QOPZ Ransomware. How to decrypt .qopz files?

Written by William Reddy

If you cannot open your pics, documents, or files and see the .qopz extension on them, your system is definitely infected with Qopz ransomware. It belongs to STOP/Djvu ransomware group

Qopz ransomware ciphers personal files identified on the victim’s computer with the extension “.qopz” and then creates the ransom note in each folder which contains encrypted files. The instructions are put on the victim’s desktop in the “readme.txt” file. Its task is basically comparable to other variants of the same ransomware family: Saba, Sato, Fofd.

What is Qopz Ransomware?

NameQopz Virus
Ransomware family1DJVU/STOP2 ransomware
Ransomware note_readme.txt
RansomFrom $490 to $980
Contactsupport@fishmail.top, datarestorehelp@airmail.cc
SymptomsThe images, videos, and other documents have the “.qopz” extension and cannot be opened by any programs
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Qopz is file-encrypting ransomware that prevents regular access to your text files, Excel tables, videos and photos by ciphering them. It marks the encrypted files with the “.qopz” extension. Then Qopz ransomware adds a 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 BTC wallet. The AES-256 or RSA-1028 cipher it utilizes to encrypt the files is not decryptable with contemporary computers. Even quantum PCs that already exist will spend hundreds of years to brute force the decryption key.

How dangerous is the Qopz ransomware?

When Qopz ransomware gets in your system, it will check 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 files are found, the ransomware will encrypt them and also change their extension to “.qopz” to make sure that you understand what happened.

After the Qopz 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 cybercriminals – datarestorehelp@airmail.cc and support@fishmail.top.

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


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:
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:

How did the Qopz ransomware get on my computer?

The Qopz ransomware spreads by posting links to download hacked programs or games. Cybercriminals that spread this ransomware are very foxy, and aim to correspond with current trends. New games introductions, new popular films – Qopz creators make whatever to get their victims on that. Some of the most favored strategies these crooks utilize is one-day websites with torrent downloading links. Nonetheless, pursuing the modern things is not the only tactic these burglars use. Ways that have already become standard, such as email spamming, are also usual for STOP/Djvu ransomware spreading.

Malicious email spam

The example of email spamming that may lead to Qopz ransomware injection

Avoiding this ransomware does not need a lot of initiative. Following the standard rules of computer hygiene will significantly minimize all dangers. Bear in mind that opening all files you receive on email is not a great option. Even worse case is to allow macros in Microsoft Office documents. However, it is far better to prevent the malware intrusion at the moment when you have just opened the e-mail message. Inspecting the sender’s address can say a lot about what you can anticipate, and when you see things like “support@amazon.com”– it is likely a legit e-mail. At the same time, stuff that tries to look similar to Amazon or FedEx shipment notification, but uses the email address of “amazonspurrot1363@gmail.com”– need to make you get on the alarm. Above, you can see the illustration of such a message.

Illegal sources of various digital things need some additional explanation. Breaking copyright law already throws you to the possibility of being fined. Nevertheless, utilizing torrent trackers or third-party sites to download “free” programs also exposes you to different malware. No one can control undisclosed individuals that start the torrent seeding or publish the hacked program version on the site with pirated software.

Qopz 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 Qopz 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 Qopz ransomware

In most cases, it’s impossible to recover the files encrypted by the Qopz 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 Qopz 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 .qopz 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 Qopz 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.

Remove QOPZ Ransomware Virus (DECRYPT .qopz FILES)

Name: QOPZ Virus

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

Offer price: 480

Currency: $

Operating System: Windows

Application Category: Virus

User Review
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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

About the author

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.

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