Znsm – Ransomware
Znsm is a destructive software functioning as typical ransomware. Michael Gillespie, the well-known malware researcher, very first found this new name in the DJVU ransomware family.
Znsm was created for the sole function to encrypt all popular file types. Realistically, as soon as the file encryption is effectively accomplished, the users are not able to get access to them. Znsm ransomware adds its own “.znsm” to all the encrypted data. For example, the file “price_list.xls”, when crypted by Znsm, will be entitled as “price_list.xls.znsm”. Once the file encryption is accomplished, Znsm puts its own distinct text file (_readme.txt) into all the folders that keep the encrypted files.
The message mentioned by _readme.txt asking for the random os very similar to the notices given by other ransomware threats coming from the DJVU family. The caution basically shows that the data has been encrypted and the only service to get access to it is to use a distinct standalone key. Regretfully, this declaration is definitely real.
The technique to encrypt the files used by Znsm is not totally looked into. However, there is no doubt that each computer owner may be issued a special decryption key, which is absolutely unique. It is exceptionally tough to recuperate the information without the proper key in place.
“Don’t worry, you can return all your files!”, from _readme.txt message:
One more peculiarity of the Znsm infection is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the total control by the criminals who have actually released the Znsm virus into the world wide web. In order to acquire the key and restore the important information, the users are informed to connect with the scams via email or by telegram and to pay the ransom in the amount of $980.
The message also states that the people need to get in touch with the Znsm authors within 72 hours upon the minute of the data file encryption. The alert suggests that by doing so the people will obtain a 50% discount rate, therefore, the ransom amount falls to $490.
Znsm modified your files, however, it might not be the only risk on your PC. Plus, the ransomware may be concealed deep in the system. To detect and erase the hazard completely, we recommend you to describe the help of GridinSoft Anti-Malware .
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No matter what the quantity of the ransom is, we highly advise that you do not pay the ransom. There is no assurance that these online crooks will keep their guarantees, so they may not care at all what the victims feel about the encryption, even when the amount of the ransom is gotten into their accounts. Hence, paying ransom typically does not lead to an effective healing. So, the users might just lose their money for absolutely nothing.
Likewise, we prompt you not to call the frauds as they instruct. Do not transfer money into their wallets. There are no applications that could crack the Znsm ransomware or bring back the information at no charge. For that reason, the only appropriate decision is to restore the information from possible backups (if readily available).
Virus Summary
| Name | Znsm Ransomware |
| File Extension | znsm |
| 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 .znsm extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Znsm Removal Tool | GridinSoft Anti-Malware |
| Znsm Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now full of infections comparable to the Znsm ransomware. For instance, this specific danger is essentially identical to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to encrypt the essential data and express the need for the users to pay the ransom. All these infections utilize the identical algorithm to create the specific key for effective data decryption.
Unless the Znsm ransomware is still under the advancement procedure or has actually got some concealed bugs, it is not possible to bring back the data by hand. Therefore, the only working solution to prevent the loss of your essential data is to regularly preserve up-to-date backups of all your crucial documents.
Another crucial piece of advice is to keep the backups on special storage not connected to your primary computer. For example, you might save 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 regular drive is extremely dangerous, since the backup may also be secured by the Znsm .
Leaks for the Znsm ransomware attack.
Znsm utilizes lots of paths to penetrate the vulnerable computers. It is not certain what specific approach was utilized in your case, however, the invasion might happen by means of the following channels:
- bundling with third-party programs, primarily free software;
- spam emails from the unknown senders;
- sites providing free hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Znsm virus may camouflage itself as some genuine application, for instance, through the deceptive notifies demanding installation of some software application upgrade. This is the most common trick utilized by the scams to inject the Znsm ransomware files into the system. By doing this users partially participate in its installation, without clearly understanding the danger.
Additionally, the frauds might send unsolicited spam email with challenging alerts motivating individuals to open dubious attachments or click on some download links, for instance, those encouraging individuals to open certain photos, text files, tax documents and other information.
No doubt, opening these files or clicking the malicious links might basically damage the system. Fake Adobe Flash Player upgrade notices may lead to the Znsm ransomware infiltration. Likewise, downloading the cracked software application might additionally consist of the ransomware installer. The last but not the least, setup of Znsm might take place through some Trojan horses that may be set up stealthily into the system and without the user’s direct approval and even consent.
Avoiding the Znsm ransom virus injection.
Naturally, there is no absolute assurance that your computer will be constantly without any malware attacks, nevertheless, we would like to share some beneficial suggestions with you to make it more secure. Make certain to pay extremely close attention while searching the web and especially while getting cost-free programs. Do not open any suspicious e-mail attachments, especially if the sender is not known to you.
Do not forget that particular freeware installer may likewise include some other additional apps in the package. These additional applications might be very damaging. It is of utmost value to keep your anti-virus software application and your os in general to be always effectively updated.
It is quite rational that downloading cracked software is illegal, however, furthermore, such unapproved programs use might also bring severe damage to your system. Thus, do not download any cracked programs. Plus, the reality that your present anti-virus did not safeguard the system from the Znsm ransomware is a good factor for you to reconsider your choices and switch to another program that can render the securing functions on a much better level.
Below please find the quotation from the Znsm 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 “.znsm” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Znsm 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 znsm 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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