, it will be changed to 1.pdf.ZareuS and reset its original icon as well. Thereafter, to guide victims through the decryption process, cybercriminals create a text file called HELP_DECRYPT_YOUR_FILES.txt to each folder with no longer accessible data. It says the encryption occurred with the use of strong RSA algorithms. Victims are therefore instructed to buy a special decryption key, which costs 980$ and the amount has to be sent to the cybercriminals' crypto address. After doing so, victims have to notify about the completed payment by writing to lock-ransom@protonmail.com (e-mail address provided by the attackers). As an additional measure to incentivize victims into paying the ransom, extortionists propose to decrypt 1 file for free. Victims can do it and receive one file fully unlocked to confirm that decryption actually works. It is unfortunate to say this, but files encrypted by ZareuS Ransomware are almost impossible to decrypt without the help of cybercriminals. It may be only if ransomware is bugged, contains flaws, or other drawbacks alleviating third-party decryption. A better and guaranteed method to get back your data is to recover it using backup copies. If such are available on some non-infected external storage, you can easily substitute your encrypted files with them.

Error code 0x800f020b can be encountered in Windows 11 and Windows 10 operating systems. It occurs when trying to update your system via Windows Update Center. It is usually owners of printers such as HP (Hewlett Packard) or Xerox that are likely to receive the error while installing updates. The reason for that is most likely a disconnected printer, which prevents the installation of necessary components for printing devices. Try to reconnect your printer and see if it helps install the update successfully. If there are some other external devices connected, do the same with them as well. Should the issue remain unsolved, follow the rest of the instructions in our article below. There are 7 more methods that may be able to help. Although it is considered ineffective by many, in-built Windows Troubleshooter abilities can sometimes address issues like the 0x80073712 error. Troubleshooter is a native Windows utility designed to find and remove existing problems in various segments. You can use it to detect update issues and try to fix them eventually.

LokiLok is the name of a ransom infection. Upon successful installation onto a targeted system, it encrypts important files and blackmails victims into paying money for their decryption. We also discovered that LokiLok was developed on the basis of another ransomware virus called Chaos. Once encryption occurs, victims can see their data change with the .LokiLok extension. To illustrate, a file named 1.pdf will most change to 1.pdf.LokiLok and reset its original icon. After this, victims will no longer be able to access their data and ought to seek decryption instructions in the read_me.txt file. The virus also replaces default wallpapers with a new picture. Cybercriminals want victims to buy a special decryption tool. To do this, victims should contact extortionists using the attached e-mail address (tutanota101214@tutanota.com). Prior to buying the necessary software, it is also offered to send 2 small files - cybercriminals promise to decrypt and send them back to prove decryption abilities. In addition, the message also instructs against trying to use external recovery methods since it may lead to irreversible destruction of data. Whatever guarantees are given by ransomware developers, it is always not recommended to trust them. Many fool their victims and do not send the decryption software even after sending them money.

Pay Ransomware is, in other words, a file-encryptor that prevents users from accessing their own data. A recent investigation confirmed that this virus belongs to a group of ransomware developers known as Xorist. Similar to other infections of this type, the virus changes all encrypted files using the .Pay extension. To illustrate, a file named 1.pdf will change to 1.pdf.Pay and reset its original icon as well. After getting things done with encryption, Pay Ransomware displays a pop-up window and creates a text file titled HOW TO DECRYPT FILES.txt. Both of them contain identical information on how to return access to files. It is said that victims can restore access to files by paying 50$ to the Bitcoin address of cybercriminals. After completion, victims will have to contact extortionists via the qTox client and receive their decryption code. There is also a warning that 5 unsuccessful attempts to enter the right code will result in irreversible destruction of data. Following this, swindlers encourage victims to be more careful while doing the above-mentioned. Additionally, it is also said that no third-party software like antivirus will help, but only prevent further decryption of data. Unfortunately, what they outline in their messages can be true - some cybercriminals set up protection against manual attempts to decrypt blocked data. In such a case, the only option, if you are in burning need of restoring your files, is either to pay the required ransom or use your own backup copies from external storage to compensate for the loss.

CryptBIT encrypts system-stored files making them no longer accessible and also demands victims to pay 400EUR for data decryption. Infections operating this way are therefore categorized as ransomware. During encryption, CryptBIT highlights blocked data by adding new extension (.cryptbit). In other words, a file like 1.pdf will change to 1.pdf.cryptbit and reset its original icon as well. The same change will occur with other file types encrypted by ransomware. The virus also changes desktop wallpapers and creates a text file named CryptBIT-restore-files.txt into each encrypted folder. This file instructs victims on how to decrypt their data. The note displays text that all files have been encrypted and uploaded to external servers. It is, therefore, said that victims can recover their data, but have to send 400EUR (in bitcoins) to the attached crypto address. Cybercriminals also ask to include the victim's e-mail address, to which they promise to send the necessary file decryptor. Unfortunately, it is unclear how victims should do it. While performing cryptocurrency transfers, it is often (if not always) impossible to include additional information like e-mail. Thus, such technical misunderstandings already give strong reasons against trusting cybercriminals behind CryptBIT Ransomware. It is also possible that this ransomware is only a pilot version, and cybercriminals will distribute updated ransomware someday in the future. Whatever it is, paying the ransom is always not recommended.

File system error (-805305975) is a recently discovered issue encountered by users while trying to open media files. Photos, music, or videos open through the default Microsoft Photos trigger an error window stating the corresponding issue. While this problem may seem complicated to some users, its resolution is more than doable when proper methods are used. Usually, there are several reasons why it occurs - some of them are incorrect file format, missing/corrupted system elements, hard disk errors, or even direct malfunction of the Microsoft Photos app. Below, you will find a list of all possible solutions. Try each of them until the issue ends up finally resolved. It is also worth noting that the same issue may appear not only in Windows 11, but in Windows 10 as well. Although the instructions below have been made based on Windows 11, the majority of steps are similar, if not identical, on Windows 10 as well.

The most obvious reason why you may be subject to facing the above-written message is that your system fails to verify the d3d12.dll file. DLL files stand for Dynamic Link Library and are very instrumental in maintaining the operation of both inbuilt and third-party Windows applications. When a file like that is missing or damaged, the message above can occur, preventing further access and use of the desired program respectively. In general, DLL errors are commonly encountered by many Windows users and not only in the latest version this article is dedicated to. Similar or even the same error message tends to occur on Windows 10, 8, and 7 only varying in file names that are missing. No matter which one of them you received, the way they are resolved is almost identical. Typically, problems with DLL occur due to the presence of malware, malfunctioned software, registry issues, and other less prominent causes as well. If you are a victim of being unable to open a specific program due to the d3d12.dll problem, follow our guide below to resolve it.