FGUI Virus (.fgui File) Ransomware — Remove & Decrypt Files

Written by William Reddy

If you can’t open your images, documents, or files and also see the .fgui extension on them, your PC is definitely infected with Fgui ransomware. It pertains to STOP/Djvu ransomware family

Fgui ransomware encrypts personal files found on the victim’s PC with the extension “.fgui” and then leaves 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 task is pretty much comparable to other samples of the same ransomware family: Jjtt, Rtgf, Ooii.

What is Fgui Ransomware?

NameFgui 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 “.fgui” extension and cannot be opened by any programs
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Fgui is file-encrypting ransomware that prevents access to your text files, Excel tables, videos and photos by encrypting them. It marks the encrypted files with the “.fgui” extension. Then Fgui 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 specified Bitcoin wallet. The AES-256 or RSA-1028 cipher it uses to encrypt the files is not decryptable with modern computers. Even quantum PCs that already exist will likely spend thousands of years to get the decryption key.

How dangerous is the Fgui ransomware?

When Fgui ransomware gets in your system, 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 files are found, the ransomware will encrypt them and also change their extension to “.fgui” to ensure that you understand what happened.

After the Fgui ransomware ciphered the data on your PC, it will drop the last “readme.txt” file on the main screen. In addition to the ransom transactioning instructions, the victims also see the emails to contact the crooks – helprestoremanager@airmail.cc and manager@mailtemp.ch.

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

The Fgui ransomware spreads by posting links to get hacked programs or games. Cybercriminals who distribute this ransomware are extremely tricky, and try to correspond with the latest things. New games introductions, new popular movies – Fgui creators make whatever to get their money on that. One of the most favored methods these burglars apply is one-day sites with torrent downloading links. Nevertheless, following the modern-day things is not the only tactic these criminals use. Options that have already become standard, such as email spamming, are likewise usual for STOP/Djvu ransomware distribution.

Malicious email spam

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

Preventing this ransomware does not require a lot of effort. Using the standard principles of computer hygiene will significantly minimize all risks. Bear in mind that opening all files you get on e-mail is not a great habit. Even worse situation is to enable macros in Microsoft Office files. However, it is much better to prevent the malware intrusion at the moment when you have just opened the e-mail message. Examining the sender’s address can point out a lot about what you can anticipate, as well as when you see the thing like “support@amazon.com”– it is likely a genuine e-mail. Meanwhile, stuff that tries to look like Amazon or FedEx delivery notice, but uses the e-mail address of “amazonspurrot1363@gmail.com”– should make you get on the alarm. Above, you can see the example of such a message.

Illegal sources of various digital things require some extra explanation. Breaking copyright policy surely exposes you to the possibility of being fined. Nonetheless, utilizing torrent trackers or third-party websites to download “free” programs likewise exposes you to different malware. No one can oversee anonymous individuals that start the torrent seeding or release the hacked program version on the website with pirated software.

Fgui 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 Fgui 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 Fgui ransomware

In most cases, it’s impossible to recover the files encrypted by the Fgui 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 Fgui 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 .fgui 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 Fgui 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.

FGUI Ransomware — How To Remove Virus & Decrypt Files?

Name: FGUI Virus

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