Lper – Ransomware
Lper is a destructive software working as typical ransomware. Michael Gillespie, the widely known malware researcher, very first found this new name in the DJVU ransomware family.
Lper was developed for the sole purpose to encrypt all popular file types. Realistically, as quickly as the file encryption is successfully accomplished, the users are not able to get access to them. Lper ransomware includes its own “.lper” to all the encrypted data. For example, the file “price_list.xls”, once modified by Lper, will be titled as “price_list.xls.lper”. When the file encryption is achieved, Lper puts its own distinct text document (_readme.txt) into all the folders that keep the encrypted files.
The alert mentioned by _readme.txt requesting the random os really comparable to the alerts given by other ransomware risks coming from the DJVU family. The caution basically shows that the data has been encrypted and the only option to get access to it is to use a distinct standalone key. Regretfully, this statement is absolutely true.
The technique to secure the files used by Lper is not totally looked into. Nevertheless, there is no doubt that each computer system owner might be released an unique decryption key, which is definitely unique. It is incredibly tough to recuperate the information without the proper key in location.
“Don’t worry, you can return all your files!”, from _readme.txt message:
One more peculiarity of the Lper virus is that the users are not able to get access to the key. The decrypting key is hosted on a special server under the complete control by the criminals who have introduced the Lper ransomware into the web. In order to acquire the key and restore the important data, the users are informed to contact the frauds via email or by telegram and to pay the ransom in the amount of $980.
The message likewise states that the people need to contact the Lper authors within 72 hours upon the moment of the information file encryption. The alert suggests that by doing so individuals will acquire a 50% discount rate, therefore, the ransom quantity falls to $490.
Lper encrypted your information, however, it might not be the only threat on your computer. Plus, the ransomware might be hidden deep in the system. To discover and delete the threat completely, we suggest you to refer to the assistance of GridinSoft Anti-Malware app.
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No matter what the amount of the ransom is, we strongly encourage that you do not pay the ransom. There is no assurance that these online scoundrels will keep their promises, so they may not care at all what the victims feel about the encryption, even when the quantity of the ransom is received into their accounts. Thus, paying ransom often does not result in a successful healing. So, the users may simply lose their money for absolutely nothing.
Similarly, we advise you not to call the scams as they instruct. Do not transfer loan into their wallets. There are no applications that could break the Lper ransomware or bring back the data at no charge. Therefore, the only proper decision is to restore the data from possible backups (if offered).
Virus Summary
| Name | Lper Ransomware |
| File Extension | lper |
| 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 .lper extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Lper Removal Tool | GridinSoft Anti-Malware |
| Lper Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Web is now filled with infections comparable to the Lper virus. For example, this particular threat is essentially similar to Brusaf and other ransomware-type infections. These damaging utilities have been established in order to encrypt the important data and express the need for the users to pay the ransom. All these infections use the identical algorithm to generate the specific key for successful data decryption.
Unless the Lper ransomware is still under the development process or has actually got some concealed bugs, it is not possible to bring back the information by hand. Hence, the only working solution to avoid the loss of your crucial data is to regularly preserve current backups of all your crucial files.
Another essential piece of suggestions is to save the backups on unique storage not connected to your primary PC. For example, you might keep it on the USB Flash Drive, or some external hard disk, or by using the cloud data storage services. Keeping the backups on your regular drive is really risky, given that the backup may also be secured by the Lper infection.
Leaks for the Lper ransomware attack.
Lper utilizes many paths to infiltrate the vulnerable computer systems. It is not particular what specific technique was utilized in your case, nevertheless, the invasion may happen through the following channels:
- bundling with third-party programs, mainly freeware;
- spam e-mails from the unidentified senders;
- sites providing free hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Lper may camouflage itself as some real application, for example, through the misleading signals requiring installation of some software application update. This is the most common trick used by the scams to inject the Lper virus files into the system. By doing this users partially take part in its setup, without clearly understanding the danger.
Moreover, the scams might send unsolicited spam e-mail with tricky informs encouraging individuals to open suspicious accessories or click some download links, for instance, those encouraging individuals to open certain photos, text files, tax files and other info.
No doubt, opening these files or clicking the malicious links may essentially harm the system. Fake Media Player upgrade notices may result in the Lper ransomware infiltration. Likewise, downloading the cracked software might in addition consist of the ransomware installer. The last however not the least, installation of Lper may happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct approval and even approval.
Avoiding the Lper virus injection.
Naturally, there is no absolute warranty that your computer will be always devoid of any malware attacks, nevertheless, we want to share some useful tips with you to make it more secure. Ensure to pay very close attention while browsing the web and especially while getting cost-free programs. Do not open any suspicious e-mail attachments, particularly if the sender is not understood to you.
Do not forget that particular freeware installer may likewise contain some other additional apps in the bundle. These extra applications might be really destructive. It is of utmost significance to keep your anti-virus software application and your operating system in basic to be always properly upgraded.
It is rather sensible that downloading pirated software is prohibited, nevertheless, in addition, such unapproved programs usage might likewise bring serious damage to your computer. Hence, do not download any split programs. Plus, the fact that your current anti-virus did not protect the system from the Lper ransomware is a great reason for you to reconsider your options and switch to another program that can render the securing functions on a far better level.
Below please find the quotation from the Lper 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 “.lper” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Lper 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 lper 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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