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  • Active
  • Severity: High
  • Ransomware
  • Windows
  • Verified · Feb 2022

How to remove Ooii ransomware

A step-by-step removal guide for affected devices. Follow the verified procedure below — most readers complete it in under 10 minutes.

Lucia Danes · Virus researcher

Ooii ransomware is the threat that affects the machine and then requires money for the decryption that might not be possible at all

Ooii ransomware

Criminals develop the Ooii file virus for the purpose of money extortion. This threat locks files once it gets on the machine and scams people into paying the ransom demand. A strong encryption algorithm allows the threat to change the original code of the file and makes it unopenable.[1]

Ooii ransomware is a malicious program designed to encrypt all personal data on the computer and then demand ransom for its return. This virus can be downloaded and carried by using various methods, but one of the more common ways to spread the threat involves downloading pirated content or malicious files from email messages.

You may not see any symptoms until encrypted data gets locked and marked with the .ooii appendix. The threat could run in the background for a while before acting on those commonly used files. But mainly, encryption is the first process and the one that frustrates people the most.

When the encryption is complete, Ooii file virus drops a ransom note – instructions from cybercriminals. It explains to victims what happened and claims that they can only get back their files by paying for an unlocking tool which will be sent after the payment. But that is not always happening. It is dangerous, even contacting criminals via email support@sysmail.ch or helprestoremanager@airmailcc.

Name Ooii ransomware
Type Cryptovirus, file-locker
Family STOP file virus/ Djvu ransomware
Marker .ooii appears at the end of the original name of the file
Distribution Ransomware can spread around with the help of pirating platforms, spam email campaigns
Ransom note _readme.txt
Ransom amount $490/ $980
Contact details support@sysmail.ch, helprestoremanager@airmail.cc
Elimination Antivirus tools can find the threat and all related files to properly remove it from the affected system. It is crucial because leftover can create issues
Repair tips Threats can trigger additional issues and even leftovers can lead to issues, so run FortectIntego for the proper system repair

Cybercriminals claim that the only way to unlock them is by paying off this ransom, but before you do anything, consider all the risks. The most important thing about the threat is removing it fully from the machine. Ooii virus can lead to serious issues, money losses, permanent file damage if not terminated properly.

Unfortunately, there is no way for victims of this malware to recover their files without paying the ransom. There can be decryption tools officially developed for this, but this version is not decryptable. The best way is to remove infection and use data backups to replace affected files.

Eliminating the threat

There is a common belief that paying the ransom will guarantee your data's security and recovery, but experts[2] recommend against this practice. Cybercriminals might not keep their promises resulting in financial losses for you.[3] In this article, we'll explain how to get rid of the Ooii file virus by properly using the available alternative methods.

The first tip is to ignore criminals and not consider paying or contacting them. These people are not to be trusted. The crypto-virus or file locking malware encrypts all important files on a Windows computer and restricts access. In the ransom note left by criminals, they mention giving discounts in exchange. Do not fall for this trick.

Ooii file virus

Ooii ransomware can be removed with the help of SpyHunterCombo Cleaner or MalwarebytesMalwarebytes and similar security or AV tools. Anti-malware programs can detect the files on the system and find all the associated threats, so those pieces can be terminated. Elimination of ransomware can help stop all the processes and stop worries about your system. It is important because removing the threat guarantees that all malware is not causing additional issues.

Once a computer is infected with malware, its system is changed to operate differently. For example, an infection can alter the Windows registry database, damage vital bootup, and other sections, delete or corrupt DLL files, etc. Once a system file is damaged by malware, antivirus software is not capable of doing anything about it, leaving it just the way it is. Consequently, users might experience performance, stability, and usability issues, to the point where a full Windows reinstall is required.

Therefore, we highly recommend using a one-of-a-kind, patented technology of FortectIntego repair. Not only can it fix virus damage after the infection, but it is also capable of removing malware that has already broken into the system thanks to several engines used by the program. Besides, the application is also capable of fixing various Windows-related issues that are not caused by malware infections, for example, Blue Screen errors, freezes, registry errors, damaged DLLs, etc.

  • Download the application by clicking on the link above
  • Click on the ReimageRepair.exe
    Reimage download
  • If User Account Control (UAC) shows up, select Yes
  • Press Install and wait till the program finishes the installation process
  • The analysis of your machine will begin immediatelyReimage scan
  • Once complete, check the results – they will be listed in the Summary
  • You can now click on each of the issues and fix them manually
  • If you see many problems that you find difficult to fix, we recommend you purchase the license and fix them automatically.

Options for file recovery

Ooii ransomware comes from the particular ransomware family that releases different versions constantly and affects machines quickly. Recent changes to the Djvu ransomware doing methods allow to spread new versions each week, so all the recent releases are more dangerous than those decryptable versions that got distributed in 2019. This threat and previously released Gcyi, Ccps, Eucy are non-decryptable due to the use of inline ids only.

Cracking the encrypted files on your device can be difficult if you don't know which ID was given to the machine. There are both offline and online keys in use, but they're not always used interchangeably because there's a difference. Sometimes the use of servers is not possible, so while others have built-in codes and use offline ids with less unique patterns, other infections manage to carry out processes with online IDs.

With offline keys, you can use the same ID for all affected devices. It is universal for all victims of the same virus. Ooii file virus relies on online IDs nowadays, so each device gets a different key that is needed for file recovery. However, until the official tool is developed, options are limited. You can find a tip for Emsisofts' tool below, but options now rely on backups.

Since many users do not prepare proper data backups prior to being attacked by ransomware, they might often lose access to their files permanently. Paying criminals is also very risky, as they might not fulfill the promises and never send back the required decryption tool.

Therefore, we suggest trying regardless of which ransomware attacked your computer. Before you begin, several pointers are important while dealing with this situation:

  • Since the encrypted data on your computer might permanently be damaged by security or data recovery software, you should first make backups of it – use a USB flash drive or another storage.
  • Only attempt to recover your files using this method after you perform a scan with anti-malware software.

Install data recovery software

  1. Download Data Recovery Pro.
  2. Double-click the installer to launch it.
  3. Follow on-screen instructions to install the software.
  4. As soon as you press Finish, you can use the app.
  5. Select Everything or pick individual folders where you want the files to be recovered from.Select what to recover
  6. Press Next.
  7. At the bottom, enable Deep scan and pick which Disks you want to be scanned.
  8. Press Scan and wait till it is complete.Scan
  9. You can now pick which folders/files to recover – don't forget you also have the option to search by the file name!
  10. Press Recover to retrieve your files.Recover files

Anti-malware tools should be kept on the machine and launched from time to time, so an infection like this Ooii file virus is avoided. Tools like SpyHunterCombo Cleaner or MalwarebytesMalwarebytes not only can find active malware but detect potentially dangerous files and block them from accessing the system. You should update security tools to keep the PC virus-free.

In addition to the proper tools for the Ooii ransomware removal, we also recommended having applications properly keep processes of the machine running. FortectIntego is not removing the threat or decrypting files, but some of the features that are inbuilt on the Windows machines can significantly improve the file repair and virus removal success.

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