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How to remove Gycc ransomware, Decrypt .Gycc files.

Myantispyware team November 23, 2023    

Gycc ransomware is a ransomware virus from the STOP (Djvu) family. When it gets in, it scrambles your files and adds a ‘.Gycc’ to their names. Suddenly, your ‘photo.jpg’ becomes ‘photo.jpg.Gycc’, and you can’t open it anymore.

But there’s a way out. Our guide has been crafted to tackle this exact issue. In this article, we’ll show you how to remove the Gycc ransomware and offer tips to potentially restore your files to their normal state. Stay with us, and let’s navigate this challenge together.

Gycc ransomnote

QUICK LINKS

  • What is Gycc virus?
  • Remove Gycc virus (ransomware)
  • Decrypt .Gycc files
  • Restore .Gycc files
  • Video Guide

What is Gycc Virus/Ransomware and How to Handle It

Gycc, part of the STOP (Djvu) family, is a malicious software that sneaks into computers, locks files, and demands payment for their release. It’s sneaky; it can get into your computer when you download programs from sketchy sites, use hacked games, or install fake Windows or Office tools.

How It Works

Once Gycc sneaks into your computer, its first step is to establish a base within the Windows system directory. Here, it makes a copy of itself, ensuring that it’s deeply rooted and harder to remove.

Next, it tries to reach out to its home server on the internet. This connection attempt is its way of getting a unique encryption key called the ‘online key’. If, for some reason (like no internet or a blockage), it can’t connect to its server, it’s prepared with a backup plan. It uses a stored ‘offline key’ instead, which is a sort of one-size-fits-all key.

With this key in hand, Gycc gets to its main mission: locking up your files. It goes through your documents, photos, videos, and more, encrypting them. This means it scrambles the data so you can’t access them. As a sign of its work, it renames each file by adding “.Gycc” at the end. For instance, ‘song.mp3’ becomes ‘song.mp3.Gycc’.

However, Gycc isn’t completely without mercy. It skips certain files that your system needs to run, such as those ending in .dll, .lnk, .bat, and some named “_readme.txt”. This way, your computer still works, but your personal and important files are held hostage.

To let you know what’s happened and what it wants, Gycc drops its ransom note. In any folder that has these newly renamed files, you’ll find a note titled “_readme.txt”. This isn’t a helpful read-me; it’s a message from the attackers, telling you they have your files and want money to release them. 📜💰

Is There Hope?

Yes! If your files got locked with the offline key, tools like Emsisoft’s Gycc File Decrypt Tool can help. But if it used the online key, things are trickier. Paying the attackers is risky; they might not unlock your files even after getting the money.

Gycc’s ransom note reads as follows:

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-CDZ4hMgp2X
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@freshmail.top

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

Your personal ID:

What Now?

If Gycc hits you, don’t pay right away. Instead, use trusted anti-malware software to clean your computer. Then, try the available decryption tools. And to keep safe in the future, avoid risky downloads and always have up-to-date security software.

In Summary

Gycc ransomware is a big threat, but by being cautious and informed, you can protect your files. Want a deeper dive on Gycc and steps to stay safe? Dive into our detailed guide.

Threat Summary

Name Gycc ransomware, Gycc file virus
Type Ransomware, Crypto malware, File locker, Crypto virus, Filecoder
File extension .Gycc
Ransom note _readme.txt
Contact support@freshmail.top, datarestorehelp@airmail.cc
Ransom amount $490 or $980 in Bitcoins
Detection Names Trojan.Win32.Save.a, ML/PE-A, BehavesLike.Win32.Lockbit.bc, CrypterX-gen [Trj], Ransom.Win32.STOP.dg!n, Trojan:Win32/Sabsik.FL.B!ml, Trojan:Win32/Sabsik.FL.B!ml
Symptoms Encrypted files marked with .Gycc extension, “_readme.txt” ransom note in each folder, demanding payment to decrypt files
Distribution ways Malicious downloads, email attachments, software vulnerabilities
Damage Data loss, financial loss, system instability, compromised personal information, decreased productivity
Removal Use reputable anti-virus software to remove the malware, restore files, use free decryptors available
Decryption Gycc File Decrypt Tool
Prevention and Protection Regularly back up data, avoid suspicious links and email attachments, keep software up-to-date, use reputable anti-virus software

How to remove Gycc virus (ransomware)

To successfully decrypt or recover .Gycc files, it is essential to eliminate Gycc ransomware and its autostart entries. Failing to do so may result in the ransomware re-encrypting the restored files. Stopping the ransomware is a straightforward process and can be accomplished through various methods. One way is to perform a complete system scan using malware removal tools that can detect and remove ransomware infections for free. To make the process more convenient, consider reading this entire guide and saving it on your smartphone or printing it out. This way, you will have easy access to all the necessary steps.




Scanning your computer for malware is crucial since security researchers have discovered that Gycc ransomware may install spyware alongside it. Spyware poses a significant security risk as it can steal sensitive information like passwords, login credentials, and contact details from the user. If you encounter any issues removing the Gycc virus, feel free to inform us in the comments section, and we will attempt to assist you.

To remove Gycc ransomware, follow the steps below:

  1. Kill Gycc virus
  2. Disable Gycc Start-Up
  3. Delete Gycc Task
  4. Remove Gycc virus

Kill Gycc virus

Press CTRL, ALT, DEL keys together.

remove ransomnote - task manager

Click Task Manager. Select the “Processes” tab, look for something suspicious that is the Gycc ransomware then right-click it and select “End Task” or “End Process” option. If your Task Manager does not open or the Windows reports “Task manager has been disabled by your administrator”, then follow the guide: How to Fix Task manager has been disabled by your administrator.

kill virus

Detecting a process associated with Gycc ransomware is not a complicated task. To identify a malicious process, you need to scrutinize the process icon and its name. Typically, this ransomware employs a process name with four characters in the format of 4-characters.tmp.exe or 4-characters.exe. For instance, A4b1.exe, 7533.tmp.exe, 19b2.exe, or CD15.tmp.exe. You may also come across the phrase “(32 bit)” in the process name. If you do not locate a process with a similar name on the processes list, it is likely that the Gycc ransomware has stopped functioning. However, it is crucial to note that if you do not eliminate the ransomware autostart entries and fail to delete its file, it may reappear after a while and immediately encrypt any unencrypted files it finds.

Disable Gycc Start-Up

Select the “Start-Up” tab, look for something similar to the one shown in the example below, right click to it and select Disable.

disable startup

Close Task Manager.

Delete Gycc Task

Type “Task Scheduler” in the search bar. Click Task Scheduler app in the search results. Click “Task Scheduler Library” in the left panel. On the right panel, right-click to “Time Trigger Task” and select Delete.

delete task

Close Task Scheduler.

Remove Gycc virus

Run Task Manager and select the “Start-Up” tab. Right click to the Gycc ransomware Start-Up entry and select Open File Location as shown below.

remove virus 1

A directory containing one file will open in front of you, this file is the Gycc virus. It needs to be removed. If you try to delete it immediately, then you will not succeed, since this file is protected from deletion.

remove virus 2

To delete this file, you need to do the following. Right-click on the file, select Properties. In the window that opens, select Security tab. Next, click the Advanced button below. A window will open as shown in the following example.

remove virus 3

Click Disable inheritance. In the Block inheritance dialog box that opens, select the first item (Convert inherited permissions…) as shown below.

remove virus 4

In the Permission entries list, select “Deny Everyone”, click Remove button and then OK. Close the file properties window. You should now be able to remove the Gycc virus. Right-click on the file and select Delete.

Scan computer for malware

Malwarebytes is a reputable antivirus and anti-malware software that can be used to remove various types of malware from infected devices. However, the effectiveness of Malwarebytes in removing ransomware depends on the type and severity of the ransomware infection.

Malwarebytes can detect and remove most ransomware threats, including Gycc ransomware, which is a type of ransomware that encrypts victims’ files and demands a ransom for decryption. Malwarebytes uses advanced scanning algorithms and heuristics to detect and remove malicious files, processes, and registry entries associated with ransomware.

However, if the ransomware has already encrypted the victim’s files, Malwarebytes alone cannot decrypt them. In this case, the victim would need to use Stop (Djvu) Decryptor, or restore the encrypted files using the steps below.

Click the following link and download the latest version of Malwarebytes for your operating system.

Malwarebytes Anti-malware
Malwarebytes Anti-malware
327148 downloads
Author: Malwarebytes
Category: Security tools
Update: April 15, 2020

Once the download is complete, double-click on the downloaded file to start the installation process.

MalwareBytes AntiMalware for MS Windows icon

Follow the instructions provided by the Malwarebytes installer to complete the installation process.

MalwareBytes Anti-Malware for Microsoft Windows setup

After the installation is complete, launch Malwarebytes by double-clicking on its desktop icon or through the Start menu.

MalwareBytes Anti-Malware for Windows

In the Malwarebytes main screen, click on the “Scan” button to start a system scan. Malwarebytes will automatically scan your system for ransomware, malware, adware, and other potentially unwanted programs (PUPs).

MalwareBytes AntiMalware search for Gycc ransomware, other malware, worms and trojans

After the scan is complete, Malwarebytes will display a list of threats found on your system. To remove the threats, click on the “Quarantine” button.

MalwareBytes for MS Windows, scan for ransomware virus is finished

Malwarebytes will quarantine the detected threats, which will prevent them from harming your computer. Once the quarantine process is complete, you can choose to either delete the quarantined files or restore them if you believe they are legitimate. After you have selected the appropriate action, restart your computer to complete the removal process.

To ensure complete removal of the Gycc virus from your computer, we suggest utilizing the Kaspersky virus removal tool (KVRT) which is both cost-free and user-friendly. With its ability to detect and delete different types of malware, including ransomware, spyware, adware, worms, trojans, potentially unwanted apps, and more, KVRT is a powerful tool. Additionally, it can locate and remove malicious files and registry entries that may be concealed on your system.

Download Kaspersky virus removal tool from the following link. Save it to your Desktop.

Kaspersky virus removal tool
Kaspersky virus removal tool
129256 downloads
Author: KasperskyÂź lab
Category: Security tools
Update: March 5, 2018

When downloading is finished, double-click on the Kaspersky virus removal tool icon. Once initialization process is finished, you will see the KVRT screen as shown in the figure below.

Kaspersky virus removal tool main window

Click Change Parameters and set a check near all your drives. Press OK to close the Parameters window. Next click Start scan button . KVRT tool will begin scanning the whole PC to detect the Gycc ransomware. This procedure can take some time, so please be patient.

KVRT scanning

When Kaspersky virus removal tool has completed scanning, it will open the Scan Results like below.

KVRT scan report

Review the results once the utility has finished the system scan. If you think an entry should not be quarantined, then uncheck it. Otherwise, simply click on Continue to begin a cleaning process.

How to decrypt .Gycc files

To access the contents of files with the ‘.Gycc’ extension, a decryptor is required since they have been encrypted and cannot be unlocked by simply renaming or changing the file name. Fortunately, a Gycc File Decrypt Tool is available for free that can decrypt such files. Instructions on how to download and use this tool are provided below.

STOP Djvu decryptor

Gycc File Decrypt Tool (STOP Djvu decryptor)

To decrypt .Gycc files, use Gycc File Decrypt Tool

  • Download Gycc File Decrypt Tool from the following link.
    STOP Djvu decryptor
  • Scroll down to ‘New Djvu ransomware’ section.
  • Click the download link and save the ‘decrypt_STOPDjvu.exe’ file to your desktop.
  • Run decrypt_STOPDjvu.exe, read the license terms and instructions.
  • On the ‘Decryptor’ tab, using the ‘Add a folder’ button, add the directory or disk where the encrypted files are located.
  • Click the ‘Decrypt’ button.

The Gycc File Decrypt Tool is a free software that allows individuals to decrypt .Gycc files without any charges. Nonetheless, it is noteworthy that the decryptor can solely decrypt files that were encrypted using an offline key. If the files were encrypted with an online key, then the free decryptor will be useless. Despite this limitation, other methods are available to recover encrypted files in such situations, which are elaborated below.

Steps to determine the type of key used for file encryption

To decrypt files encrypted by Gycc File Decrypt Tool, it is important to know which key was used during encryption. You can find out the type of key used through two methods. Both methods are effective, but the second method is considered to be more accurate and therefore recommended.

personal id

Personal ID is highlighted here

Identifying the Type of Key Using the ‘_readme.txt’ File

  • Open the ‘_readme.txt’ file, which is the ransom demand message created by the Gycc ransomware.
  • Scroll down to the end of the file.
  • Look for a line of text that says ‘Your personal ID’.
  • Below this line, you should see a string of characters. This is your personal ID, which is unique to your computer and is used to generate the decryption key.

Identifying the Type of Key Using the ‘_readme.txt’ File

  • Open the C drive on your computer.
  • Open the ‘SystemID’ directory.
  • Look for the ‘PersonalID.txt’ file and open it./li>
  • This file contains a list of ‘Personal IDs’ that match the keys that the ransomware used to encrypt files./li>

The ‘Personal ID’ is not the actual key that was used to encrypt files, but rather an identifier that corresponds to it. If the ID ends with ‘t1’, the files were encrypted with an offline key, whereas if it does not, the Gycc virus used an online key. If you are unable to determine which key was used, you can request assistance by submitting a query here or in the comments section.

Gycc File Decrypt Tool : “No key for New Variant online ID”

No key for New Variant online ID

If, when you try to decrypt .Gycc files, Gycc File Decrypt Tool reports:

No key for New Variant online ID: *
Notice: this ID appears to be an online ID, decryption is impossible

It means that your files are encrypted with an ‘online key’ and their decryption is impossible, since only the vari authors have the key necessary for decryption. In this case, you need to use alternative methods listed below to restore the contents of encrypted files.

Gycc File Decrypt Tool : “No key for New Variant offline ID”

No key for New Variant offline ID

If, during decryption of .Gycc files, Gycc File Decrypt Tool reports:

No key for New Variant offline ID: *t1
Notice: this ID appears be an offline ID, decryption MAY be possible in the future.

It means the following: your files are encrypted with an ‘offline key’, but the key itself has not yet been obtained by security researchers, in this case, you need to be patient and wait a while, in addition, you can also use alternative ways for recovering encrypted data.

If for some reason you were unable to decrypt the encrypted files, then We recommend to follow the news on our Facebook or YouTube channels. So you ‘ll know right away that it ‘s possible to decrypt .Gycc files.

This video step-by-step guide will demonstrate How to use STOP Djvu decryptor to decrypt encrypted files.

How to restore .Gycc files

Thankfully, there are other ways to recover encrypted files that don’t require a decryption tool or key. These methods can be used by any ransomware victim, no matter which encryption key was used. It’s also worth noting that using these methods won’t interfere with the decryption process using the free Gycc File Decrypt Tool. However, before attempting to recover your files, it’s important to scan your computer for malware using free malware removal tools. It’s crucial to make sure that the ransomware has been completely removed before proceeding with file recovery.




Recover .Gycc files with ShadowExplorer

A tool called ShadowExplorer is available for free and can be used to restore files that have been encrypted by the Gycc crypto malware using the ‘Previous Versions’ feature of Microsoft Windows 11, 10, 8, 7, or Vista. This tool can restore photos, documents, and music from Shadow Copies without any cost.

Visit the following page to download the latest version of ShadowExplorer for MS Windows. Save it on your Microsoft Windows desktop or in any other place.

ShadowExplorer
ShadowExplorer
439542 downloads
Author: ShadowExplorer.com
Category: Security tools
Update: September 15, 2019

After the downloading process is done, open a directory in which you saved it. Right click to ShadowExplorer-0.9-portable and select Extract all. Follow the prompts. Next please open the ShadowExplorerPortable folder as shown on the screen below.

ShadowExplorer folder

Start the ShadowExplorer utility and then choose the disk (1) and the date (2) that you wish to recover the shadow copy of file(s) encrypted by the Gycc virus as displayed on the image below.

ShadowExplorer recover files encrypted by the Gycc crypto malware

Now navigate to the file or folder that you wish to recover. When ready right-click on it and click ‘Export’ button like below.

ShadowExplorer recover file

This video step-by-step guide will demonstrate How to recover encrypted files using Shadow Explorer.

Use PhotoRec to restore .Gycc files

One final option to restore encrypted files is through the use of data recovery tools. We suggest using a free tool called PhotoRec, which is equipped with all the essential functions needed to restore the contents of encrypted files. It has been proven to help many victims successfully recover their data, even when it appeared to be impossible.

Download PhotoRec on your Windows Desktop by clicking on the following link.

PhotoRec
PhotoRec
221230 downloads
Author: CGSecurity
Category: Security tools
Update: March 1, 2018

When downloading is done, open a directory in which you saved it. Right click to testdisk-7.0.win and choose Extract all. Follow the prompts. Next please open the testdisk-7.0 folder as shown in the following example.

testdisk photorec folder

Double click on qphotorec_win to run PhotoRec for MS Windows. It’ll open a screen as displayed in the figure below.

PhotoRec for windows

Select a drive to recover as shown on the screen below.

photorec select drive

You will see a list of available partitions. Select a partition that holds encrypted documents, photos and music as displayed on the screen below.

photorec select partition

Click File Formats button and choose file types to recover. You can to enable or disable the restore of certain file types. When this is done, click OK button.

PhotoRec file formats

Next, click Browse button to choose where restored photos, documents and music should be written, then click Search. We strongly recommend that you save the recovered files to an external drive.

photorec

Count of recovered files is updated in real time. All restored personal files are written in a folder that you have chosen on the previous step. You can to access the files even if the restore process is not finished.

When the recovery is finished, click on Quit button. Next, open the directory where restored personal files are stored. You will see a contents like below.

PhotoRec - result of restore

All recovered files are written in recup_dir.1, recup_dir.2 … sub-directories. If you’re looking for a specific file, then you can to sort your restored files by extension and/or date/time.

This video step-by-step guide will demonstrate How to recover encrypted files using PhotoRec.

How to protect your PC from Gycc ransomware

As mentioned earlier, Gycc ransomware is a dangerous malware that can cause significant damage to your computer and personal files. Therefore, it is essential to take measures to protect your PC from being infected with this ransomware. One such tool that can help you safeguard your system against Gycc ransomware is HitmanPro.Alert. In the following paragraphs, we will provide an overview of HitmanPro.Alert and how it can help protect your computer from Gycc ransomware.

HitmanPro.Alert install

Go to the link below to download the latest version of the software. Install it on your PC.

HitmanPro.Alert
HitmanPro.Alert
6866 downloads
Author: Sophos
Category: Security tools
Update: March 6, 2019

Once installed, open HitmanPro.Alert and click on the “Exploit Mitigations” tab. Enable all the options available, including “BadUSB Mitigation,” “CryptoGuard,” “Keystroke Encryption,” and “Process Protection.”

Click on the “Ransomware Protection” tab and enable all the options available, including “CryptoGuard,” “Keystroke Encryption,” and “Process Protection.”

It is important to keep HitmanPro.Alert up-to-date to ensure that you have the latest protection against new threats. Make sure to enable automatic updates in the settings.

To sum up

In conclusion, the Gycc ransomware is a serious threat that can encrypt all of your important files and demand a hefty ransom for their release. But don’t worry, there are several ways to protect yourself from this malware and recover your data without paying a ransom.

In this article, we have covered the essential aspects of Gycc ransomware, including what it is, how it spreads, and the symptoms and damage it causes. We have also provided tips on how to remove the virus from an infected computer and how to restore encrypted files. Additionally, we have shared a video guide on how to use the Emsisoft decryptor tool to restore .Gycc files for free.

It is crucial to take preventive measures to avoid ransomware attacks, such as avoiding suspicious links and email attachments, using reputable anti-virus software, and regularly backing up your data to an external source. Being aware of the latest trends in cybersecurity and keeping your operating system and software up-to-date are also essential to minimize the risk of a ransomware attack.

Remember, never pay the ransom to the attackers, as it only encourages their criminal activities. Instead, use the available tools and resources to restore your encrypted files and report the incident to the relevant authorities to help prevent future attacks. Stay safe and vigilant in the online world.

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Author: Myantispyware team

Myantispyware is an information security website created in 2004. Our content is written in collaboration with Cyber Security specialists, IT experts, under the direction of Patrik Holder and Valeri Tchmych, founders of Myantispyware.com.

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