How to remove Wiki ransomware from operating systems

Also Known As: Wiki virus
Distribution: Moderate
Damage level: Severe

Wiki ransomware removal instructions

What is Wiki?

Discovered by Jakub Kroustek and belonging to the Crysis/Dharma malware family, Wiki is malicious software classified as ransomware. It is designed to encrypt data and keep it locked until a ransom is paid (i.e., decryption software/tool is purchased). When this malicious program encrypts data, it renames files with a unique ID number (generated for each victim), the developer's email address, and the ".wiki" extension. For example, "1.jpg" might be renamed to a filename such as "1.jpg.id-1E857D00.[bitlocker@foxmail.com ].wiki". After this process is complete, Wiki stores a file named "FILES ENCRYPTED.txt" on the desktop and displays a pop-up window.

The message in the text file informs victims that their data has been locked and, if they wish to recover it, they must contact the cyber criminals behind Wiki ransomware by sending an email. The pop-up contains a more detailed ransom message stating that the email must contain the unique ID number in the subject/title. Alternative email addresses are provided should users not receive any response within 24 hours. The victims must pay the ransom to receive decryption tools. The size of this ransom will depend on how quickly they contact the criminals. As 'proof' of their ability to restore the encrypted data, the developers of this malicious software offer to decrypt one file free of charge. The file should be no larger than 1 MB (non-archived) and contain no 'valuable information' (databases, backups, large excel sheets, and similar). The message also gives instructions about how to obtain Bitcoin cryptocurrency in which the ransom must be paid. Furthermore, users are advised not to rename encrypted files or attempt manual decryption (using third party software), as this will result in permanent data loss. There are no free programs able to "crack" Wiki's encryption. Ransomware-type infections use strong encryption, which usually cannot be broken without the involvement of the cyber criminals who encoded the data. Regardless, you are advised against communicating with these people or meeting any ransom demands. Despite paying, victims often receive none of the tools necessary to decypt their files. Therefore, their data remains encrypted and useless. The only viable solution is to restore files from a backup, if one was made prior to the attack and stored separately.

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

Wiki decrypt instructions

Most ransomware programs share certain common traits. Maze 2019MedusaLocker, and Deal are some examples of infections akin to Wiki. All ransomware encrypts files and demands payment for decryption. There are some differences: cryptographic algorithm used (symmetric or asymmetric) and size of ransom. Ransoms are usually between a three-digit and four-digit sum (in USD). Cyber criminals prefer digital currencies (e.g. cryptocurrencies, pre-paid vouchers, etc.), as these transactions are difficult/impossible to trace. Decryption without the involvement of these criminals is only possible when the ransomware is still in development and/or has flaws/bugs. To protect data from encryption/damaging attacks, maintain backups on remote servers and/or unplugged storage devices. These are also liable to damage, so store several backup copies in different locations.

How did ransomware infect my computer?

Ransomware and other malicious software is mainly spread through trojans, spam campaigns, untrustworthy download channels, fake software updaters, and "cracking" tools. Trojans are malicious programs designed to cause chain infections (i.e., they download/install additional malware). Spam campaigns are implemented to send out thousands of deceptive emails containing infectious attachments (or web-links leading to them). These emails are usually marked as "official", "important", "urgent", or otherwise highlighted as priority mail. The attachments, which cause the infection, can be in various file formats (e.g. Microsoft Office and PDF documents, executable and archive files, JavaScript, etc.). P2P sharing networks (BitTorrent, eMule, Gnutella, etc.), unofficial and free file-hosting websites, third party downloaders and similar channels are untrustworthy. These dubious downloaders sources offer malicious software and/or bundled content. Fake program updaters misuse flaws/weaknesses present in outdated software and/or install malware rather than the updates. Illegal activation tools ("cracks") infect systems similarly: they download/install malware rather than activating licensed products.

Threat Summary:
Name Wiki virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .wiki (this ransomware also appends filenames with the victim's unique ID and developer's email address).
Ransom Demanding Message Pop-up window (HTML application), FILES ENCRYPTED.txt
Cyber Criminal Contact bitlocker@foxmail.com
Detection Names Avast (FileRepMalware), BitDefender (Trojan.Ransomware.GenericKDS.32600106), DrWeb (Trojan.Inject3.29015), ESET-NOD32 (A Variant Of Generik.FYASUBF), 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.
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.
Removal

To eliminate Wiki 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

Suspicious and irrelevant emails should not be opened, especially if received from unknown senders/addresses. Attachments found in this type of email should never be executed, run, or otherwise opened, as that will cause infection (trigger download/installation of malware). Use only official and verified download sources. Installed software should be kept updated using tool/functions provided by legitimate developers. Programs should also be activated properly without the use of illegal "cracking" tools. Have a reputable anti-virus/anti-spyware suite installed and kept up-to-date. This software can perform regular system scans and remove detected threats. If your computer is already infected with Wiki, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Wiki ransomware pop-up window:

All your files have been encrypted!
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 bitlocker@foxmail.com
Write this ID in the title of your message 1E857D00
In case of no answer in 24 hours write us to theese e-mails:bitlocker@foxmail.com
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 paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.)
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.
hxxps://localbitcoins.com/buy_bitcoins
Also you can find other places to buy Bitcoins and beginners guide here:
hxxp://www.coindesk.com/information/how-can-i-buy-bitcoins/
Attention!
Do not rename encrypted files.
Do not try to decrypt your data using third party software, it may cause permanent data loss.
Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Screenshot of Wiki text file ("FILES ENCRYPTED.txt"):

Wiki text file

Text presented in this file:

all your data has been locked us
You want to return?
Write email bitlocker@foxmail.com 

Screenshot of files encrypted by Wiki (".wiki" extension):

Files encrypted by Wiki

Wiki ransomware removal:

Instant automatic removal of Wiki 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 Wiki 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 Wiki 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 Wiki 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 Wiki 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 Wiki 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 Wiki, 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 Wiki 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 Wiki 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 malware activity level today:

Medium threat activity

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

QR Code
Wiki 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 Wiki virus on your mobile device.
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Platform: Windows

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