How to uninstall SDfghjkl ransomware from your operating system?

Also Known As: SDfghjkl virus
Distribution: Low
Damage level: Severe

SDfghjkl ransomware removal instructions

What is SDfghjkl?

Discovered by Raby, SDfghjkl is a malicious program, belonging to the Paradise ransomware family. This malware operates by encrypting the data of infected systems - in order to demand a ransom to be paid for the decryption tools/software. During the encryption process, all files are renamed according to this pattern: "_      _{}SDfghjkl". For example, a file originally titled "1.jpg" would appear as "1.jpg_      _{}SDfghjkl", and so on for all of the compromised files. After this process is complete, a text file - "Instructions with your files.txt" is created on the desktop and a pop-up window is displayed. SDfghjkl is a decryptable ransomware; files encrypted by it - can be decrypted with a tool developed by Emsisoft (user guide and download link).

The text file ("Instructions with your files.txt") informs victims that their data has been encrypted by the Paradise Ransomware team and instructs them to establish contact via the email addresses provided below. The ransom note in the pop-up window is much more detailed. It clarifies that to recover their files, users are to purchase the appropriate decryption tools/software from the cyber criminals behind SDfghjkl malware. The size of the payment is not mentioned, it will supposedly depend on how quickly victims initiate communication with the criminals. The ransom will have to be paid in Bitcoin cryptocurrency (the pop-up contains links detailing how to and from where to obtain Bitcoins). After this payment is made, users are promised to be sent the necessary tools to decrypt their data. Prior to paying, up to three files can be sent to test decryption. These files must not exceed 1 MB in size and/or contain valuable information. The note ends with warnings. Victims are instructed not to rename the encrypted files and/or attempt decryption with third party decryption software - as that may lead to permanent data loss. Additionally, the message states that running an antivirus or uninstalling SDfghjkl - will render the files undecryptable (i.e. they will be beyond repair). Decryption with the decryption keys of other victims will not work either, as the encryption keys are unique. In most cases of ransomware infections, without the interference of individuals responsible - decryption is impossible. Fortunately, files encrypted by SDfghjkl can be decrypted with Emsisoft's decryption tool. Even in instances when there are no decryption software available, it is expressly advised against meeting the ransom demands. Cyber criminals are not to be trusted and often, despite paying - users do not received the promised recovery tools/software. It is true that removing a ransomware from the operating system will not restore already affected data, however removal will prevent it from further encryptions. The only solution, if the files cannot be decrypted - is recovering them from a backup. Provided if one was made before the infection and was stored in a separate location.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

SDfghjkl decrypt instructions (pop-up)

BadutClowns TeamOnixRazor are examples of other ransomware. Malicious programs of this type are designed to encrypt data and demand payment for the decryption. There are two key differences between them - the cryptographic algorithm they use (symmetric or asymmetric) and the ransom size. The latter tend to range between three and four digits (in USD). Digital currencies (e.g. cryptocurrencies, pre-paid vouchers, etc.) are typically used for the payments, as transactions of them are difficult/impossible to trace. To ensure data safety, it is recommended to keep backups in unplugged storage devices and/or remote servers.

How did ransomware infect my computer?

Ransomware and malware primarily spread through spam campaigns, trojans, illegal activation ("cracking") tools, fake updates and untrustworthy download sources. Spam campaigns are used to send deceptive emails with infectious files attached to (or linked inside) them - on a mass scale. Virulent files can be in various formats (e.g. Microsoft Office and PDF documents, archive and executable files, JavaScript, etc.) and when they are opened - the infection is triggered (i.e. download/installation of malware). Trojan is a type of malicious software, capable of causing chain infections. Illegal activation tools ("cracks") can download/install malicious programs - instead of activating licensed product. Rather than install the promised updates, fake updaters abuse the flaws of outdated programs and/or simply install malware. Download channels like: unofficial and free file-hosting sites, P2P sharing networks (BitTorrent, eMule, Gnutella, etc.) and other third party downloaders - are deemed to be untrustworthy, due to offering suspect and/or malicious software.

Threat Summary:
Name SDfghjkl virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension _      _{}SDfghjk
Ransom Demanding Message Instructions with your files.txt and text presented in the pop-up window.
Cyber Criminal Contact and
Detection Names Avast (Win32:Filecoder-BK [Trj]), BitDefender (Generic.Ransom.DCRTR.985535A4), ESET-NOD32 (A Variant Of Win32/Filecoder.Paradise.B), Kaspersky (HEUR:Trojan.Win32.Generic), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Additional Information SDfghjkl is a decryptable ransomware - Emsisoft's decryption tool.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate SDfghjkl virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

It is advised not to open suspicious and/or irrelevant emails, especially any attachments (or links) present in such. Since opening an infectious file - will initiate the infection. All downloads should be done from official and verified sources. The same extends to software activation and updating - they should only be done with tools/functions provided by legitimate developers. Illegal activation ("cracking") tools and third party updaters should not be used, as they can cause malware infections. It is crucial to device health - to have a dependable anti-virus/anti-spyware suite installed and kept updated. Furthermore, these programs are to be used for regular system scans and removal of detected/potential threats. If your computer is already infected with SDfghjkl, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in SDfghjkl ransomware's pop-up window:

All your files have been encrypted!
Paradise Ransomware
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail
You PC id:
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files.
Free decryption as guarantee
Before payment you can send us 1-3 files for free decryption.
Please note that files must NOT contain valuable information.
The file size should not exceed 1MB.
As evidence, we can decrypt one file
How to obtain Bitcoins
The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price.
Also you can find other places to buy Bitcoins and beginners guide here:
Do not rename encrypted files
Do not try to decrypt your data using third party software, it may cause permanent data loss
You are guaranteed to get the decryptor after payment
As evidence, we can decrypt one file
Do not attempt to use the antivirus or uninstall the program
This will lead to your data loss and unrecoverable
Decoders of other users is not suitable to decrypt your files - encryption key is unique

Screenshot of SDfghjkl's text file ("Instructions with your files.txt"):

SDfghjkl ransomware text file (Instructions with your files.txt)

Text presented in this file:

All your files have been encrypted contact us via the e-mail listed below.
e-mail: or e-mail:

Paradise Ransomware team.

Screenshot of files encrypted by SDfghjkl ("_      _{}SDfghjkl" extension):

Files encrypted by SDfghjkl ransomware (_      _{}SDfghjkl extension)

Appearance of the Emsisoft's decryption tool:

SDfghjkl ransomware appearance of Emsisoft decryption tool

SDfghjkl ransomware removal:

Instant automatic removal of SDfghjkl virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of SDfghjkl virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the SDfghjkl virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the SDfghjkl ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining SDfghjkl ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of SDfghjkl are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by SDfghjkl, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as SDfghjkl ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove SDfghjkl ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
SDfghjkl virus QR code
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