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How to Remove SONAR.Cryptlk.AH!g1 from Your Computer? (Working Removal Guides)

Can’t edit your homepage due to it is automatically changed to SONAR.Cryptlk.AH!g1 without your permission?

Is it unavailable to delete SONAR.Cryptlk.AH!g1 from your browsers?

Do you want to learn how to totally get rid of SONAR.Cryptlk.AH!g1 from your computer?

Don’t worry. You could know the step-by-step virus removal guides in this article. Read and follow it.

What is SONAR.Cryptlk.AH!g1?

SONAR.Cryptlk.AH!g1 is coined as a nasty Trojan infection that infects the targeted PC secretly and immediately starts damaging the System performance and functionality. Every operations executed by users gets interrupted and doesn’t executes well. According to Microsoft Security Essentials, this vermin contains cryptoLocker technology which means that it is skilled to lock the important System files as well as files and folders present in the hard-disk. It will ask user to pay some ransom amount to decrypt the locked files but unfortunately this is just a spam. Approving to download the suggested files means that some harmful infections will also gets intruded along with the main program.

SONAR.Cryptlk.AH!g1 uses social engineering and Internet vulnerabilities to get it intruded in the third party System. The arbitrary files and several of its supported plug-ins and add-ons gets added without any permission. Several strange processes can be noticed in Windows task manager which consumes a lot of resources and ultimately leads to a total crash of the System. SONAR.Cryptlk.AH!g1 even allows third party to hijack the browser and redirect the webpage over commercial websites every now and them. Thus it is advised to execute the early steps to remove and maintain a smooth PC performance.

What is Trojan

Scenes of SONAR.Cryptlk.AH!g1

1)When your browser like Google Chrome, Firefox and Internet Explorer is opened, you will get a minimized blank tab instead of the homepage.
2)If you still keep the SONAR.Cryptlk.AH!g1 problem on your computer, it will infect legitimate running programs such as TFC.exe and svchost.exe.
3)Your computer will run more and more slowly since the infiltration of SONAR.Cryptlk.AH!g1.
4)System crash happens randomly and restarts constantly.
5)Some legitimate programs on the computer are disabled and many errors are claimed.

Effective methods to get rid of SONAR.Cryptlk.AH!g1:

Method one: Automatically remove SONAR.Cryptlk.AH!g1 easily with SpyHunter.(Download Removal Tool)
Method two: Manually remove SONAR.Cryptlk.AH!g1.

Detail instruction (please perform all the steps in correct order)

Method one: Automatically remove SONAR.Cryptlk.AH!g1 easily with SpyHunter.
It is highly recommended to download SpyHunter on your computer if you have difficulty in manually SONAR.Cryptlk.AH!g1. It is developed to help users to detect and delete the infection once found. Besides, it can repair the compromised system automatically and protect your PC against other potential threats in the future.

Step 1: Download SpyHunter on your computer with the following installation tutorials.


Step 2: The moment you accomplish the installation, run it and perform a full scan of your entire system to search for the rogue program.


Step 3: Please check the scan results and delete the rogue program from your computer.


Step 4: Don’t forget to restart your computer to apply all changes.

Method two: Manually remove SONAR.Cryptlk.AH!g1

(1) Use the safe mode
Reboot your computer, press F8 to enter Windows Advanced Options Menu before Windows is launched, use the arrow keys to highlight Safe Mode with Networking, press Enter.


Reference video on How to Remove Windows Virus in Safe mode

(2) Stop the running process of SONAR.Cryptlk.AH!g1 in Windows Task Manager.
Right click on the taskbar and select Start Task Manager (or press Ctrl+Shift+Esc), click Process tab, find and click on the related running process, and click End Process.


(3) Uninstall its related programs from your computer:
SONAR.Cryptlk.AH!g1 may bring some unwanted programs, you should uninstall them all.
Start>> Control Panel >> Programs >> Programs and Features >> Find out the unwanted programs and Uninstall it.


(4) Reset Folder Options to find the hidden files.
Start >> Control Panel>> Tools >> Folder options >> view >> Show hidden files, folders, and drives >>OK


Find the files here, and delete them:

C:\windows\system32\drivers\ random
%AllUsersProfile%\Application Data\.dll
%AllUsersProfile%\Application Data\.exe
(5) Open Registry Editor and remove Trojan registry entries.
Attention: Removing registry entries mistakenly will lead to system crash. If you are not sure, leave it to professional tool.
Start >> input regedit in the search box >>open Registry Editor >>find the related date and remove them.


HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “” = “%AppData%\.exe”
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run “” = “%AppData%\.exe”


What Prevention Measures to be Taken to Avoid SONAR.Cryptlk.AH!g1 Attacks

If today’s modern computer users gets a chance to rampant malware threats like SONAR.Cryptlk.AH!g1, then they have to be abreast and retroactive with the upcoming situations. Below are some best prevention measures you can take to avoid such harmful spyware threats.

Only open spam or unknown emails after scanning it with security software.
Downloads stuffs like software, game, media files etc only from trustworthy sites and companies.
You should disable autorun.
Do scheduled scans of your whole computer.
Increase the security of your networks like LAN, WiFi etc.

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