OOII Virus (.ooii File) Ransomware — Remove & Decrypt Files

If you cannot open your images, documents, or files and also see the .ooii extension on them, your system is surely infected with Ooii ransomware. It pertains to STOP/Djvu ransomware group

Ooii ransomware encrypts personal documents found on the victim’s PC with the extension “.ooii” and after that generates the ransom note in each folder which contains encrypted files. The instructions are put on the victim’s PC in the “readme.txt” file. Its task is primarily comparable to other examples of the same ransomware family: Gcyi, Eucy, Ckae.

What is Ooii Ransomware?

NameOoii Virus
Ransomware family1DJVU/STOP2 ransomware
Extension.ooii
Ransomware note_readme.txt
RansomFrom $490 to $980
Contactmanager@mailtemp.ch, helprestoremanager@airmail.cc
SymptomsThe images, videos, and other documents have the “.ooii” extension and cannot be opened by any programs
Fix Tool Trojan Killer – ransomware infections tool. 14-day free trial.

Ooii is file-encrypting ransomware that prevents normal access to your text files, Excel tables, videos and photos by encrypting them. It marks the encrypted files with the “.ooii” extension. Then Ooii ransomware adds a money ransom note (readme.txt) to each folder. In this note, you can see the instructions to pay the ransom ($490-$980 in Bitcoin) to a certain Bitcoin wallet. The AES-256 or RSA-1028 cipher it utilizes to encrypt the documents is not decryptable with modern computers. Even quantum computers that currently exist will spend hundreds of years to get the decryption key.

How dangerous is the Ooii ransomware?

When Ooii ransomware gets on your PC, it will run through your system for images, videos, and important documents. It encrypt] all widespread file formats- .psd, .doc, .docx, .xls, .xlsx, .pdf, .jpeg, .png, et cetera. When these documents are found, the ransomware will cipher them and change their extension to “.ooii” so that you understand what happened.

After the Ooii ransomware ciphered the files on your computer, it will generate the last “readme.txt” file on the main screen. Besides the ransom payment instructions, the victims also see the email addresses to contact the fraudsters – helprestoremanager@airmail.cc and manager@mailtemp.ch.

Here is the ransom note that the Ooii ransomware shows to its victims:

ATTENTION!

Don't worry, you can return all your files!
All your files like pictures, 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-fhnNOAYC8Z
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

How did the Ooii ransomware get on my computer?

The Ooii ransomware spreads by placing websites to download hacked programs or games. They keep their eye on all hype subjects which can be used to spread ransomware. New games releases, new popular films – Ooii creators make whatever to get their money on that. One of the most favored techniques these crooks put to use is one-day websites with torrent downloading links. However, pursuing the current trends is not the only way these crooks utilize. Ways that have already become classic, such as e-mail spamming, are likewise typical for STOP/Djvu ransomware spreading.

Malicious email spam
The example of email spamming that may lead to Ooii ransomware injection

Preventing this ransomware does not require a lot of effort. Using the ordinary principles of PC hygiene will significantly decrease all dangers. Bear in mind that launching all documents you receive on email is not a great tactic. Even worse scenario is to enable macros in Microsoft Office files. But it is better to stop the malware intrusion at the moment when you have just opened the e-mail message. Checking the sender’s address can point out a lot about what you can anticipate, and also when you see the thing like “support@amazon.com”– it is likely a legitimate e-mail. On the other hand, stuff that tries to resemble Amazon or FedEx delivery alert, but uses the e-mail address of “amazonspurrot1363@gmail.com”– should make you get on the alarm. Above, you can see the illustration of such a message.

Illegal sources of various digital things need some extra explanation. Breaking copyright policy surely throws you to the possibility of being fined. Nevertheless, using torrent trackers or third-party websites to download “free” programs likewise exposes you to a wide range of malware. Nobody can oversee undisclosed people that launch the torrent seeding or release the hacked program version on the website with pirated program.

Ooii virus removal instructions.

Download Trojan Killer Portable

Trojan Killer Portable Download

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This guide below shows how to use Trojan Killer Portable3 for Ooii virus detection and removal:

  • STEP 1. Download and install Trojan Killer.

  • STEP 2. Click on "Finish".

  • STEP 3. Wait until necessary updates are downloaded and installed.

  • STEP 4. Select computer scan type.

  • STEP 5. The software will begin scanning your computer.

  • STEP 6. Click on "Cure PC".

Restore the files encrypted by the Ooii ransomware

In most cases, it’s impossible to recover the files encrypted by the Ooii ransomware because the private key needed to unlock the encrypted files is only available through cybercriminals. However, we’ve listed one option you can use to recover your files below.

Warning! Make sure you remove the ransomware from your system first, otherwise, it will repeatedly encrypt your files.

If your files were encrypted with an offline key, there is a chance you can recover them by using Emsisoft Decryptor for the STOP/Djvu decryption tool. Follow the below guide to recover your files using the Emsisoft Decryptor for STOP/Djvu.

  1. You can download Emsisoft Decryptor for STOP Djvu by clicking this link.
  2. When the decryptor has finished downloading, double-click on “decrypt_STOPDjvu.exe” to run this program on your computer.
  3. Click the “Decrypt” button to start the decryption process for Ooii files. The screen will switch to a status view, informing you about your files’ current process and decryption status.
  4. The decryptor will inform you once the decryption process will be finished. If you require the report for your records, you can save it by clicking the “Save log” button.

If the Emsisoft Decryptor can’t decrypt your .ooii files and you do not plan on paying the ransom, it is advised that you make an image of the encrypted drives so that you can decrypt them in the future.

Your computer should now be free of the Ooii ransomware infection. However, suppose your current antivirus allowed this malicious program on your computer. In that case, you might want to consider purchasing the full-featured version of Trojan Killer to protect against these types of threats in the future.

OOII Ransomware — How To Remove Virus & Decrypt Files?

Name: OOII Virus

Description: OOII Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific ooii extension. OOII ransomware asks victims for a ransom fee about $490 - $980 in Bitcoin.

Offer price: 480

Currency: $

Operating System: Windows

Application Category: Virus

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  1. My files are encrypted by ransomware, what should I do now?
  2. About DJVU (STOP) Ransomware: https://gridinsoft.com/ransomware/djvu
  3. More about Trojan Killer: https://gridinsoft.com/trojankiller

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About William Reddy

I am from Ireland. My parents bought me a computer when I was 11, and several months after I have got a virus on this PC. I decided to enter the INSA Centre Val de Loire university after being graduated from the school. This French educational institution was offering a brand-new cybersecurity course. After getting the master's degree in cybersecurity, I've started working as a virus analyst in a little anti-malware vendor.