Remove K0stia Ransomware : Restore .K0stia Encrypted Files

K0stia Ransomware

What do you know about K0stia Ransomware?

K0stia Ransomware virus is also known as a Kostya Ransomware which is a Russian-named ransomware threat which hails from the same family as previous-released viruses Mischa and Petya. Though the real relationship between K0stia and the these threats is not yet defined, but we can't turn down the possibility that this malware is yet another malicious work of the Russian cyber hackers. It is interesting that K0stia Ransomware is country-oriented and infects the systems located in the Czech Republic.

The victims of this ransomware are asked to pay the ransom amount of 300 CZK which is approximately equal to $12.22, so we must admit that it is one of the most cheapest ransomware-type virus. However, no matter how much ransom money does it ask from the victims, it works like any other nasty ransomware. According to the security analysts, K0stia Ransomware relies on the AES-256 encryption key which it uses for encrypting the victims files. As soon as the malware enters the computer, it starts scanning PC's hard disk and other locations for the popular file extensions and then encrypts them with “.K0stia” file extension.

Although, the good news is that the threat only infects the C: drive, while the D: partition usually remains untouched by this ransomware. Nevertheless, if users keep the most of their vital documents and files on the C: drive, then the consequences of this ransomware attack may be disastrous. However, it is especially important to delete K0stia Ransomware from the infected machine as early as possible, because, you may lose your system files forever. Remember that, it is no less essential to use the reputable antivirus program for the ransomware removal.

What does K0stia Ransomware Virus do?

It might seem quite unusual that the hackers behind this threat only ask for 300 CZK which is around 12.22 USD for the decryption of the infected PC files. The ransom money is ridiculously low compared to what other dangerous ransomware creators typically demand. Nonetheless, this doesn't mean that after you pay the fee, you system files will be returned. It is most likely that this strategy is only a way to get the victimized users involved and gather more money.

Besides, the cyber criminals threaten to increase the ransom money to 2000 CZK which is around 81.50 USD, if the victims fails to comply with initial requirements. Finally, within 24 hours after the K0stia Ransomware attack, you may lose access to your important and personal data completely if you fail to transfer 300 dollars-worth PaySafeCard to the cyber crooks. The payment can be made through the web or sent directly to the crooks’ email id i.e.

If the K0stia Ransomware threat is curbed before the time runs out, then you may still have the ability to protect your computer files. Though, there is currently no way of decrypting the files and documents to which the malware has already pinned its unique .k0stya file extension, there still might be a chance to restore these files by using the Windows Previous Versions feature or few data recovery utilities. All of these methods are completely described in more detail below the post. But before you start anything, make sure that you take care of the K0stia Ransomware removal first.


How to Remove K0stia Ransomware Completely

K0stia Ransomware is one of the most dangerous and notorious trojan threat which is quite very troublemaker and contribute lots of problems for the innocent PC users. This threat is now disbursed all across and has targeted many of the windows computer to put its harmful effects. Although, K0stia Ransomware might not seen to be very dangerous and so mostly people avoid its presence. Nevertheless, it is a very dreadful trojan infection that sneaks into computer very silently and quickly manages to hide its identity without letting anyone know about its presence. K0stia Ransomware execute command prompt to continue its evil tasks and copies file name to prevents itself from being detected. Now, there must be in your mind how such type of malware slips into PC.

Below is the list of negative impact of K0stia Ransomware is given that would let you know how dangerous and infectious K0stia Ransomware is.

  1. K0stia Ransomware often copies genuine file and prevent itself from being detected.

  2. It changes file name stored in the PC with malicious extensions.

  3. You might notice certain changes into the system default settings.

  4. It is a troublemaker threat which creates problems when you reboot your computer.

  5. Its worst impact might leads to unusual shut down of Computer

  6. It is responsible for slower system performance speed.

K0stia Ransomware brings your privacy at high risk and allows web hackers to use you personal details for illegal purpose which might lead you to become identity theft victim.

A. K0stia Ransomware Manual Removal

How to Change the System Folder Settings to view hidden files

On Windows 7 | Vista

Windows Logo button is to be selected and then you need to Open Windows Explorer.

Click on Organize selecting Folder and Search Options.

Now Click on View Tab and select Show hidden files and folders Option to view K0stia Ransomware related files.


Click on OK to Apply

On Windows 8

Select on Windows + E keys in combination on the keyboard.

Click on View Tab option

win 8

File name Extensions along with hidden items is to be checked

Step 2: Delete K0stia Ransomware Related Files in Hidden Folders as given

  • %Temp%\[adware name]
  • %AppData%\[adware name]
  • %LocalAppData%\[adware name]
  • %LocalAppData%\[adware name].exe
  • %CommonAppData%\[adware name]
  • %AllUsersProfile%random.exe

Step 3 : Remove K0stia Ransomware Related Registry Files on Windows

First, Open Registry Editor

On Windows 7| Vista

Click on Start Button

Select on Run Button

Type regedit

Finally Click on OK button

On Windows 8 Computer

Click on Win [Window Key] + R in Combination on Keyboard

Type regedit.exe in dialog box and press OK.


Confirm OK to open the registry editor.

Look for K0stia Ransomware related files and entries created in Win Registry.

Note: This step is only suitable for users having Technical Skills, if you delete any other entries other than K0stia Ransomware, it will permanently damage your PC.

B. K0stia Ransomware Removal from Windows OS

How to Uninstall K0stia Ransomware related program on PC

on Windows 10

1. On Win 10 Screen, Click on Start Menu and Select All apps.

  1. this will show entire list of apps installed on Win 10, Find K0stia Ransomware or any other suspicious program from the list. Right Click on the Selected item to uninstall it.

On Win 7 | Vista

  1. Select and Click on the Start Button and Click on Control Panel using Start Menu.

control panel2. You need to Select Uninstall Program under the Program Category in Control Panel.

uninstall program


3. Using the Window, Program and Features option, select Installed on to view all the recently installed programs, Now uninstall K0stia Ransomware or any other suspicious programs.

From window 8 PC

1. Press Windows key + I simultaneously , then open Setting Bar, click Control Panel to open it

2. Under Programs category, select Uninstall a program

3. Search K0stia Ransomware program in Program and Features window, then click on Uninstall


Step 2:- Uninstall K0stia Ransomware toolbar, add-on, plug-in and extension from browser IE/Microsoft Edge/Firefox/Google Chrome

From Chrome Browser

1. On Chrome browser, select menu


2. Select Advanced Settings option


3. Click on Extension


4. To remove K0stia Ransomware extension, click on Trash icon

5. Select the Remove option in dialog box

From Microsoft Edge Browser

( Microsoft Edge does not support extension, now you have to just reset the search engine and homepage of Edge browser)

1. Set homepage on Edge browser to remove K0stia Ransomware

  1. On address bar click More(..), and then select Settings option

Edge-Browser-Settings3. View Advanced Settings for specific page, to set homepage to Open with option

advance-settings-edge4. To set your own homepage click on Custom, the then type URL of your own homepage


2. To remove K0stia Ransomware set default Search Engine

  • On address bar click More(..), and then select Settings option
  • select the View advanced settings option
  • Select “Search in the address bar with”, then enter the search engine by clicking on <Add new> option, then click on Add as default


  •  Custom option is to be selected, enter the URL of the homepage to be set as


From IE Browser

1. To open Manage add-ons on your IE browser, click on Tools button


2. Select Toolbars and Extensions, them make a selection of K0stia Ransomware to remove it


3. Now click on Reset button to remove  K0stia Ransomware add-ons


From Firefox browser

1. To open Add-on Manager tab, select Menu button, and then click on Add-ons


2. Click Extensions

FF Ext

3. Select Remove or Disable button


How to Remove K0stia Ransomware Automatically

Well, in the fast growing technology and day by day increasing malicious activities of cyber criminals, it is necessary for every computer user to protect their PC from K0stia Ransomware. You must own a best removal tool which can provide safety and security to your windows machine. K0stia Ransomware Free Scanner is one of the best tool which is capable to detect K0stia Ransomware or any malware completely from compromised machine. However you need to purchase its licensed version to delete K0stia Ransomware completely.

User Guide : Automatic K0stia Ransomware Free Scanner

Step 1 Download the software and now install it on your computer. Click on “Scan Computer” to detect presence of K0stia Ransomware and its harmful traces.


Step 2 Scan in progress can be viewed


Step 3 Use System Guard feature to block entry of K0stia Ransomware and its infectious files.


Step 4 HelpDesk is an additional feature which is can sort out all your troubles usually you face when PC is infected with K0stia Ransomware


Step 5 K0stia Ransomware Free Scanner has Network Sentry feature which helps to block modification done through Internet connectivity on your computer system.

Network-senetary (1)

Step 6 Enable Scan Scheduler feature on your computer to perform scanning at pre set time like daily, weekly or monthly.