Ransomware

Ooii File Virus Removal [+Decrypt .ooii files]

Ooii is a File encrypting malware that belongs to STOP/DJVU Ransomware family. It encrypts all your files (photos, databases, documents, backups, etc.) and adds the “.ooii” extension to file names. After encryption, a ransom note “_readme.txt” is also dropped in all infected folders.

ooii File Virus

For example, if a file name “myphoto.jpg” gets encoded, then it will change into “myphoto.jpg.ooii”. It is an encrypted file that you cannot open without a decryption code. Attackers are demanding a whopping $980 USD ransom fee to provide decryption software.

.Ooii File Virus forces its victims to pay ransom money to buy decryption keys. The ransom note contains instructions for the payment of ransom money through Bitcoin. Cybercriminals behind this virus want you to pay money to use your own files. This guide can help you remove this ransomware and recover your files.

SpyHunter 5 Anti-Malware

Threats like Ooii Virus keep getting back on PC if all associated files are not removed. You should use a powerful Malware Removal Tool to run a thorough scan of your PC and delete all threats at once.

Special Offer SpyHunter 5 Anti-Malware offers a 7-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter 5 Review, and Free SpyHunter Remover details.
Compatible with: Windows XP/Vista/7/8/10/11 (32-bit and 64-bit)

What is Ooii Ransomware

Ooii File virus is actually a strain of STOP/Djvu ransomware virus. Cybercriminals who created this malware keep releasing new variants at regular intervals to avoid breaking their codes. Every time a new variant is launched, the decryption codes get changed. So the chances of creating any Universal decryptor which works for all variants are none.

STOP/DJVU Ransomware

Most of the victims of Ooii virus reported that their computer got infected after browsing untrustworthy sites like torrents in search of pirated programs. Cracked software usually contains some types of Trojan spoof the license key authentication process. These Trojans can be easily used to distribute malware like .Ooii file virus. Users normally download such filthy programs on their own and also stop their antivirus protection to install them.

Once installed, this Ooii virus instantly starts the encryption process and targets important files, like videos, images, documents, audio, and etc. This virus soon takes full control of the victim’s computer and all the personal files, then it leaves the ransom note with instructions for paying the extortion fees.

Ooii ransomware is a STOP/DJVU variant

Ooii is a recently detected ransomware-type malware infection that encrypts files on the victim’s computer. This nasty file-encrypting virus belongs to the notorious STOP/DJVU Ransomware family. It is set to corrupt files on the system which it has infected. It uses a powerful encryption algorithm to encode users’ files and after people cannot access their data. Encrypted files are marked with the “.Ooii” file extension which is its name. File locked by this malware has a custom decryption key which is needed to unlock the data. Creators of .Ooii File Virus demand ransom money to give that key and restore files upon payment.

Ransom Note left by Stop/Djvu Virus

Once this .Ooii virus encrypts your files, from that moment forward you can no longer access any of your data. A ransom note named “_Readme.txt” will be placed on your computer (almost in every folder) to remind you of encryption and demand ransom money. This note contains a text message in which hackers ask users to contact by writing on manager@mailtemp.ch or helprestoremanager@airmail.cc email addresses. They also ask users to pay a hefty ransom amount of $480 to $980 USD in Bitcoins for the decryption tool.

Warning: Do not pay the ransom to the attackers, you may get cheated. Try the suggested malware removal and file recovery methods first explained in the tutorial.

What this Ooii virus Do to your files

As we told you, Ooii is file-encrypting malware and it uses very advanced RSA and AES encryption algorithms to lock files of infected PC. If you don’t know what encryption is, then you should understand that is a type of protection for digital files. Your data can be locked by a using unique private decryption key generated by the computer. There is no way to duplicate that key and thus it is simply not possible to unlock files without knowing the key.

Ransomware viruses like Ooii use this technique to lock files on infected computers. After successful encryption, victims have no option other than to pay ransom money to get files back. So this is the method used by cybercriminals to blackmail innocent users and force them into paying hefty ransom money.

Contents of the “_Readme.txt” ransom note left behind

Ooii Ransomware leaves the ransom note “_readme.txt” in all compromised folders. The note explains to victims that all their photos, databases, documents, and other important files are locked. It also stated that they can restore their files for a certain price.

Creators of this virus also offer free decryption of 1 file as proof that they can restore all the files to the previous version. They have set a price for the decryption key of $490 USB in Bitcoins if users contact them and pay the ransom within 72 hours. If not the price is likely to get doubled which is $980 USD. Contacts details of hackers are also provided in the ransom note.

Ransom note “_readme.txt” contains the following text message :

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:
hxxps://we.tl/t-Oc0xgfzC7q
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:
manager@mailtemp.ch

Reserve e-mail address to contact us:
helprestoremanager@airmail.cc

Your personal ID:

Do Not pay Ransom money to hackers

As many security experts advise, you should not pay any money to cybercriminals. The main motive of hackers is to make an illegal profit and they might never give you a decryption tool. In many cases, we have observed that and many victims reported to us that hackers stop all communications after getting the money. Since hackers demand ransom money in Bitcoins, so there is no way to find who you are paying.

Ooii ransomware works with a single motive of blackmailing users and forcing them to pay money. Providing a decryption key is solely depends on evil hackers which you cannot trust. We suggest you remove this virus completely from your system and then try alternative ways to restore your encrypted files like backup copies or using data recovery software.

Ooii Ransomware: Threat Analysis

Name Ooii
Type Ransomware, File-Encrypting virus
Family STOP/DJVU Ransomware
Extension .Ooii
Threat Level High (Encrypt all your data and Restrict access to your files).
Symptoms Victims cannot access any files on their PC and find Ransom notes asking for money.
Damage Ooii Ransomware will encrypt your data by adding “.Ooii” extension to file names and demand ransom money for the decryption key
Ransom Note _Readme.txt
Ransom Amount $490 USD to $980 USD
Distribution It is mainly distributed through spam emails, bundled freeware, porn or torrent sites.
Removal Download SpyHunter 5 Anti-Malware
File Recovery Download Data Recovery Software

How your PC got infected by Ooii

It is very important to understand how your system got infected by this virus so that you can protect your PC in the future. The first thing we would like to mention is, the use of cracked or pirated software on your system can bring .Ooii File Virus on your system. Pirated copy of Windows is also vulnerable to threats because it uses KMSPICO for the activation which is a well-known virus and malware distributor.

Clicking on unknown ads, pop-ups, banners, push notifications in search of free applications also redirect users to suspicious websites which may host malicious codes. Most of the freeware programs contain malicious attachments which can be installed silently without users’ permission. Browsing to porn sites or sharing files on an unsafe network can also bring this malware to your PC.

Ooii ransomware virus removal tips

Ooii ransomware is a not common threat and thus it might not be so easy to get rid of this infection. You must seek professional help for the removal of this nasty malware from your system. We advise using both manual and automatic methods to ensure the safe and permanent elimination of this threat. For that, you will need to use a Powerful Anti-Malware Tool that finds and remove this infection at once. We have created a detailed guide with step-by-step instructions to help you in the removal process of .Ooii Virus.

Anti-malware tools can easily detect and remove this infection from your and can also block this malware or similar threats in the future. You need to run a thorough scan of your PC and remove all the files and elements related to this Ooii ransomware virus. Do not try to format or reinstall your Windows because you can never restore your files.

Once the removal of this infection then you can create a backup of all the encrypted files and store them on any external hard drive or the cloud drive. Then if you have any backup of your precious files then you can use them to restore your files. If you don’t have a backup then you can wait for the decryption tool or try a good Data Recovery Software to help you recover your files.

Automatic Ooii Virus Removal Guide

As you already know that, Ooii Virus is a notorious and cunning malware. It is quite hard to remove through manual means. This virus can create various files and shortcuts or modify system settings. It can keep coming back on your computer using them. Removing all those at once is the only way to get rid of this infection. It will also ensure that this virus cannot sneak into your system ever again.

Remove Ooii virus effectively with a powerful Automatic Removal Tool. It will save you lots of time and effort. It can detect and remove all hidden threats like Trojan, Ransomware, Worms, Spyware, Rootkits, etc. You will also get 24X7 customer support and one-on-one Spyware HelpDesk support. Advanced System Guard feature detects and removes threats in real-time. It has a very User-Friendly Interface and regular Malware updates make it most effective against the latest malware attacks.

How SpyHunter 5 Anti-Malware Works

  • First, you need to click on the below download button to get the software.

Geek’s Recommendation

Some time threats like Ooii Virus keep getting back on the machine if all associated files are not removed. You should use a powerful Malware Removal Tool to run a thorough scan of your PC and delete all threats at once.

SpyHunter 5 Anti-Malware offers a 7-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter 5 Review, and Free SpyHunter Remover details.

  • Then double-click on the installer you downloaded to install the program.

double clickAllow access

  • Launch Anti-Malware application and Start Scan Now of your PC.

Scan for Ooii

  • The software will scan your PC for all hidden threats and viruses on your system.

Scan for Ooii

  • Click on the Next button to see results and delete Ooii and other threats.

Remove Ooii

How To Recover .Ooii Files

After removing .Ooii Virus, you need to recover your data. If your files are important then you must have created a backup. If yes, then you can use that backup to recover your files. In case you don’t have a backup or this virus has encrypted your backup files, then you are left to seek professional help.

At this point, there is no Ooii ransomware decryption tool available. We recommend you use powerful data recovery software to decrypt .Ooii Files. It is a risk-free and smart way. You can just download the free version and scan your PC for files. There is a high probability that it can recover most of your files. It is also needless to say that paying the ransom will only motivate cybercriminals to carry out more attacks.

  • First, you need to download Data Recovery software on your PC.

Download Data Recovery Software

  • Install the program, launch it then select the Data type to recover, and click the Next button.

select Data type

  • Select the location from where you want to recover data and click the Scan button.

Select location

  • After the scan, software will list all files, select them and click the Recover button.

Recover Ooii encrypted files

Manual Ooii Removal Guide

Before you start Manual Removal
Please Bookmark This Page by pressing the {ctrl+D} button or print it out on paper before you start the Manual Removal because you may need to restart your PC or browser.) Attention! For the safety of your system, please confirm a few things before you begin Ooii Ransomware Removal:
  1. You have done this before, which means you have experience in removing the virus manually;
  2. That you know your way around PC and  all necessary processes and applications;
  3. You know about Registry entry and the Serious repercussions of any mistake;
  4. Make sure you can reverse any mistake made during .Ooii Virus removal.

If you don’t attain any of the above standards, then manual removal could be a very risky idea. It is most likely best for you to use the Ooii Ransomware Removal Tool which is totally secure and efficient method.

SpyHunter 5 Anti-Malware offers a 7-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter 5 Review, and Free SpyHunter Remover details.

Start PC in safe mode with networking

[mks_tabs nav=”horizontal”] [mks_tab_item title=”Windows 11″]

  • Press Windows & I keys together on keyboard to open Settings page and select Recovery option.

Recovery option

  • Now from the Advance settings option, click on Restart Now button.

Advanced startup

  • Select the Troubleshoot option from the list.

Troubleshoot

  • Click on Advanced Options from the Troubleshoot menu.

Advanced Options

  • Click on Startup Settings from the Advanced options.

Startup Settings

  • Press the Restart button on this page.

Restart

  • Finally, hit 5 to start your PC in Safe Mode.

5 [/mks_tab_item] [mks_tab_item title=”Windows 10″]

  • Click on the Start button and press the Power button.

win10 start button

  • Hold the Shift key and click the Restart option.

win10 restart

  • Select the Troubleshoot option from the list.

Troubleshoot

  • Click on Advanced Options from the Troubleshoot menu.

Advanced Options

  • Click on Startup Settings from the Advanced options.

Startup Settings

  • Press the Restart button on this page.

Restart

  • Finally, hit 5 to start your PC in Safe Mode.

5 [/mks_tab_item] [mks_tab_item title=”Windows 8″]

  • Press Windows & C buttons on the keyboard then select the Settings option.

Windows 8 settings

  • Hold down the Shift key then click on the Restart button from the Power option.

Windows 8 restart

  • Select the Troubleshoot option from the list.

Troubleshoot

  • Click on Advanced Options from the Troubleshoot menu.

Advanced Options

  • Click on Startup Settings from the Advanced options.

Startup Settings

  • Press the Restart button on this page.

Restart

  • Finally, hit 5 to start your PC in Safe Mode.

5 [/mks_tab_item] [mks_tab_item title=”Windows 7″]

  • Click on the Restart button, wait for Windows to load, and start pressing F8 button before the Windows splash screen shows.

Press F8 button

  • From the Advanced Boot option, use arrow keys to select Safe Mode with Networking option.

safe mode with networking

  • Press ENTER button to start PC in safe mode.

[/mks_tab_item] [mks_tab_item title=”All Windows OS”]

  • Press Windows Key + R buttons together on the keyboard.
  • Type msconfig in the Run Box then click the OK button.
  • Click on the Boot tab to open the System Configuration window.
  • Choose Safe Boot, check the network box, Click Apply, and press the OK button.

Safe boot [/mks_tab_item] [/mks_tabs]

End Process From Task Manager

  • Press Windows Key + R buttons together on the keyboard.
  • Type taskmgr in Run Box and then click the OK button.
  • Find any Ooii Virus related process.
  • Now right-click on it then click End process.

Stop Ooii related task

Uninstall Ooii from Windows PC

[mks_tabs nav=”horizontal”] [mks_tab_item title=”Windows 11″]

  • Right-click on Start or Windows button and select Apps and Features option.

Windows 11 Apps and Features

  • Find Ooii or other harmful programs, click on three dots icon, and press Uninstall button.

Uninstall Ooii from Windows 11 [/mks_tab_item] [mks_tab_item title=”Windows 10″]

  • Click on the Start or Windows button and click on Settings option.

Windows 10 settings

  • Click on the Apps option from Windows 10 settings page.

Windows 10 apps

  • Find Ooii or other harmful programs, then click on Uninstall option.

Uninstall Ooii From Windows 10 [/mks_tab_item] [mks_tab_item title=”Windows 8″]

  • First of all Press Windows Key + R buttons together.

win + R button

  • Type appwiz.cpl in the Run Box and then click OK button to open Programs and Features windows.

appwiz.cpl

  • Find and remove Ooii or other harmful programs.

Uninstall Ooii from Windows 8 [/mks_tab_item] [mks_tab_item title=”Windows 7″]

  • Click on the Start or Windows button and select Control Panel option.

Windows 7 Control Panel

  • Click on Uninstall A Program option under the Programs section.

Windows 7 Programs option

  • Find Ooii or other harmful programs and click on uninstall option.

Uninstall Ooii from Windows 7 [/mks_tab_item] [/mks_tabs]

Warning: Do not play with Windows registry, host file of restore options if you don’t have previous experience with. Removing wrong files may break your system entirely. So if you are not sure, then stick to the Automatic Malware Removal option. SpyHunter 5 Anti-Malware offers a 7-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter 5 Review, and Free SpyHunter Remover details.

Remove Virus related IP address from Hosts Files

  • Press Windows Key + R buttons together on the keyboard.
  • Type C:Windows/System32/drivers/etc in Run Box and then click the OK button.
  • Now open the hosts file with Notepad.
  • Look for any suspicious IP address that might be related to Ooii Virus.
  • Delete all the unknown IP addresses and save the host files.

Remove Ooii virus related IP address

Remove Virus related Windows Registry entries

  • Press Windows Key + R buttons together on the keyboard.
  • Type regedit in Run Box and then click the OK button.
  • Registry Editor will open, then press CTRL +F buttons together.
  • Now type Ooii and then click on Find Next button.
  • Find all the related entries and delete them one by one

Remove Ooii related registry

Delete Virus related files from your PC

When a threat gets on to a PC, it most likely creates some files at different locations on the system. These files are used to perform a specific action and also help malware in getting back to the computer once it’s removed. So you just need to find also delete all those files associated with this .Ooii File Virus. For that follow the below instruction :

  • Press Windows Key + R buttons together on the keyboard
  • Type each of the following in Run Box and press the OK button
  1. %AppData%
  2. %LocalAppData%
  3. %ProgramData%
  4. %WinDir%
  5. %Temp%

For the first four options, look for any recent folder related to the .Ooii File Virus and remove them. For the Temp folder, you can delete all the files.

Remove Ooii Virus via system restore

  • Press Windows Key + R buttons together on the keyboard.
  • Type cmd in Run Box and then click the OK button.
  • Type cd restore and press Enter, then type rstrui.exe and press Enter.
  • When the System Restore window opens on your computer screen click the Next button, then choose a System Restore point you have created in the past and click the Next button.
  • Finally, click on the Yes button to start the system restoration process.

Remove Ooii via system restore

Note: This will only work if you have a restore point set on your PC or it will give an error message. Restoring the computer to a previous version may or may not remove .Ooii File Virus. Most of the time, viruses just delete all the restore points. If this trick does not work for you then don’t get disappointed.

After restoring your computer, we recommend you run a thorough scan of the PC using a Powerful Anti-Malware program to detect and remove any hidden threats. In most cases, viruses may spread through any files outside of the C drive because system restoring only affect the C drive. There may be some Virus related files hiding your PC, and it never hurts to double-check.

Sometimes, system restore doesn’t work or viruses can just remove the restore points. As such you will probably have no other choice than to choose the Automatic Removal Process. It is the best and error-free method to find and remove threats from your computer. Additionally, you should also check some important malware prevention tips provided here in this guide to avoid similar virus attacks in the future.

Remove Ooii Virus From MacOS

If you are a mac user, and your machine got infected by this file-encrypting malware then you need to remove it as soon as possible. Although Mac systems are quite safe they still do get infected. So you can delete this infection using the below steps:

Stop Virus From Activity Monitor

  • First, you need to open Utilities folder on your Mac system.
  • Find the Activity Monitor icon and double-click on it to open it.
  • Find Ooii related process, click the cross button from the upper left side corner to end task.
  • A pop-up dialogue box will appear on the screen, click on the Force Quit button.

Remove Virus From Application Folder

  • First, go to the Dock option (bottom of your screen) then click on Finder App.
  • Now you have to open the Applications Folders to see all the programs.
  • Find Ooii or any other unwanted program then move it to Trash.

Remove Ooii From Mac

Remove Ooii Virus Related Files From Mac

When any program is installed on your Mac, it creates several files on your system that support the functioning of that application. If you need to remove any virus from your Mac, then you need to delete all related files completely. These files could be found at :

  1. LaunchAgents
  2. Application Support
  3. LaunchDaemons

Follow below steps to remove virus related files from these locations:

  • First of all press the Command+Shift+G buttons together on your keyboard.
  • Now you can see Go To Folder option on your Mac screen.
  • Type in /Library/LaunchAgents in the text field and click on Go button.
  • Find and remove any Ooii Virus related files.

Now follow the same process for Application Support and LaunchDaemons folders. But be careful, don’t delete any important files or you can break down your entire system.

Attention: If you are not tech-savvy, then it could be quite difficult to remove Ooii File Virus manually from your Mac. The best way is to download SpyHunter Mac Anti-Malware and see if it can detect all hidden threats and viruses on your computer. It’s really super easy and you should give it a try.

How SpyHunter Mac Anti-Malware Works

  • First, download the SpyHunter for Mac by clicking on the below button.

Some time threats like Ooii Virus keep getting back on the machine if all associated files are not removed. So you are advised to use a powerful Malware Removal Tool to run a thorough scan of your Mac and delete all threats at once.

SpyHunter for Mac offers a 15-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter for Mac Review, and Free SpyHunter Remover details.

  • Now go to the Download Folder from the Docs and Install the SpyHunter Anti-Malware For Mac.

Install SpyHunter for Mac

  • Launch the Program, and click on Start Scan Now button.

Spyhunter for Mac start scan now

  • The software will start running a full scan of your mac instantly to look for any malware or security risks, and so on.

Spyhunter for mac scanning

  • Finally, you will see a list of malware detected on your mac, now click on the Next button to start the removal process.

Remove Malware with spyhunter for mac

Tips To Prevent .Ooii Virus in Future

  • Use a good anti-virus, be it a free version but don’t use cracked security programs.
  • Make sure that your Windows firewall is active, so it can block upcoming threats.
  • Keep your Windows/Mac OS and other programs updated to avoid vulnerabilities.
  • Download updates only from official websites, don’t use suspicious sites.
  • Never download and install pirated software, games, or illegal patches on your PC.
  • Do not open spam emails from an unknown sender and scan all attachments before opening.
  • Never download freeware third-party programs from unreliable sources or websites.
  • Avoid connecting your PC to unsafe public Wi-Fi to protect your privacy.
  • You can also use a VPN to spoof your connection and avoid harmful sites.
  • Create a system restore point on your system for security purposes.
  • Keep a backup of all your important files to avoid data loss.

Frequently Asked Questions

What is .Ooii File Virus Ransomware?

Ooii Virus is a Ransomware infection that encrypts all the files on an infected PC such as Videos, photos, music, databases, documents, backup, etc. After that, it forces victims’ to pay huge ransom money for the decryption key. It is the latest variant of STOP/DJVU Ransomware infection. It adds its own “.Ooii” extension to all your files and also ransom note “_Readme.txt” in all compromised folders.

How did Ooii Virus infected my computer?

Creators of this threat can use several techniques to spread this malware. Usually, threats like Ooii Virus intrude on your computer through Bundled Freeware programs, Spam emails, cracked software, illegal patches, fake software updates, clicking on suspicious links, and visiting porn or torrent sites.

How can I open “.Ooii” files?

Unfortunately, you cannot open “.Ooii” files without decrypting them first. All your files are encrypted and you need a decipher or decryption key to unlock those files before accessing them.

Are my files completely lost?

No, your files are still there on your computer but you simply don’t have access. Ooii virus has encrypted your files and they can only be accessed after using a decrypting key for which it is demanding the ransom money.

How to decrypt .Ooii Files?

There is no perfect Ooii ransomware decryptor available currently which can restore all your files. But we have suggested a quite effective Ooii File Recovery method in this guide which you can follow to recover your files. But don’t try to restore your data without removing the virus because it will keep encrypting your files.

How to Remove Ooii Ransomware Virus?

It could be quite hard to remove this infection from computers, especially for non-technical users. We have shared several tips on removing this threat manually in this guide which you can use. If you have no prior experience with virus removal then feel free to Download Ooii Ransomware Virus Removal Tool. It is the safest and easiest way to remove this infection from your PC.

Still, having issues? Need help?

Some time threats like Ooii Virus keep getting back on the machine if all associated files are not removed. So you are advised to use a powerful Malware Removal Tool to run a thorough scan of your PC and delete all threats at once.

SpyHunter 5 Anti-Malware offers a 7-day fully-functional Free Trial. Credit card required, NO charge upfront. No charge if you cancel up to two business days before the trial period ends. Read SpyHunter 5 Review, and Free SpyHunter Remover details.

About the author

Robert Calvert

Robert is the Chief Security Expert and Founder of PCSafetyGeek.com website. He is a cybersecurity enthusiast who loves to research about Malware outbreaks and write about their remedies. He also like to spend time trying new software, reviewing them and sharing IT news. However he is a real coffee lover and likes to play chess in spare time (which is quite rare 😜).

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