What is KTC Ransomware Virus?
KTC cryptovirus belongs to the ransomware type of malicious software. Programs like the KTC virus blackmail online users to pay ransom fees in order to get their files back. Unfortunately, files locked by this threat remain permanently damaged for an unspecified period of time. Valuable files marked with the extension .KTC are locked by a sophisticated cypher algorithm. The decryption of .KTC files is possible with the usage of a tool possessed by hackers. Instructions on how victims can obtain this tool are given by the content of the file RESTORE_FILES_INFO.txt.
If you are one of its victims then keep reading this article to learn more about KTC ransomware and find effective ways for its complete removal.
KTC Summary
| Name | KTC |
| Type | Ransomware, Cryptovirus |
| Malicious Extension | .KTC |
| Short Description | A data locker ransomware that utilizes strong cihper algorithm to encrypt personal files stored on the infected computer. It demands a ransom for a decryption solution. |
| Symptoms | Important files are locked and renamed completely. Their names are renamed with the extension .KTC. Corrupted files remain unusable until their code is reverted back to original state. |
| Ransom Message | RESTORE_FILES_INFO.txt |
| Distribution Method | Spam Emails, Email Attachments, Corrupted Websites, Software Installers |
| Detection Tool |
See If Your System Has Been Affected by malware
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Malware Removal Tool
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How Does KTC Ransomware Infect PCs?
Oftentimes, computer systems get infected by ransomware threats like KTC via malicious attachments. The attachments are typically contained in various spam email messages that pretend to be sent by trustworthy sources. Such email messages also feature links sometimes. The links may also be related to pages that run malicious scripts to download the ransomware on the machine.
What Does KTC Ransomware Do?
Like most malware of this kind, KTC virus is likely to store associated files and objects in some of the following system folders:
- %Roaming%
- %Windows%
- %AppData%
- %Local%
- %Temp%
The ransomware runs a lot of processes during the attack. Its goal is to make the detection of its activities very hard. It can even hook up to a running app and misuse its appearance in order to obtain administrative rights. Afterwards, it becomes able to manipulate system functionalities and pass through a few attack phases without any vivid traits.
An information-gathering operation may run in the background too. The KTC virus can gather some personally identifiable details and provide them to cybercriminals. Data records can then be used for crimes such as identity theft and financial abuse.
Still, the main goal of KTC ransomware is to try to force you to pay a ransom fee for the recovery of locked .KTC files. That’s why the KTC virus drops its ransom message that extorts a ransom fee. You as a victim of this ransomware may find and open the file RESTORE_FILES_INFO.txt that will inform you the following:
——————
| What happened? |
——————Your network was ATTACKED, your computers and servers were LOCKED,
Your private data was DOWNLOADED:
– Contracts
– Customers data
– Finance
– HR
– Databases
– And more other…———————-
| What does it mean? |
———————-It means that soon mass media, your partners and clients WILL KNOW about your PROBLEM.
————————–
| How it can be avoided? |
————————–In order to avoid this issue,
you are to COME IN TOUCH WITH US no later than within 3 DAYS and conclude the data recovery and breach fixing AGREEMENT.——————————————-
| What if I do not contact you in 3 days? |
——————————————-If you do not contact us in the next 3 DAYS we will begin DATA publication.
We will post information about hacking of your company on our twitter hxxps://twitter.com/RobinHoodLeaks or tublr hxxps://robinhoodleaks.tumblr.com/—————————–
| I can handle it by myself |
—————————–It is your RIGHT, but in this case all your data will be published for public USAGE.
——————————-
| I do not fear your threats! |
——————————-That is not the threat, but the algorithm of our actions.
If you have hundreds of millions of UNWANTED dollars, there is nothing to FEAR for you.
That is the EXACT AMOUNT of money you will spend for recovery and payouts because of PUBLICATION.
You are exposing yourself to huge penalties with lawsuits and government if we both don’t find an agreement.
We have seen it before cases with multi million costs in fines and lawsuits,
not to mention the company reputation and losing clients trust and the medias calling non-stop for answers.————————–
| You have convinced me! |
————————–Then you need to CONTACT US, there is few ways to DO that.
—Secure method—
a) Download a qTOX client: hxxps://tox.chat/download.html
b) Install the qTOX client and register account
c) Add our qTOX ID: 671263E7BC06103C77146A5ABB802A63F53A42B4C4766329A5F04D2660C99A3611635CC36B3A
d) Write us extension of your encrypted files .KTCOur LIVE SUPPORT is ready to ASSIST YOU on this chat.
—————————————-
| What will I get in case of agreement |
—————————————-You WILL GET full DECRYPTION of your machines in the network, DELETION your data from our servers,
RECOMMENDATIONS for securing your network perimeter.And the FULL CONFIDENTIALITY ABOUT INCIDENT.
——————————————–
Followig those instructions is highly inadvisable because cybercriminals may just take your money and then skip assistin you with the decryption of locked files.
.KTC Virus Files
Sadly, encrypted files will remain completely inaccessible until you find a way to restore them. The virus eliminates both the file’s name and authentic extension. For example the file photo.jpg will appear with the following name once encrypted by the KTC ransomware – photo.jpg.KTC.
If you want to prevent being tricked by cybercriminals once again, you should avoid paying the demanded ransom. There is no guarantee provided that they can send you back a working decryption tool for your .KTC files.
Remove KTC Ransomware Virus and Attempt to Restore Files
The so-called KTC is a threat with a highly complex code that disrupts system security in order to encrypt personal files. Hence the infected system could be used in a secure manner again only after the complete removal of all malicious files and objects created by the ransomware. That’s why it is recommendable that all steps presented in the ransomware removal guide below should be completed. Beware that manual ransomware removal is suitable for more experienced computer users. If you don’t feel comfortable with the manual steps navigate to the automatic part of the guide.
Gergana Ivanova
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
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Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.
About the KTC Research
The content we publish on SensorsTechForum.com, this KTC how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the KTC ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
References
1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware
How to Remove KTC from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove KTC
1. Hold Windows Key + R.
2. The "Run" Window will appear. In it, type "msconfig" and click OK.
3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
4. When prompted, click on "Restart" to go into Safe Mode.
5. You can recognise Safe Mode by the words written on the corners of your screen.
Step 2: Uninstall KTC and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.
2. In the field type in "appwiz.cpl" and press ENTER.
3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.
Step 3: Clean any registries, created by KTC on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by KTC there. This can happen by following the steps underneath:
1. Open the Run Window again, type "regedit" and click OK.
2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.
3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for KTC with SpyHunter Anti-Malware Tool
1. Click on the "Download" button to proceed to SpyHunter's download page.
2. After you have installed SpyHunter, wait for it to update automatically.
3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.
4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.
Video Guide for Automatic and Fast Removal
Step 5 (Optional): Try to Restore Files Encrypted by KTC.
Ransomware infections and KTC aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
1. Download the recommended Data Recovery software by clicking on the link underneath:
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)
Get rid of KTC from Mac OS X.
Step 1: Uninstall KTC and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
2. Find Activity Monitor and double-click it:
3. In the Activity Monitor look for any suspicious processes, belonging or related to KTC:
4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.
5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to KTC. If you find it, right-click on the app and select “Move to Trash
”.
6. Select Accounts, after which click on the Login Items preference.
Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to KTC. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.
7. Remove any left-over files that might be related to this threat manually by following the sub-steps below:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove KTC via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
1: Click on "Go" and Then "Go to Folder" as shown underneath:
2: Type in "/Library/LauchAgents/" and click Ok:
3: Delete all of the virus files that have similar or the same name as KTC. If you believe there is no such file, do not delete anything.
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 3 (Optional): Try to Restore Files Encrypted by KTC.
Ransomware infections and KTC aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
1. Download the recommended Data Recovery software by clicking on the link underneath:
Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
KTC FAQ
What is KTC ransomware and how does it work?
KTC is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
How does KTC ransomware infect my computer?
Via several ways.KTC Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.
This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.
Another way, you may become a victim of KTC is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to open .KTC files?
You can't. At this point the .KTC files are encrypted. You can only open them once they are decrypted.
Decryptor did not decrypt my data. What now?
Do not panic and backup the files. If a decryptor did not decrypt your .KTC files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by KTC ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.
How Do I restore ".KTC" files (Other Methods)?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .KTC files.
These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How do I get rid of KTC ransomware virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate KTC ransomware and then remove it without causing any additional harm to your important .KTC files.
Also, keep in mind that viruses like KTC ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.
What to Do If nothing works?
There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:
- Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
- Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
- Also, check if some of the files that were encrypted it can be re-downloaded from the web.
- Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
- You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.
More tips you can find on our forums, where you can also asks any questions about your ransomware problem.
How to Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
- Germany - Offizielles Portal der deutschen Polizei
- United States - IC3 Internet Crime Complaint Centre
- United Kingdom - Action Fraud Police
- France - Ministère de l'Intérieur
- Italy - Polizia Di Stato
- Spain - Policía Nacional
- Netherlands - Politie
- Poland - Policja
- Portugal - Polícia Judiciária
- Greece - Cyber Crime Unit (Hellenic Police)
- India - Mumbai Police - CyberCrime Investigation Cell
- Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
