QBAA Virus (.qbaa File) Ransomware — Remove & Decrypt Files

If you can’t open your pics, documents, or data and also see the .qbaa extension on them, your PC is definitely infected with Qbaa ransomware. It belongs to STOP/Djvu ransomware family

Qbaa ransomware ciphers personal documents found on the victim’s computer with the extension “.qbaa” and then generates the ransom note in each folder which contains encrypted files. The instructions are placed on the victim’s PC in the “readme.txt” file. Its activity is generally similar to other variants of the same ransomware family: Vyia, Ooif, Iiof.

What is Qbaa Ransomware?

NameQbaa Virus
Ransomware family1DJVU/STOP2 ransomware
Ransomware note_readme.txt
RansomFrom $490 to $980
Contactmanager@mailtemp.ch, helprestoremanager@airmail.cc
SymptomsThe images, videos, and other documents have the “.qbaa” extension and cannot be opened by any programs
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Qbaa is file-encrypting ransomware that prevents regular access to your text files, Excel tables, videos and pics by encrypting them. It marks the ciphered files with the “.qbaa” extension. Then Qbaa ransomware adds a ransom note (readme.txt) to each folder. In this note, you can see the guidance to pay the ransom ($490-$980 in Bitcoin) to a certain Bitcoin address. The AES-256 or RSA-1028 cipher it utilizes to cipher the files is not decryptable with modern computers. Even quantum PCs that already exist will spend thousands of years to find the decryption key.

How dangerous is the Qbaa ransomware?

When Qbaa ransomware gets on your computer, it will scan your computer 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 also change their extension to “.qbaa” to make sure that you understand what happened.

After the Qbaa ransomware encrypted the data on your PC, it will generate the last “readme.txt” file on the desktop. In addition to the ransom payment instructions, the victims also see the emails to contact the fraudsters – helprestoremanager@airmail.cc and manager@mailtemp.ch.

Here is the money ransom note that the Qbaa 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 Qbaa ransomware get on my computer?

The Qbaa ransomware spreads by posting websites to download hacked programs or games. Cybercriminals who distribute this ransomware are quite clever, and try to keep in touch with contemporary trends. New games introductions, new popular films – Qbaa developers make whatever to get their victims on that. One of the most popular tactics these criminals apply is one-day websites with torrent downloading links. However, using the modern things is not the single tactic these burglars utilize. Ways that have already become standard, such as e-mail spamming, are also typical for STOP/Djvu ransomware spreading.

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

Preventing this ransomware does not need a lot of initiative. Adhering to the standard rules of computer hygiene will significantly decrease all dangers. Bear in mind that opening all documents you get on email is not a great tactic. Even worse case is to enable macros in Microsoft Office documents. But it is better to prevent the malware intrusion at the moment when you have only opened the email message. Checking the sender’s address can point out a lot about what you can anticipate, and when you see things like “support@amazon.com”– it is likely a genuine e-mail. Meanwhile, stuff that tries to resemble Amazon or FedEx shipping alert, however, 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.

Outlaw sources of various digital things need some additional explanation. Breaking copyright regulation already throws you to the danger of being fined. Nonetheless, utilizing torrent trackers or third-party websites to download “free” programs also exposes you to various malware. Nobody can oversee undisclosed people who start the torrent seeding or publish the hacked program version on the website with pirated software.

Qbaa 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 Qbaa 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 Qbaa ransomware

In most cases, it’s impossible to recover the files encrypted by the Qbaa 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 Qbaa 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 .qbaa 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 Qbaa 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.

QBAA Ransomware — How To Remove Virus & Decrypt Files?

Name: QBAA Virus

Description: QBAA Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific qbaa extension. QBAA 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.