SONAR.Heur.RGC!g549: Brief Description

Malware researchers have recently discovered a new Trojan virus named SONAR.Heur.RGC!g549. It often gains silent intrusion in the computer without being acknowledged by the user and causes severe damages onto the compromised machine. Soon after sneaking into the PC, it conducts a series of unethical deeds in the background and wreaks havoc onto the system. This perilous virus mainly targets Windows based computer systems and is capable of posing negative values to almost all versions of Windows OS including the latest Win 10. It adds lots of vicious codes to the registry editors and changes its default settings so that it could activate itself every time the PC is started.

SONAR.Heur.RGC!g549 makes the installed security programs ineffective and opens backdoors for other Online threats. It may easily bring more perilous infections inside including adware, rootkits, worms, spyware and even dreadful Ransomware and turn the system into a malware-hub. According to security experts, once your device gets infected with this notorious Trojan, then it is just a matter of time when a dangerous crypto-virus strikes the machine and locks all your crucial files and data. If that happens, nothing can be worse than that. It helps remote hackers to access the computer and execute all the evil deeds inside for their personal benefits.

As soon as this hazardous Trojan enters the machine, it starts following your each and every browsing move and gathers crucial data. Later on, crooks use those stuffs for advertisements campaign. After that, your computer screen is flooded with a number of annoying ads and pop-ups all over the day which ruins your web sessions badly. SONAR.Heur.RGC!g549 is a big threat for your privacy too. It steals all your personal and credential data such as login ids, passwords, credit card number, bank account and other financial details and exposes those stuffs to hackers for bad intentions. It may redirect you to very dangerous web portals that are filled with malicious stuffs and end up with dropping more infections and viruses inside.

This hazardous Trojan mostly intrudes the machine via software bundling method. It is attached with the freeware programs as an additional tool and manages to settle down inside during the installation of main software. But, it can be avoided by choosing Custom or Advanced option instead of the default one. Here you can deselect the unwanted tools if there is any and select only your desired program. This nasty hijacker takes up huge memory space and consumes enormous amount of CPU resources which results in poor system performance. It prevents many installed applications from functioning. In order to avoid all these threats from being occurred, you must eliminate SONAR.Heur.RGC!g549 from the machine quickly.


Steps To Remove SONAR.Heur.RGC!g549 From Compromised Computer

The infections like SONAR.Heur.RGC!g549 or similar ones or those belong to other malware category are all designed to generate with only ill intention to make money for its developers who make use of any technique to force you down. However, most of the security experts associated with different security associations say this is not much harmful browser and can be removed from an infected computer by getting through some steps. If you follow the steps in the same order and with full attention as described in the procedures below, we hope you can also free up your PC easily. It’s recommended to take a hard copy of the guidelines on paper or get another computer to assist you following the steps without any hassles.

Step 1:Track and remove SONAR.Heur.RGC!g549 from computer’s processes from task manager.

Step 2:Locate and delete the definition of this program from startup files, registry files, and host files.

Step 3:Removal of SONAR.Heur.RGC!g549 from all reputed browsers.

Step 4:Delete SONAR.Heur.RGC!g549 with an automatic solution(The Safest and most recommended method)

Step 1: Track and remove SONAR.Heur.RGC!g549 from computer’s processes from task manager.

  • Launch the Task Manager by pressing a key combination CTRL+SHIFT+ESC simultaneously.

  • Review the suspicious processes and note down its file location on computer.end-malicious-process

  • Terminate the processes now.

  • Open the “Run” command box and enter the noted down location to open in file explorer.

  • Delete the file permanently.

Step 2: Locate and delete the definition of this program from startup files, registry files, and host files

  • Launch the file explorer or any folder from my computer.

  • Click on “View” option in the above Menu (Older Windows version’s user may go to control panel to open “Folder options”)

  • Choose “Folder and Search Options”

  • Click over “View” tab.

  • Scroll down to find “Show hidden files and folders” option, and check it in the check box.

  • Find “Hide protected operating system files” and uncheck it. (This will allow you to see super-hidden files in any folder to identify the suspicious ones.)

  • Click “Apply” then “Ok”

Cleaning SONAR.Heur.RGC!g549 definitions from Windows registry

  • To open Windows registry editor, click Win+R combination.

  • Type “regedit” ro simply copy and paste in the command line

  • Press Ok.

  • Navigate to below mentioned registry files depending on your OS versions (32 bit or 64 bit) and delete the files.

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] or

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] or


  • Now Launch the Windows explorer and navigate to %appdata% to find and delete suspicios executable files from there, and close the window.

Fixing Hosts file to block the unwanted redirections on all active browsers

  • Open windows explorer and navigate to Windows directory.

  • Go to System32/drivers/etc/host

  • open the host file and notice it. If the system is hijacked by the infection you would see several IP definitions at the bottom.

  • Select those IP addresses and delete them. (Don’t delete the local host entry)

  • Save and close the file, and exit the explorer window.

Step 3: Removal of SONAR.Heur.RGC!g549 from all reputed browsers (Steps included for Chrome, Firefox & Internet Explorer)

Google Chrome

  • Launch Chrome browser.

  • Click over the main menu icon and select Tools or More Tools, then Extensions.

  • Scroll down to notice the list of installed extensions to find suspicious one and click the bin option beside it.

  • Click remove button to confirm the deletion.

  • Finally, Reset the Chrome settings to default leaving nothing behind.

Mozilla Firefox

  • Launch the Firefox and press CTRL+SHIFT+A to open extension Window.

  • Look for the SONAR.Heur.RGC!g549 extension and Disable it.

  • Now go to Help section.

  • Click over Troubleshooting information then hit the Reset button.

  • Confirm the act to reset the browser.

Internet Explorer

  • Simply, open the browser and click thee Gear Icon on the upper right corner.

  • Navigate to Internet options and click it.

  • Now, navigate to Toolbars and Extensions, to see the list of installed addons to find unwanted one.

  • Disable or delete the selected extensions permanently.

  • In order to reset the Ie, click over Advanced tab, and click Reset.

  • Press OK button to confirm.

Cleaning the browser’s shortcuts on the computer is also recommended in most of the cases and should be accomplished for all installed browsers, for which the steps are:

  • Select the browser short-cut, and right click on it.

  • Navigate the properties and click it.

  • In the opened window, find the target option, and remove the argument for SONAR.Heur.RGC!g549 .

  • Apply the changes.

Step 4: Remove SONAR.Heur.RGC!g549 with an automatic solution

Although the removal method through manual instructions are effective and proven to provide the best results, still some of the victimized users may fail to get the results as per their desire. This can happen due to lack of technical consent to access most of the administrative utilities as used in above guidelines. If you also got stuck through the instructions or seeking the safest method which needs not any high end manual steps, then opting an automatic solution could be the best solution. You just need to do a few instructions taken in practice to install and scan the system deeply that will fix all issues and remove SONAR.Heur.RGC!g549 completely. The required steps to do so is all here mentioned.


Easily remove all online trending threats from your PC safely at just single click.

Step 1:Download and install SONAR.Heur.RGC!g549 removal tool and install it on your computer (Note:this is a free scanner that will detect the present malwares on your system only. In order to fix the threats completely, you would have to buy its full version to remove the threats.)

Step 1

Step 2: After the installation is finished, run the scanner and you will see the two options as depicted in the image below. Click on “Scan Computer Now” button.

Step 2

Step 3: In this step, you would see the scanning process bar with detection of found threats and its short description along-with its categorized thumbnail.

Step 3

Step 4: Lastly, the scanner finishes scanning the computer to show full list of detected threats on computer. Just click on “Fix Threats” button to complete the removal that hardly takes a few moments depending upon the nature and severity level of the malware items.

Step 4