malwarebytes banner


Useful tutorials on various PC troubleshooting topics. Video tutorials.

How to remove Qlkm Ransomware and decrypt .qlkm files

Qlkm Ransomware is a disastrous virus, that uses AES encryption algorithms to encrypt user's files. After encoding files obtain following extensions: .qlkm. 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, Qlkm 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 Qlkm Ransomware was unable to establish a connection with its server, a fixed key (offline key) will be used to encrypt files.

How to remove Mijnal Ransomware and decrypt .mijnal files

Crypto-Locker Mijnal is a ransomware-type infection that encodes personal data with AES+RSA algorithms. The application of such means that the assigned cipher is hard to break using traditional methods. In other words, it makes sure manual decryption does not take place after data is locked. Unfortunately, in most cases, it appears to be impossible indeed, but you should give it a try after reading this text. Alike other infections, Mijnal encrypts your data by changing a file extension to .mijnal. For example, a sample like "1.mp4" will be altered to "1.mp4.mijnal" and reset its original icon. After the encryption process gets to a close, the virus creates a text note called "README_LOCK.txt" that contains redemption instructions. The information presented inside is written in Russian, which means that developers mainly focus on the CIS regions. However, there are some English users that may be affected by it as well. If you are willing to decrypt your data as soon as possible, cybercriminals ask victims to open the attached link via the Tor browser and follow the instructions right there. Then, extortionists will more likely ask you to pay a certain amount in Bitcoin to gain access back to your data. Despite paying the ransom is usually the only method to overcome data encryption, we recommend against meeting any requests as it can be dangerous for your pocket and privacy as well.

How to remove Igal Ransomware and decrypt .igal files

If your files became unavailable, unreadable, and got .igal extensions it means your computer is infected with Igal Ransomware (variation of STOP Ransomware or as it is, sometimes, called DjVu Ransomware). It is a malicious program that belongs to the group of ransomware viruses. This virus can infect almost all modern versions of the operating systems of the Windows family, including Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10. The malware uses a hybrid encryption mode and a long RSA key, which virtually eliminates the possibility of selecting a key for self-decrypting files. Like other similar viruses, the goal of Igal Ransomware is to force users to buy the program and key needed to decrypt files that have been encrypted. The version, that is under research today is almost identical to the previous ones, except for new e-mails used for contacting malefactors and new extensions added.

How to remove Omfl Ransomware and decrypt .omfl files

Omfl 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 300 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 is: .omfl. The ransom note file _readme.txt is presented below in the text box and picture.

How to fix Windows Update error 0x800704c7 in Windows 10

Error 0x800704c7 is a bottleneck emerging on Windows 10. It prevents users from installing the latest updates that come to the system. Whilst the issue may feel irritating and hard to solve, it is usually related to the presence of corrupted or missing files. Such a phenomenon happens when users download third-party software or manipulate settings on their own. Users encountering 0x800704c7 can see the message in Windows Update Center stating the code of the issue. Sometimes failed updates may result in BSOD (Blue Screen of Death) that shuts down and reboots your PC. Even if you do not know what could potentially cause the problem, we will help you figure it out in the article below. A list of step-by-step instructions will help you liberate from the reoccurring problem and install the necessary update eventually.

How to fix Windows Update error 0x80070490 in Windows 10

Error 0x80070490 is a problem stating a failure when trying to update your system. Being unable to keep your PC up-to-date due to such issues turns out to be quite spread around Windows users. Usually, these errors occur as a result of conflicts created by third-party software, lack of important elements, malware, and other things wrecking configuration settings. To solve this, we recommend you to follow the step-by-step guide presented below. A number of tested and efficient methods will help you say goodbye to this problem eventually.