Xorist Ransomware [Updated]

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

Xorist ransomware removal instructions

What is Xorist?

Xorist (EnCiPhErEd) is a family of ransomware-type malware. After stealth system infiltration, ransomware from this family encrypts various files stored on the computer and adds one of the following extensions to each encrypted file: ....VeraCrypt_System_Error2019-You_need_to_make_payment_in_maxmin_24_hours_if_you_dont_the_decryptor_license_will_be_deleted_this_is_not_a_joke, .NEED-TO-MAKE-PAYMENT-OR-ALL-YOUR-FILLES-WILL-BE-DELETED-CRITICAL-SITUATION-URGENT-ATTENTION-24-HOURS-TO-PAY-OR-EVERYTHING-WILL-BE-PERMANENTLY-DELETED-FOREVER, .mbrcodes, ...DATA_IS_SAFE_YOU_NEED_TO_MAKE_THE_PAYMENT_IN_MAXIM_24_HOURS_OR_ALL_YOUR_IMPORTANT_FILES_WILL_BE_LOST_FOREVER_PLEASE_BE_REZONABLE_IS_NOT_A_JOKE_TIME_IS_LIMITED, .PrOtOnIs, ...Files-Frozen-NEED-TO-MAKE-PAYMENT-FOR-DECRYPTOR-OR-ALL-YOUR-FILES-WILL-BE-PERMANENLTY-DELETE, .cryptedx, .CerBerSysLocked0009881, ....error77002017111, .Blocked2.TaRoNiS, .Cerber_RansomWare@qq.com, .hello, .brb, .RusVon, .fast_decrypt_and_protect@tutanota.com, .xdata, .SaMsUnG, .zixer2, .antihacker2017, .error.errorfiles, .@EnCrYpTeD2016@, .pa2384259, .encoderpass, .fileiscryptedhard, .6FKR8d, .EnCiPhErEd, .73i87A, .p5tkjw, .PoAr2w.xwz or .ava. After encrypting the files, this ransomware creates a 'How to Decrypt Files.txt text file on the victim's desktop. The file contains a message stating that the files can only be restored by paying a ransom. The victim is then encouraged to contact cyber criminals by SMS and using a phone number provided. It is stated that victims have a limited number of attempts to send an SMS message with the specified text. This number diminishes each time the victim sends an SMS with text that does not conform to a pattern provided within the 'How to Decrypt Files.txt' file.

Ransomware from this family is created using Encoder Builder (purchased from the darkweb malware and exploit forums). This ransomware builder allows cyber criminals to input their ransom-demand message, choose their file encryption algorithm (XOR or TEA), choose the file types to be encrypted on victims' computers, etc. After a simple configuration, cyber criminals are presented with a ransomware executable file that they can distribute (through spam email messages, malwertising, etc.), and potentially make money from computer users who pay the ransom to recover their data. Fortunately, an Emsisoft employee, Fabian Wosar, managed to developed a tool capable of decrypting files compromised by Xorist ransomware. To receive this decryptor, contact Fabian Wosar via email: fw (at) emsisoft.com Note that the decryptor only works if you still have the malware file on your system. A copy can usually be found in your %temp% folder. The main reason why Fabian does not release the decrypt tool for public download is to prevent cyber criminals discovering weak points in their malware and updating it. Another way to decrypt files compromised by ransomware from this family is by using an XoristDecryptor created by security researchers from Kaspersky - you can download it here.

Screenshot of a message encouraging users to contact the developers of Xorist ransomware to decrypt their compromised data:

Xorist decrypt instructions

An updated variant of Xorist ransomware changes the victim's desktop to this wallpaper:

xorist updated variant wallpaper

Research shows that ransomware-type viruses are often very similar. As with the Xorist family, CTB-Locker, Locky, TeslaCrypt, and other similar malware also encrypts files and then makes ransom demands. There are just two main differences between these viruses - the encryption algorithm used and size of ransom. Ransomware is often distributed via infectious email attachments, P2P (peer to peer) networks (for example, Torrent), fake software updates, and trojans. Therefore, be cautious when opening attachments sent from unrecognized/suspicious emails and downloading files from untrusted sources. It is also important to keep all installed software up-to-date and use a legitimate anti-spyware or anti-virus suite. Be aware that paying the ransom does not guarantee that your files will ever be decrypted. Therefore, you should never attempt to pay the ransom or contact cyber criminals.

emsisoft xorist decrypterTo decrypt your files free, download Emsisoft Decrypter for Xorist ransomware (Download it HERE).

How to Decrypt Files.txt file:

xorist ransomware how to decrypt files txt

Text presented in How to Decrypt Files.txt file:

Encryption was produced using unique KEY generated for this computer.

To decrypted files, you need to obtain private key.
The single copy of the private key, with will allow you to decrypt the files, is locate on a secret server on the internet;
The server will destroy the key within 24 hours after encryption completed.
Payment have to be made in maxim 24 hours
To retrieve the private key, you need to pay 3 BITCOINS

Bitcoins have to be sent to this address: 1NJNG57hFPPcmSmFYbxKmL33uc5nLwYLCK

After you've sent the payment send us an email to : fast_decrypt_and_protect@tutanota.com with subject : ERROR-ID-(3BITCOINS)
If you are  not familiar with bitcoin you can buy it from here :

SITE : www.localbitcoin.com

After we confirm the payment , we send the private key so you can decrypt your system.

Here are the features of Encoder Builder:

Encrypting files using XOR and TEA;
Configuring masks of files search which are needed to process;
A pile of all sorts of different settings, such as the number of attempts to enter the password (see the screenshot);
Encoder was written in MASM32 but builder in Delphi 7;
The password for decryption is not stored in clear text in the build, but its MD5x5-hash is there;
A random offset from beginnings of files for each build for encryption;

Ransom demand message targeting PC users from Russia (КАК РАСШИФРОВАТЬ ФАЙЛЫ.txt file):

Внимание! Все Ваши файлы зашифрованы!
Чтобы восстановить свои файлы и получить к ним доступ,
свяжитесь с нами по email: nikosdd@yandex.ru

У вас есть 5 попыток ввода кода. При превышении этого
количества, все данные необратимо испортятся. Будьте
внимательны при вводе кода!

Screenshots of Encoder Builder (English and Russian versions):

Encoder Builder english version Encoder Builer russian version

Update 1 June, 2016 - Cyber criminals have updated this ransomware with a new ransom demand message (now presented in ‘READ TO DECRYPTIONS_.txt’) and a new extension that is added to the encrypted files (‘.fileiscryptedhard’). Here is a screenshot of the READ TO DECRYPTIONS_.txt file:

xorist new ransom demanding message READ-TO-DECRYPTIONS_.txt

Text presented within READ TO DECRYPTIONS_.txt file:

All your data files are crypted. To decrypt files and gain access to them, please send 0,5 Bitcoin to address - and email to fn1573917917ja@163.com proof (screen or TransID) of your payment. After receiving  the money, I will send you your password and decrypt instructions via email. You can also send a single cryptic files and I will send you the decryption for your peace of mind.

Update 13 July, 2016 - Cyber criminals have released a variant of Xorist ransomware that claims to be CERBER ransomware and adds the .cerber extension to encrypted files. Fortunately, Xorist decryptor developed by Fabian Wosar can decrypt victim’s files free of charge. You can download it here. Here is a screenshot of the HOW TO DECRYPT FILES.HTML file generated by this fake CERBER ransomware:

xorist fake cerber ransomware

Another variant of this ransomware appends the .EnCiPhErEd file extension to encrypted files and uses the locker@riseup.net contact email address:

locker@riseup.net ransomware pop-up

Update: 21 March, 2018 - Cyber criminals have released an updated variant of this ransomware. It adds the ".wxz" extension to encrypted files and presents its ransom demand message in the READ ME FOR DECRYPT.txt file. Screenshot of a pop-up message displayed after victims' files are encrypted:

xorist ransomware .wxz variant pop-up

Another pop-up window requesting a password that victims will supposedly receive after paying the ransom:

xorist enter password pop-up

Text in the ransom demand message(s):

All your files is encrypted using an unknown algorithm!
Do not try decrypt manualy!
You can destroy your files!!
To decrypt, please contact us BlackStarMafia@qq.com

Your personal ID: IN1O-2OYU-O98O-K1JJ

How to buy Bitcoins?
https://blockchain.info/ru/wallet/how-to-get-bitcoins

Screenshot of files encrypted by this variant of Xorist ransomware (.wxz extension):

xorist encrypted files .xwz extension

Xorist ransomware removal:

Instant automatic removal of Xorist 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 Xorist 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":

Step 2

Log in to the account infected with the Xorist 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 Xorist 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 Xorist 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 Xorist 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 Xorist, 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 Malwarebytes Anti-Ransomware, which artificially implant group policy objects into the registry to block rogue programs such as Xorist ransomware.)

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 Xorist 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 pcrisk.com 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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Removal Instructions in other languages
Malware activity

Global virus and spyware activity level today:

Medium threat activity
Medium

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

QR Code
Xorist virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Xorist virus on your mobile device.
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Platform: Windows

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