Click on screenshot to zoom
Danger level 3
Type: Potentially Unwanted Application
Common infection symptoms:
  • Can't be uninstalled via Control Panel
  • Installs itself without permissions
  • Connects to the internet without permission


Aerojet is a browser extension for Chrome, and it is designed to show you advertisements. However, its developers have the audacity to claim that it was “designed to show you for better webpages.” You should remove this program ASAP because its ads might compromise your computer’s security. Our testing has shown that this program offers nothing of value to the end-user. Therefore, we have classified it as a potentially unwanted program (PUP) and the sooner you get rid of it the better. Still, if you want more information about it, then read this short description.

To avoid ambiguity, we want to point out that Aerojet was the name of an American rocket and missile manufacturer. This company no longer exists, but, apparently, some malware developer had the bright idea of using this name to call a potentially unwanted program. Note that the developer also shamelessly copied the logo of the company. However, this name is no longer associated with rockets or missiles but with advertising. This program’s website at claims that this program will help you see better content while you browse the web. It will not do anything of this sort as it is utterly useless.

Even though this application is currently being promoted on, you cannot download it from there since it does not feature this program’s installer. The information we have received suggests that this application is currently being disseminated via malicious software installers. You can encounter such installers on shady freeware hosting sites that bundle several applications and often include undesirable applications such as Aerojet to generate income. The problem is, however, that the installers are known to install this app without your knowledge or authorization. Hence, this application can be distributed using deceitful, malicious tactics. Now, let us take a look at its features.

Now, we argue that Aerojet is of no use to you but its developers insist that its purpose is to show you better web pages. This would explain the one of its features described in Terms of Service that say that “The Aerojet offer a number of features that may allow you to enter and perform Internet searches (“Search Applications”), reset your Internet browser's default homepage and/or new tab page, customize widgets, and much more." Hence, this application can replace your web browser’s homepage. Testing has shown that it is compatible with Google Chrome mainly, but some versions can be compatible with Microsoft Internet Explorer as well. The sample we have tested did not replace the homepage address, but that does not mean that that will always be the case. As far as advertising in concerned, another quote from the Terms of Service indicates that this application can “make available significant amounts of third party content, including links to other websites, articles, forums, ads and offers, and other multi-media content." Therefore, there is no doubt about the fact that this application’s real purpose is to make money because it will surely not present you with relevant content.

Testing has shown that while this program is set to install on Chrome and Internet Explorer as a browser extension, it is also true that it will, create additional helper files and registry keys to run on system startup. You need to wipe all of those junk files out of your computer so that its remnants do not connect to the Internet and send age or collect information about you. You will find the bulk of its files in %PROGRAMFILES(x86)%\Aerojet or %PROGRAMFILES%\Aerojet, depending on whether your PC has the 32-bit or 64-bit version of Microsoft Windows. Also, it is set to create four text files in %ALLUSERSPROFILE%\Application Data in Windows XP or %ALLUSERSPROFILE% in all post-XP Windows versions. It is also configured to inject a registry key at HKLM\SOFTWARE\Aerojet.

You can uninstall this application via Control Panel and the uninstaller will delete the two executable files in %PROGRAMFILES(x86)%\Aerojet, but will leave the rest of the files and registry key intact. Therefore, you have to remove those files manually or use an anti-malware tool to do it for you. Please follow our instructions located below on how to get rid of all of the files manually.

Uninstall Aerojet via Control Panel

Windows 10 & 8.1/8

  1. Right-click the Start menu/screen.
  2. Go to Programs and Features.
  3. Locate the program and right-click on it.
  4. Click the Uninstall button.

Windows Vista/Windows 7

  1. Open the Start menu.
  2. Click Control Panel.
  3. Select Uninstall a program.
  4. Locate application and right-click it.
  5. Uninstall the infection.

Windows XP

  1. Open the Start menu.
  2. Click Control Panel.
  3. Select Add or Remove Programs.
  4. Find the software and click Uninstall.

Remove Aerojet from the browser

Microsoft Internet Explorer

  1. Press Alt+X.
  2. Click Manage Add-ons.
  3. Click Toolbars and Extensions.
  4. Find and remove the unwanted extension.
  5. Click Close.

Mozilla Firefox

  1. Press Ctrl+Shift+A.
  2. Click Extensions.
  3. Find the add-on.
  4. Click the Remove button.

Delete the junk files

  1. Press Windows+E.
  2. In the File Explorer’s address box, enter %ALLUSERSPROFILE% or %ALLUSERSPROFILE%\Application Data (for Win XP)
  3. Locate AerojetVersion.txt, all_data.txt, country.txt, and frequency_data.txt
  4. Right-click them and click Delete.
  5. Then, enter %PROGRAMFILES(x86)% or %PROGRAMFILES%
  6. Delete the Aerojet folder.

Delete the registry keys

  1. Press Windows+R.
  2. Enter regedit in the dialog box and click OK.
  3. Delete the following keys.
    • HKLM\SOFTWARE\WOW6432Node\Google\Chrome\Extensions\gighmmpiobklfepjocnamgkkbiglidom
    • HKLM\SOFTWARE\Google\Chrome\Extensions\gighmmpiobklfepjocnamgkkbiglidom
    • HKLM\SOFTWARE\Aerojet
  4. Go to KLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
  5. Find Aerojet and delete it.
  6. Press Ctrl+F.
  7. Enter the following the following CLSIDs.
    • {07209614-92A0-43F5-BCD7-3AAAD7F2090F}
    • {4EE93DCC-400F-4689-9EC3-25D4F134878B}
  8. Delete them.
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