Djvu VirusRansomwareRemoval Guide

Ofww Virus Removal Guide (+Decrypt .ofww files)

Ofww – Ransomware

Ofww is a malicious software functioning as typical ransomware. Michael Gillespie, the well-known malware researcher, first found this new name in the DJVU ransomware family.

Ofww was created for the sole function to encrypt all popular file types. Logically, as soon as the file encryption is effectively achieved, the users are unable to get access to them. Ofww ransomware adds its own “.ofww” to all the encrypted data. For example, the file “price_list.xls”, as soon as modified by Ofww, will be titled as “price_list.xls.ofww”. When the file encryption is achieved, Ofww puts its own unique text document (_readme.txt) into all the folders that save the encrypted files.

The message specified by text file asking for the random os extremely comparable to the notifications given by other ransomware threats belonging to the DJVU family. The warning basically indicates that the data has been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this statement is definitely real.

The method to secure the files utilized by Ofww is not completely researched. Nevertheless, there is no doubt that each computer system owner might be issued an unique decryption key, which is absolutely unique. It is extremely tough to recover the information without the appropriate key in location.

“Don’t worry, you can return all your files!”, from text file message:

message from Ofww virus

One more peculiarity of the Ofww virus is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the complete control by the crooks who have introduced the Ofww virus into the world wide web. In order to acquire the key and restore the crucial information, the users are told to contact the frauds by means of email or by telegram and to pay the ransom in the quantity of $980.

The message likewise says that the people need to get in touch with the Ofww authors within 72 hours upon the minute of the information encryption. The alert suggests that by doing so the people will acquire a 50% discount, therefore, the ransom amount drops down to $490.

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 criminals will keep their promises, so they may not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. For this reason, paying ransom typically does not lead to an effective healing. So, the users may just lose their money for absolutely nothing.

Similarly, we urge you not to get in touch with the scams as they instruct. Do not move cash into their wallets. There are no applications that could split the Ofww ransomware or bring back the data at no cost. For that reason, the only right decision is to restore the data from possible backups (if offered).

Virus Summary

NameOfww Ransomware
File Extensionofww
Short DescriptionThe 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.
SymptomsFile 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 .ofww extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Ofww Removal Tool   GridinSoft Anti-Malware
Ofww Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now loaded with infections comparable to the Ofww virus. For instance, this specific danger is basically identical to Brusaf and other ransomware-type infections. These damaging utilities have actually been developed in order to secure the important data and express the demand for the users to pay the ransom. All these infections utilize the identical algorithm to produce the particular key for effective data decryption.

Unless the Ofww ransomware is still under the advancement process or has actually got some hidden bugs, it is not possible to restore the information manually. Hence, the only working option to prevent the loss of your crucial information is to frequently preserve updated backups of all your essential files.

Another crucial piece of recommendations is to save the backups on special storage not connected to your primary PC. For instance, you may save it on the USB Flash Drive, or some external hard disk, or by using the cloud data storage services. Keeping the backups on your system drive is extremely dangerous, given that the backup might likewise be encrypted by the Ofww virus.

Leakages for the Ofww ransomware attack.

Ofww utilizes numerous courses to penetrate the susceptible computers. It is not particular what particular approach was used in your case, however, the invasion may happen by means of the following channels:

  • bundling with third-party programs, generally free apps;
  • spam emails from the unknown senders;
  • websites supplying complimentary hosting;
  • P2P (peer-to-peer) torrent software.

There are times when the Ofww virus may camouflage itself as some real application, for instance, through the deceptive alerts requiring installation of some software application upgrade. This is the most common technique used by the scams to inject the Ofww infection files into the system. In this manner users partly participate in its installation, without clearly comprehending the threat.

Additionally, the frauds may send out unsolicited spam e-mail with tricky notifies motivating the people to open suspicious accessories or click some download links, for instance, those encouraging individuals to open specific 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 alerts may lead to the Ofww ransomware infiltration. Similarly, downloading the split software application might in addition include the ransomware installer. The last but not the least, installation of Ofww may happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct permission and even permission.

Preventing the Ofww ransom virus attack.

Of course, there is no absolute guarantee that your computer system will be constantly devoid of any malware attacks, nevertheless, we want to share some helpful pointers with you to make it more secure. Make certain to pay very close attention while browsing the web and particularly while downloading cost-free programs. Do not open any suspicious email attachments, particularly if the sender is not understood to you.

Do not forget that particular freeware installer might likewise consist of some other extra apps in the bundle. These extra applications may be very destructive. It is of utmost importance to keep your anti-virus software and your os in general to be constantly correctly updated.

It is quite sensible that downloading cracked programs is illegal, nevertheless, additionally, such unauthorized programs usage might also bring severe damage to your system. Thus, do not download any broken programs. Plus, the reality that your current anti-virus did not safeguard the system from the Ofww ransomware is a great factor for you to reassess 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 Ofww text file:


 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:
 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:

 Reserve e-mail address to contact us:

 Our Telegram account:

Screenshot of files with “.ofww” extension added by the virus:”

Ofww Ransomware - encrypt files with .ofww extension

Use GridinSoft Anti-Malware to remove Ofww ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

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.
GridinSoft Anti-Malware
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.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

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.
GridinSoft Anti-Malware Scan

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.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore ofww files

You can download Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. 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.
  4. 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.
  5. 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
  6. 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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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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One Comment

  1. hello,
    what is the next step when the files are not decrypted and only giving me the message below?
    File: C:\Users\User\Documents\KATETE LAP edited\Katete socio-economic and detail picking DATA COLLECTION final.pdf.ofww
    Error: No key for New Variant offline ID: xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
    Notice: this ID appears be an offline ID, decryption MAY be possible in the future

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