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Useful tutorials on various PC troubleshooting topics. Video tutorials.

How to remove BlackSuit Ransomware and decrypt .blacksuit files

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BlackSuit is a ransomware-type virus that targets the encryption of data on both Windows and Linux operating systems. Victims of this infection will be restricted from accessing their files until the ransom is paid. To do so, victims are encouraged to read decryption instructions presented within the README.BlackSuit.txt text note. In addition, the virus also highlights the blocked data by adding the new .blacksuit extension to them. To illustrate, a file like 1.pdf will change to 1.pdf.blacksuit, reset its original icon, and simultaneously become no longer accessible. The README.BlackSuit.txt file claims victims were attacked by an extortioner who alleges to have encrypted and uploaded crucial files onto a protected server. It is said that data like financial records, confidential information, personal files, and other sensitive materials are now at risk of getting leaked to the web unless victims obey the attackers' demands. The extortionist says it is possible to avoid all negative implications and restore access to data for some amount of money. To get in touch with the attackers, victims are urged to use the provided TOR browser link and further collaborate with the swindlers.

How to remove FluHorse Malware (Android)

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FluHorse is a recently-discovered malware that targets Android devices across the Eastern Asia region. The virus itself is known to sit inside fake apps disguised as legitimate ones. After getting installed, the malicious app will try to trick users into providing their login credentials. Such information is of great value for cybercriminals as they can further abuse it for accessing various accounts (finance-related, social media, etc.) and performing fraudulent actions. The developers of FluHorse created the malware using an open-source framework and Google's Flutter software development kit, which makes it easy to build cross-platform applications with a custom virtual machine and a wide range of supported platforms. FluHorse is particularly dangerous because it can remain undetected and perform its malicious actions without causing suspicion to users for long periods of time. By mimicking legitimate apps from reputable companies, the attackers can trick users into downloading them and willingly entering their sensitive information. This way, threat actors seek to hijack login credentials and then misuse them for signing into genuine apps. On top of this, FluHorse can read all incoming SMS messages and 2FA (two-factor authentication) codes and use them for bypassing additional security measures while attempting to access the needed account. For instance, many accounts are protected by additional SMS confirmation where a code from SMS is required to complete the login. By having access to the infected device, FluHorse can easily send the received SMS code to the attackers and let them access the account eventually. Thus, apps that incorporate this malware pose a serious threat to users and therefore must be removed from the device immediately. Do not delay and follow our guide below to do it effectively and without residual traces.

How to remove Qopz Ransomware and decrypt .qopz files

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Qopz Ransomware is a high-risk file-encrypting computer virus, that belongs to notorious family of STOP/Djvu. This particular virus was released during the first days of May 2023. Here are some of its characteristics: it modifies files' extensions with 4-letter code .qopz; it encrypts those files with strong combination of AES-256 and RSA-1024 cryptography; it creates ransom note _readme.txt, where authors demand $980/$490 ransom for decryption. Unfortunately, full decryption is not possible if the virus used online key (your PC was online during the whole process of encryption). But do not despair, there are still chances to restore data partially or even completely with instructions provided on this page and certain portion of luck. The hackers offer to decrypt 1 file for free, and we recommend not to miss this opportunity. Although, they say file must not contain important information, send them 1 crucial file, most important document or memorable photo. However, that should be all communication with them. Do not pay the ransom, because, in most cases, malefactors just stop responding.

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.