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Tutorials

Useful tutorials on various PC troubleshooting topics. Video tutorials.

How to remove GAZPROM Ransomware and decrypt .GAZPROM files

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GAZPROM is a ransomware infection developed on the basis of another ransomware called CONTI. Similarly to other malware of this type, GAZPROM targets the encryption of personal files and then demands victims to pay a ransom for their decryption. Along with encryption, the virus creates two files containing decryption instructions (GAZPROM_DECRYPT.hta and DECRYPT_GAZPROM.html). Also, the encrypted data gets renamed with the .GAZPROM extension. As a result, restricted files start looking the following way: 1.pdf.GAZPROM, 1.png.GAZPROM, and so forth. To return the locked data, victims are instructed to contact cybercriminals on the Telegram messenger and pay for the decryption of data. Should victims fail to establish communication within the first 24 hours since the encryption, the price is said to increase. Threat actors assure they are capable of returning access to the blocked data and can provide all possible evidence to prove it.

How to remove Zhong Ransomware and decrypt .zhong files

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Zhong is the name of a ransomware infection that runs encryption of system-stored data and then urges victims to pay money for decryption. While restricting access to data, the virus also assigns its own .zhong extension to highlight the encrypted data. Note that this change is purely visual and does not have anything direct with encryption. Unfortunately, simply removing the added extension will not return access to data. In order to do it, victims are encouraged to follow instructions within the Restore.txt text note that gets created after successful encryption. The message from the text note clarifies that victims have 48 hours to contact threat actors via e-mail and pay for decryption. Otherwise, the affected data will be made public on various resources (supposedly dark web ones). By saying this, cybercriminals attempt to intimidate users and basically force them into paying the ransom. While the decryption cost is unknown, various ransomware extortionists can require from hundreds to even thousands of dollars for complete file decryption.

How to remove H3r Ransomware and decrypt .h3r files

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H3r is a ransomware infection designed to render files inaccessible (using encryption) and demand payment for their recovery afterward. In addition to running secure cryptographic encryption, the virus also modifies affected filenames by appending a new extension that consists of the personal victim's identifier, cybercriminals' email address, and .h3r at the very end. For instance, an original file like 1.pdf after encryption will change to something like 1.pdf.id-9ECFA84E.[herozerman@tutanota.com].h3r and become no longer accessible. Following this, the ransomware will display a pop-up window and create the info.txt file, which present decryption guidelines to victims.

How to remove AttackSystem Ransomware and decrypt .attacksystem files

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AttackSystem is a ransomware infection that has file-encrypting capabilities. This means that after getting infected by it victims will be restricted from accessing their own data until a ransom payment is made. In addition, the ransomware also alters the file appearance by adding the .attacksystem extension. For instance, a file previously named 1.pdf will change to something like 1.pdf.attacksystem and become no longer usable. Information on how to return the blocked data provided by swindlers in the How_to_back_files.html file that gets created after encryption. It is also worth noting that AttackSystem Ransomware has been discovered to belong to another malware family known as MedusaLocker.

How to fix Zoom error code 10004 on Windows 11

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Some users can be presented with error code 10004 while launching, installing the Zoom app, or even trying to attend a call session. This problem is known to occur when Zoom fails to establish a proper connection with its servers and perform an automatic update. The most common causes for this are usually unstable internet connection, interference by third-party software, temporary issues on Zoom servers, corrupted Zoom files, and even blockage by Windows Defender Firewall (or third-party firewall). By following our guide below, you will be able to approach this error step-by-step and resolve it with one of the methods eventually. Please note that our instructions are initially based on Windows 11, however, most of them look almost identical on earlier Windows versions as well.

How to remove Saba Ransomware and decrypt .saba files

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Saba is a ransomware program belonging to the STOP/Djvu malware family. Alike previous ransomware versions released by this family, Saba encrypts personal data and demands victims to pay a ransom for its return. During this process, the virus modifies all restricted files using the .saba extension. For instance, a file named 1.pdf will change to 1.pdf.saba and reset its original icon. Following this, Saba Ransomware creates a text note (_readme.txt) containing instructions on how to recover the files. As said in the note, victims should contact ransomware developers via e-mail communication (support@freshmail.top or datarestorehelp@airmail.cc) and pay 980 dollars for special decryption software. Cybercriminals also offer a 50% discount off the mentioned price if victims write a message to swindlers within 72 hours. In addition to this, infected users are also allowed to send 1 encrypted file to get it unlocked and fully working for free. Whether it is possible to decrypt your data without paying the ransom depends on how it was encrypted. Developers from the STOP family may use both offline and online ways of generating and storing assigned ciphers.

How to fix Roblox error code 264 on Windows 11

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Error code 264 is a pretty widespread issue that some players tend to experience while trying to launch Roblox on Windows 11 or earlier Windows editions. Here are the two most common messages that users often see on their screens: "Same account launched game from different device. Reconnect if you prefer to use this device. (Error Code: 264)." or "You are already playing a game. Please shut down the other game and try again (Error Code: 264).". As a rule, this error appears when players are logged into their Roblox account on multiple devices. To solve this problem, it is frequently enough to simply log out of your Roblox account on another device. In addition, poor network connection, corrupted cache, and even outdated Roblox versions could be the cause of the problem as well. Below we will show you a couple of methods that, with high probability, will fix the error. Try each presented solution until one of them eventually resolves the error code 264 and lets you play Roblox again.

How to remove Sato Ransomware and decrypt .sato files

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Sato Ransomware is a computer virus-extortioner, with a global impact, that belongs to the largest family of STOP/Djvu Ransomware. It was developed by cyber-racketeers to blackmail users worldwide. Malware blocks access to users' documents, photos, databases, music, mail, archives by encrypting them with an AES encryption algorithm and demands ransom: from $490 to $980 in Bitcoins. The modification of the virus, that we are investigating now adds .sato extensions to affected files and has many other characteristic signs. It appeared in the end of April - beginning of May. For example, all latest versions of STOP Ransomware use _readme.txt ransom note file with typical message. The particular version, under research today, uses the following e-mail addresses: support@freshmail.top and datarestorehelp@airmail.cc.