Qotr – Ransomware
Qotr is a harmful software working as common ransomware. Michael Gillespie, the well-known virus researcher, first discovered this new name in the DJVU ransomware family.
Qotr was created for the sole function to encrypt all popular file types. Rationally, as quickly as the file encryption is effectively achieved, the users are not able to get access to them. Qotr virus adds its own “.qotr” to all the encrypted data. For instance, the file “price_list.xls”, once crypted by Qotr, will be entitled as “price_list.xls.qotr”. As soon as the file encryption is accomplished, Qotr puts its own unique text document (_readme.txt) into all the folders that save the encrypted files.
The message mentioned by text file asking for the random os really comparable to the alerts provided by other ransomware hazards belonging to the DJVU family. The warning essentially indicates that the files have been secured and the only solution to get access to it is to use a special standalone key. Regretfully, this declaration is definitely true.
The method to encrypt the files used by Qotr is not totally looked into. Nevertheless, there is no doubt that each computer owner may be released a special decryption key, which is definitely unique. It is extremely tough to recuperate the data without the proper type in place.
“Don’t worry, you can return all your files!”, from _readme.txt message:
One more peculiarity of the Qotr infection is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the complete control by the scoundrels who have released the Qotr ransomware into the web. In order to acquire the key and bring back the important data, the users are told to connect with the frauds through email or by telegram and to pay the ransom in the quantity of $980.
The message also says that the people should call the Qotr authors within 72 hours upon the minute of the data file encryption. The alert indicates that by doing so the people will acquire a 50% discount, for that reason, the ransom quantity falls to $490.
Qotr crypted your data, however, it might not be the only hazard on your computer. Plus, the ransomware might be concealed deep in the system. To find and erase the danger totally, we suggest you to refer to the aid of GridinSoft Anti-Malware app.
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No matter what the quantity of the ransom is, we highly recommend that you do not pay the ransom. There is no assurance that these online crooks will keep their promises, so they might not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. Thus, paying ransom frequently does not lead to a successful healing. So, the users may merely lose their money for nothing.
Similarly, we advise you not to get in touch with the frauds as they instruct. Do not move cash into their wallets. There are no applications that could break the Qotr ransomware or restore the data at no charge. Therefore, the only proper choice is to bring back the data from possible backups (if readily available).
Virus Summary
| Name | Qotr Ransomware |
| File Extension | qotr |
| Type | Ransomware |
| Family | DJVU |
| Short Description | The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files. |
| Symptoms | File encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .qotr extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Qotr Removal Tool | GridinSoft Anti-Malware |
| Qotr Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now full of infections similar to the Qotr virus. For example, this specific risk is essentially identical to Brusaf and other ransomware-type infections. These damaging utilities have been developed in order to encrypt the essential information and express the need for the users to pay the ransom. All these infections utilize the identical algorithm to create the particular key for successful data decryption.
Unless the Qotr ransomware is still under the development process or has actually got some concealed bugs, it is not possible to bring back the data manually. Hence, the only working solution to prevent the loss of your important information is to regularly maintain up-to-date backups of all your essential files.
Another crucial piece of suggestions is to save the backups on unique storage not linked to your primary device. For example, you may store it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is really dangerous, since the backup might also be encrypted by the Qotr ransomware.
Leakages for the Qotr ransomware attack.
Qotr utilizes numerous paths to infiltrate the susceptible computer systems. It is not particular what particular method was utilized in your case, nevertheless, the invasion may happen through the following channels:
- bundling with third-party programs, primarily freeware;
- spam e-mails from the unknown senders;
- sites offering complimentary hosting;
- P2P (peer-to-peer) torrent software.
There are times when the Qotr may camouflage itself as some authentic application, for example, through the misleading notifies requiring setup of some software application upgrade. This is the most typical technique utilized by the frauds to inject the Qotr infection files into the system. This way users partially take part in its setup, without clearly comprehending the threat.
In addition, the frauds may send unsolicited spam email with challenging signals motivating individuals to open suspicious accessories or click some download links, for example, those encouraging the people to open particular photos, text files, tax files and other information.
No doubt, opening these files or clicking on the harmful links might basically damage the system. Fake Acrobat Reader upgrade alerts may result in the Qotr ransomware infiltration. Likewise, downloading the split software application may furthermore include the ransomware installer. The last however not the least, installation of Qotr may happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct permission or even permission.
Preventing the Qotr ransomware injection.
Obviously, there is no absolute assurance that your computer system will be always devoid of any malware attacks, nevertheless, we wish to share some useful tips with you to make it much safer. Ensure to pay really close attention while browsing the web and especially while getting cost-free programs. Do not open any dubious e-mail accessories, specifically if the sender is not understood to you.
Do not forget that specific freeware installer might also consist of some other extra apps in the package. These additional applications might be extremely damaging. It is of utmost importance to keep your anti-virus software and your operating system in basic to be constantly properly updated.
It is quite sensible that downloading pirated programs is illegal, however, furthermore, such unauthorized software application usage might also bring severe damage to your system. Thus, do not download any cracked programs. Plus, the fact that your present anti-virus did not secure the system from the Qotr ransomware is an excellent factor for you to reconsider your choices and change to another program that can render the securing functions on a better level.
Below please find the quotation from the Qotr text file:
ATTENTION! Don't worry, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-2P5WrE5b9f Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: restorealldata@firemail.cc Reserve e-mail address to contact us: gorentos@bitmessage.ch Our Telegram account: @datarestore
Screenshot of files with “.qotr” extension added by the virus:”
Use GridinSoft Anti-Malware to remove Qotr ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
2. Double-click on the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
4. Wait for the GridinSoft Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
5. Click on “Clean Now”.
When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
Use Emsisoft Decryptor for restore qotr files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
- Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
- After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
- The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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