Oopu Virus – Details
Oopu is a destructive software functioning as common ransomware. Michael Gillespie, the popular virus researcher, first discovered this new name in the DJVU ransomware family.
Oopu was developed for the sole purpose to encrypt all popular file types. Logically, as soon as the encryption is effectively achieved, the users are not able to get access to them. Oopu virus adds its own “.oopu” to all the encrypted data. For instance, the file “price_list.xls”, once crypted by Oopu, will be entitled as “price_list.xls.oopu”. Once the file encryption is accomplished, Oopu puts its own unique text file (_readme.txt) into all the folders that store the encrypted files.
The message mentioned by _readme.txt requesting for the random os extremely similar to the alerts given by other ransomware hazards belonging to the DJVU family. The warning generally 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 statement is absolutely true.
The method to encrypt the files utilized by Oopu is not totally looked into. However, there is no doubt that each computer system owner might be issued a special decryption key, which is absolutely special. It is exceptionally tough to recover the information without the proper key in place.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Oopu ransomware 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 crooks who have actually released the Oopu virus into the world wide web. In order to acquire the key and bring back the crucial information, the users are told to contact the scams by means of email or by telegram and to pay the ransom in the amount of $980.
The message also states that individuals need to get in touch with the Oopu authors within 72 hours upon the minute of the data encryption. The alert suggests that by doing so individuals will obtain a 50% discount rate, for that reason, the ransom quantity falls to $490.
Oopu crypted your files, nevertheless, it might not be the only threat on your computer. Plus, the ransomware might be hidden deep in the system. To detect and erase the risk entirely, 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 recommend that you do not pay the ransom. There is no assurance that these online criminals will keep their guarantees, so they might not care at all what the victims feel about the encryption, even when the amount of the ransom is received into their accounts. Hence, paying ransom frequently does not lead to an effective healing. So, the users may merely lose their money for nothing.
Likewise, we prompt you not to call the scams as they instruct. Do not move cash into their wallets. There are no applications that could split the Oopu ransomware or restore the information for free. Therefore, the only proper decision is to restore the information from possible backups (if available).
Virus Summary
| Name | Oopu Ransomware |
| File Extension | oopu |
| 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 .oopu extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Oopu Removal Tool | GridinSoft Anti-Malware |
| Oopu Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Web is now filled with infections comparable to the Oopu virus. For example, this particular risk is generally similar to Brusaf and other ransomware-type infections. These harmful utilities have actually been established in order to secure the important information and express the demand for the users to pay the ransom. All these infections use the similar algorithm to produce the particular key for successful files decryption.
Unless the Oopu ransomware is still under the advancement process or has got some hidden bugs, it is not possible to bring back the information manually. Therefore, the only working service to prevent the loss of your essential information is to regularly keep updated backups of all your essential files.
Another important piece of guidance is to keep the backups on special storage not connected to your primary PC. For instance, 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 routine drive is extremely risky, since the backup may likewise be encrypted by the Oopu ransomware.
Leaks for the Oopu ransomware attack.
Oopu uses numerous paths to infiltrate the vulnerable computer systems. It is not certain what specific technique was utilized in your case, nevertheless, the intrusion might happen by means of the following channels:
- bundling with third-party programs, generally free apps;
- spam e-mails from the unidentified senders;
- sites offering complimentary hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Oopu virus might camouflage itself as some real application, for example, through the misleading informs demanding setup of some software upgrade. This is the most typical trick used by the frauds to inject the Oopu infection files into the system. This way users partially participate in its installation, without clearly comprehending the threat.
Furthermore, the frauds may send unsolicited spam e-mail with challenging signals motivating individuals to open suspicious accessories or click on some download links, for instance, those motivating individuals to open specific images, text files, tax documents and other info.
No doubt, opening these files or clicking on the destructive links may essentially damage the system. Fake Adobe Flash Player update notifications may lead to the Oopu ransomware infiltration. Likewise, downloading the cracked software might furthermore consist of the ransomware installer. The last however not the least, installation of Oopu might happen through some Trojan horses that may be set up stealthily into the system and without the user’s direct authorization or perhaps permission.
Preventing the Oopu ransomware injection.
Naturally, there is no absolute guarantee that your computer system will be constantly devoid of any malware attacks, however, we would like to share some helpful pointers with you to make it safer. Make sure to pay very close attention while browsing the web and particularly while downloading cost-free programs. Do not open any suspicious e-mail accessories, particularly if the sender is not understood to you.
Do not forget that certain freeware installer may also include some other extra apps in the package. These additional applications might be very destructive. It is of utmost value to keep your anti-virus software application and your operating system in basic to be constantly appropriately upgraded.
It is quite rational that downloading cracked apps is unlawful, nevertheless, furthermore, such unauthorized software usage might also bring serious damage to your system. Thus, do not download any cracked programs. Plus, the truth that your existing anti-virus did not secure the system from the Oopu ransomware is an excellent reason for you to reevaluate your options and switch to another program that can render the safeguarding functions on a better level.
Below please find the quotation from the Oopu 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 “.oopu” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Oopu ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can get 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 oopu files
You can get 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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