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

How to remove Gcyi 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

Gcyi ransomware is the infection that encrypts files and appends them using .gcyi marker

Gcyi ransomware

Gcyi files virus is a threat that can be considered a malicious program because it involves money extortion and creates issues on the machine besides directly locking the commonly used files. This is a really sophisticated threat that requires immediate attention. The file-locking virus can be based on cryptocurrency extortion features,[1] and it locks down your computer immediately after infection. The infiltration is silent and quick, so none of the symptoms get noticed.

When the ransomware gets inside your system, it encrypts all personal pictures, videos, documents, archives, and other files by using an encryption algorithm. The army grade method allows to change the original code of the file and make the piece unopenable. The process also appends a unique .gcyi extension to each encrypted file's name.

To access the affected data, people need to follow the instructions listed on the ransom note _readme.txt. The victim gets encouraged to pay up and for that person will need a key that is in possession of the attackers. The contact should be initiated and then you can pay for the decryption services from Gcyi file virus creators (support@sysmail.ch or helprestoremanager@airmail). Experts[2] do not recommend writing them via those provided emails – they may end badly with additional malware installs and direct extortion.

Name Gcyi virus
Type Ransomware, file-locker, cryptovirus
Family STOP ransomware/ Djvu file virus
File marker .gcyi
Distribution Files attached to spam emails, delivered with pirating software from torrent platforms and similar sites
Ransom note _readme.txt
Contact details support@sysmail.ch, helprestoremanager@airmail.cc
Elimination Anti-malware tools are crucial here because threats like this can be detected and removed properly only with AV detection engine based programs[3]
Restoring system performance While running on the machine, ransomware triggers additional damaging processes, so try to launch FortectIntego for the best virus damage repair

Ransomware threat type in detail

These threats that focus on file locking have more symptoms and issues than it seems. The infiltration is silent, quick to affect machines without any warning until they are damaged significantly by ransomware infection. Cryptovirus like Gcyi ransomware can be spread around the world because threat actors release various files with malware payloads in order for their schemes to go unnoticed by victims.

Then creators demand money from victims after claiming they'll recover encoded ones if paid enough. People believe these claims, even though there have been cases where this doesn’t work at all either way. The criminals are scammers who only care about their own gains. Don't let them get away

The ransom note with Gcyi file virus message reads:

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:
hxxps://we.tl/t-XG8CpMbJwj
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:
support@sysmail.ch

Reserve e-mail address to contact us:
helprestoremanager@airmail.cc

Your personal ID:

Removing the infection with additional tools before recovering data

Cryptocurrency extortion has been around for quite some time now, and it's to not only lock down computers but also get money from their victims with lies. There is some good news: running an anti-malware check will remove any infection ASAP, so make sure you do that as soon as possible before it's too late. 

Those files that get encoded are directly damaged, but some of the pieces in your system folders can be corrupted. Gcyi ransomware affects commonly used documents and photos because they indicate how often people use them which leads to an even greater risk for loss with this type of cyber threat.

Gcyi file virus

The longer this threat can run on the machine the more issues get created on the computer. It needs immediate attention; otherwise, file-locking will be not the only symptom and issue. The Gcyi virus is one of the most dangerous types out there because it will encrypt all your files and give you an intimidating message demanding money in return for decryption.

It is crucial to remove the infection as soon as you noticed any of the problems with the machine. Anti-malware tools can help with the termination of any of the threats. Trojans and other malware can be related to the cryptovirus infection, so it is crucial to run SpyHunterCombo Cleaner or MalwarebytesMalwarebytes to find and eliminate the infection properly. Try to stop these activities and then worry about Gcyi ransomware virus damage and possible leftovers.

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 reinstallation 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
  • If User Account Control (UAC) shows up, select Yes
  • Press Install and wait till the program finishes the installation processReimage installation
  • 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.

The security industry has been bombarded with news reports regarding new ransomware attacks. The output tone of voice should be serious because this is a major threat that can cause many other issues on the machine, which is why experts always note how important it's to react quickly. Since decryption options are unavailable – we provide alternatives here for your consideration but remember: removing infections will always be most critical in any response plan!

Possibility to decrypt .gcyi files

In recent months, we have seen a variety of new viruses pop up. One, in particular, is the Djvu ransomware virus and its versions. The Gcyi file virus is one of them which relies on online keys during the encryption of your files and then demands payment for their release.

Malware implementation has become more sophisticated in 2019. The family releases non-decryptable versions every week or even more often now to keep up with their goals of getting money. These advanced techniques are why you should always update your antivirus program as soon as possible. Detection evasion is often the technique.

Using the offline key method allowed researchers to help many victims, but those aren't often used by criminals. Online IDs are unique for each separate device affected by the same or different versions of malware. When the connection cannot be initiated with the C&C server, the Gcyi file virus uses offline IDs. It is still possible to use the decryption tool soo, if so.

If your computer got infected with one of the Djvu variants, you should try using Emsisoft decryptor for Djvu/STOP. It is important to mention that this tool will not work for everyone – it only works if data was locked with an offline ID due to malware failing to communicate with its remote servers.

Even if your case meets this condition, somebody from the victims has to pay criminals, retrieve an offline key, and then share it with security researchers at Emsisoft. As a result, you might not be able to restore the encrypted files immediately. Thus, if the decryptor says your data was locked with an offline ID but cannot be recovered currently, you should try later. You also need to upload a set of files – one encrypted and a healthy one to the company's servers before you proceed.

  • Download the app from the official Emsisoft website.
  • After pressing Download button, a small pop-up at the bottom, titled decrypt_STOPDjvu.exe should show up – click it.
  • If User Account Control (UAC) message shows up, press Yes.
  • Agree to License Terms by pressing Yes.

  • After Disclaimer shows up, press OK.
  • The tool should automatically populate the affected folders, although you can also do it by pressing Add folder at the bottom.
  • Press Decrypt.

From here, there are three available outcomes:

  1. Decrypted!” will be shown under files that were decrypted successfully – they are now usable again.
  2. Error: Unable to decrypt file with ID:” means that the keys for this version of the virus have not yet been retrieved, so you should try later.
  3. This ID appears to be an online ID, decryption is impossible” – you are unable to decrypt files with this tool.

Gcyi ransomware is one of the most harmful viruses. It can damage your machine significantly, so you need to remove this virus immediately, or else data might be lost forever and damaged permanently. This infection will cause system file corruption as well as the encryption process.

The AV tool will protect against malicious software like this ransomware as well as clear out any unwanted files from inside. You should run SpyHunterCombo Cleaner or MalwarebytesMalwarebytes to find and terminate the threat. However, the threat can affect persistence and disable some of these functions damaging launch time for security programs, so you might want to repair issues with system performance created by the Gcyi virus. Tools like FortectIntego can help with damaged machine files, system functions or data.

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