Simple method to remove CTBL File Extension from the PC

By | February 27, 2016


 CTBL File Extension Ransomware



Short Description

 CTBL File Extension Ransomware encrypts users  personal file and instruct them to pay an amount with  other  details by the use of ransom note.


 All affected files are renamed with additional * .CTBL File  Extension

Sources  Spam emails, Free bundled software, hacked/illegal websites


 Automatic Scanner Tool


What is CTBL File Extension? In actual CTBL File Extension is associated with the Xamine a NSCL spectrum display program for Microsoft Windows and other systems. Are you surprised? If it is an useful program extension then how all your saved files got this file extension and get encrypted? If this happened on your computer system then your computer has attacked and compromised by a very very nasty and well notorious Ransomware infection. CTBL file extension belongs to ransomware family CTB Locker. It is also known as several different names such as Win32/Critroni.A, Win32.Onion, TROJ_CRYPCTB.A, Cryptolocker.G, Curve-Tor-Bitcoin Locker etc. the latest version of this ransomware has also launched by cyber criminals with more powerful file encryption to assault and encrypt files on these operating system :

→ Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me Windows NT, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP, Windows 7, 8 and 10

When this ransomware virus attacks on your computer then you can use your computer for online operations and software application but can't open and view contents of saved encrypted files with CTBL File Extension. CTB Locker ransomware make some changes on your computer and also create some files on your hard drive as :

→ C:\\[random].exe.exe C:\Users\\AppData\Local\[random].exe (Vista/7/8) C:\Users\[User]\AppData\Local\[random].exe (Vista/7/8) C:\Users\[User]\AppData\Local\[random].exe (Vista/7/8) C:\Documents and Settings\[User]\Application Data\[random].exe (XP) C:\Documents and Settings\[User]\Local Application Data\[random].exe (XP)

If you are finding above mentioned files on your computer then it ensure that your computer has infected with CTB Locker and now it is very hard to decrypt files on your computer. With infiltration, the ransomware program runs a scan on all volumes, mapped network drive and external drive (if plugged in) for user's personal files as documents, images, audeo files, video files etc. and after that it encrypts files with ECC (Elliptic curve cryptography) with public and private keys. It can encrypt files belong to the list below :

→ mdf, mef, mrw, nef, nrw, odb, odm, odp, ods, odt, orf, p12, p7b, p7c, pdd, pef, pem, pfx, ppt, pptm, pptx, psd, pst, ptx, rtf, rw2, rwl, srf, srw, wb2, wpd, wps, xlk, xls, xlsb, xlsm, xlsx, r3d, raf, raw, 3fr, accdb, ai, arw, bay, cdr, cer, cr2, crt, crw, dbf, dcr, der, dng, doc, docm, docx, dwg, dxf, dxg, eps, erf, indd, jpe, jpg, kdc, mdb, etc.

CTBL File Extension or CTB Locker ransomware also create ransom note on every folder where it has encrypted files on your computer and also change your desktop back ground image as a reminder for extortion money. These ransom note can be a TEXT, HTML or an image file in following format.

→ %UserProfile%\My Documents\[RANDOM FILE NAME].html %UserProfile%\My Documents\AllFilesAreLocked[RANDOM FILE NAME].bmp %UserProfile%\My Documents\DecryptAllFiles[RANDOM FILE NAME].txt %Windir%\Tasks\[RANDOM FILE NAME].job

CTBL File Extension or CTB Locker ransom note contains instruction to about making payment of ransom amount. It ask users to use Tor network to make payment in Bitcoins. Generally it demands 0.2 BTC which is approximately $120 USD within a certain time and double the money after fixed span of time. However security experts never suggests to pay the ransom amount to the cyber criminals. If you have good practice to take backup on regular basis then you can use backup to restore files. The second option to recover files is use of Shadow Volume copies on your computer and third option is use of effective data recovery software. You can follow instructions on this page to remove CTBL File Extension or CTB Locker ransomware and recover encrypted files on your computer as a permanent solution.

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Manual Method To Remove CTBL File Extension From Windows XP:-

CTBL File Extension is a devastating threat which should not be allowed to stay for long time in the Windows PC. It can create unwanted problems for the users. If you are completely fed up with the existence of CTBL File Extension and looking for the best method to get rid of it then no need to panic. You are on perfect destination where you will find the simplest guidelines to remove the presence of CTBL File Extension permanently from the system. We are providing the manual steps to remove the worst impacts of CTBL File Extension which is mentioned below. You need to follow the instructions in step-by-step manner.

Step 1: Reboot your Windows PC with “Safe Mode Of Networking” to remove CTBL File Extension.

  • Click on Restart button from the Start menu.
  • Tap F8 key continuously once the system has been restarted.


  • Windows Advanced Option will appear, you need to choose Safe Mode With Networking option.

system reboot

  • Tap Enter key.

Step 2: Display the hidden files/folders of the Windows XP to detect suspicious files of CTBL File Extension.

  • Open Control Panel and click on Appearance and Personalization. Now, select the Folder options.
  • Click on “View” tab and check “Show hidden files and folders” option and uncheck “Hide protected operating system files”.

Folder option

  • Finally click on Apply button. It will help you to detect all the unknown files created by CTBL File Extension.

Step 3: Remove the fake entries created by CTBL File Extension from the Windows Registry Editor.

  • Tap Windows + R keys together to open the Run command prompt. Type “regedit” and click on OK button to open the registry editor.


  • Select the suspicious keys or entries which was created by the CTBL File Extension and click on Remove button.

Registry Settings

Note: You must know that Windows Registry stores the configuration settings and options. Its modification is very crucial and risky. If you delete any important key accidentally then it can leads the PC to critical situations or even permanent freezing is also possible. So, before deleting any entry, you must have knowledge about it otherwise you have to face more troubles apart from removing CTBL File Extension. If you are a non-technical user, then we advise you to avoid using the manual method.

Step 4: End the suspicious processes related to CTBL File Extension from the Task Manager.

  • To open the task manager, you need to tap ALT+CTRL+DEL keys together. Its editor will appear on your screen.
  • Click on Processes tab and you will detect lots of running process related to CTBL File Extension.


  • Select all the unwanted processes ofCTBL File Extension and click on End Task button which will be available on the bottom of the screen.

Step 5: Uninstall CTBL File Extension Completely From The Control Panel.

  • Open the Control Panel from the Start button.
  • Click on Add/Remove programs option from the list.

Control Panel

  • Look for CTBL File Extension in the Window and finally click on “Uninstall” button to get rid of it permanently.

Why To Choose CTBL File Extension Free Scanner?

From the above table, you will find that CTBL File Extension Free Scanner is one of the best software which provides several advanced features to the users such as Custom Scan & Backup, Network Sentry, Scheduled Scan, Spyware HelpDesk and many more. It will protect your system from further attacks of CTBL File Extension and other threats. It is a real-time anti-spyware software which is certified by West Coast Labs Checkmark Certification System which carries ability to keep your system completely safe and secure. It is designed by using advanced technology which can fix the problems of the PC related to malware or other hazardous threats. So, If you want to make your PC free from malignant threats then download the demo version of the software now to check its working efficiency and once you are satisfied with its performance then you can purchase its genuine version.

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Salient Key Features Of CTBL File Extension Free Scanner:-

Malware Protection: This software carries ability to detect, remove and block the presence of CTBL File Extension and other dangerous spyware, keyloggers, Trojans, virus, adware etc completely from the PC.

Compact OS: It helps the users to remove extremely hazardous rootkits and other malignant malwares like CTBL File Extension from the Windows PC.

One-On-One Customer Support: CTBL File Extension Free Scanner provides an interactive feature of Spyware HelpDesk. Here you will find complete details about any threat and its easiest removal instructions.

User-Friendly Interface: Due to its easy-to-use interface, even non-technical can easily understand how to use the software. It will instruct you by providing step-by-step instructions. So, it can be used by professionals as well as beginners.

Exclusions: With this feature, you can exclude a specific program or files from being detected by the software. It will be helpful to protect your personal files from deletion.

User Guide To Use CTBL File Extension Free Scanner:

Step 1: Click on “Scan Computer” to start the scanning process.

Scan Computer

Step 2: Custom Scan feature will help you to scan a particular location of the PC.

Custom Scan

Step 3: You can use System Guard to block the entrance of CTBL File Extension or related malicious entries.

System Guard

Step 4: Spyware Helpdesk feature will provide you complete details about CTBL File Extension and custom help fix to protect the PC.

Spyware Help desk

Step 5: It provides a feature of Network Sentry to block the notifications from unauthentic sites.

Network senetary

Step 6: You can scan your PC at pre-set time with the help of Scan Scheduler.

Scan Schedular

Remove CTBL File Extension: How To Choose Best Security software?

Once the system gets infected with CTBL File Extension, users start to look for best security software. This encourages the experts to design powerful software which can remove the ill-effects of the threats permanently. But when you proceed to search antivirus on the web, you will find huge collection. In reality, it is really a hectic task to select the best software for the PC. Every software comes with advanced features but it is not necessary that it will help you to protect your system completely. CTBL File Extension free scanner comes with the advanced features which will help you to detect and delete the threat permanently from the system. Due to its user-frinedly interface, even non-technical users are able to use its scanning process in a hassle free manner. So, you can download the free version to check its working efficiency and purchase the genuine version to remove the presence of malicious threats permanently from the PC.

Prevention Tips To Protect Windows PC From The Further Attacks Of CTBL File Extension:-

Once you remove the worst impact of CTBL File Extension from the system with the help of CTBL File Extension Free Scanner, you need to safe guard your PC from further attacks. It can be done if you follow few simple steps. Some of the important tips are mentioned below which will definitely help you to protect the Windows PC from CTBL File Extension and similar threats.

Update Firewall: You need to enable or update Firewall at certain interval of time. It will block all the incoming connection from unauthorized sources and doesn’t allow the CTBL File Extension to penetrate in the PC.

Social Media: Be careful while clicking on any unknown links on social media as it can contain CTBL File Extension.

Avoid Opening Spam Emails: CTBL File Extension mostly enters in the PC when user click on the attachment of spam emails. So, avoid accessing the mails if sender is unknown to you.

Freeware Downloads: Do not visit or download any free software from unreliable sites.

Modify Passwords: It is always recommended to the users to change their sensitive passwords at regular intervals of time. At the time of creating any passwords, use special characters, numbers, symbols etc. It will make your password strong which will not be identified with the third parties.

Removable Devices: One of the common way which is used by CTBL File Extension to sneak in the targeted system is Removable or secondary storage device. So, before you use any device, scan it properly and remove the threats if available.

Update The Windows Version: You must check for updates of Windows version of if it is available then install them as early as possible. It will block the entrance of CTBL File Extension as the latest version comes with more security features.

Turn On Safe Browsing Features: Different web browsers such as Mozilla Firefox, Internet Explorer and Google Chrome comes with advanced feature which will block the CTBL File Extension and helps the users in safe browsing.

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