How to remove Nimbostratus malicious extension
Written by Tomas Meskauskas on
What kind of application is Nimbostratus?
After inspecting the Nimbostratus application in the aftermath of running a malicious installer, we found that the app has the capability to enable the "Managed by your organization" feature. Moreover, Nimbostratus can oversee themes and extensions and gain access to diverse sets of data. Thus, users should avoid adding this app to their browsers.
Nimbostratus in detail
Nimbostratus, having the capability to activate the "Managed by your organization" feature, signifies its potential to control settings and configurations in the user's browser (Chrome and Edge). Originally designed for organizational device management within a corporate network, this feature becomes a security concern when misused by a malicious app.
Exploiting this feature can result in unauthorized access to critical system functions, enabling the app to modify settings and threaten the security and privacy of the targeted browsers. Also, Nimbostratus can read and modify data on all websites. The app can interfere with the normal functioning of websites and extract sensitive information, further heightening the risks associated with its presence.
Moreover, Nimbostratus extends its influence by managing themes, apps, and extensions within a user's browser. This capability allows the malicious app to control and manipulate the visual appearance, functionalities, and additional features integrated into the browser.
By exerting authority over themes, apps, and extensions, Nimbostratus can potentially introduce or alter elements in a way that compromises the user experience and, more critically, jeopardizes the security of the browsing environment.
Finally, Nimbostratus is distributed via an installer with additional software, such as the Chromstera browser. This installer may include more unwanted apps, such as browser hijackers or adware.
Name | Nimbostratus unwanted application |
Threat Type | Malicious Extension |
Detection Names (Installer) | Gridinsoft (PUP.Win32.Chromnius.dg!c), Sophos (Dragon Boss Solutions (PUA)), Tencent (Trojan.Win32.FakeInst_l.16001054), Full List (VirusTotal) |
Symptoms | The "Managed by your organization" feature is activated in Chrome and Edge browser, Chromstera browser is installed, your computer becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites. |
Distribution methods | Dubious websites, malicious installers, deceptive pop-up ads, free software installers (bundling), torrent file downloads. |
Damage | Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information. |
Malware Removal (Windows) | To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
Conclusion
Overall, Nimbostratus can lead to a range of issues, including unauthorized access to sensitive data, compromised browsing security, and disruptions to the normal functioning of browser components. Users are advised to be vigilant and implement necessary precautions to mitigate these risks. It is important to note that there are numerous apps similar to Nimbostratus.
Some examples are GaleocerdoCuvier, Cumulonimbus, and CanisLupus.
How did unwanted software install on my computer?
One of the ways Nimbostratus can be accidentally added to web browsers is through a malicious installer obtained from an unofficial website. It is also common for apps like Nimbostratus to be distributed using malicious advertisements, P2P networks, third-party downloaders and app stores, and software bundles.
Users inadvertently contribute to unwanted installations through software bundles by often overlooking or hastily proceeding through installation processes. Typically, users unintentionally agree to add or install unwanted apps when they finish installations without changing "Advanced", "Custom", or similar settings.
How to avoid installation of unwanted applications?
Download software only from reputable sources, such as official websites or trusted app stores, to reduce the risk of bundled software from unverified sources. During installation, read each step, paying attention to checkboxes and settings that may indicate the inclusion of additional programs.
Do not agree to receive notifications from shady websites. Avoid interacting with suspicious pop-ups, ads, and links, especially when visiting questionable pages. Regularly update and utilize reputable security software. If your computer is already infected with rogue applications, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.
A website hosting the installer that includes Nimbostratus malicious extension:
Nimbostratus application information:
Nimbostratus on Edge browser:
Instant automatic malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:
- What is Nimbostratus?
- STEP 1. Uninstall unwanted applications using Control Panel.
- STEP 2. Remove rogue plug-ins from Google Chrome.
- STEP 3. Remove dubious extensions from Mozilla Firefox.
- STEP 4. Remove malicious extensions from Safari.
- STEP 5. Remove rogue plug-ins from Microsoft Edge.
Unwanted software removal:
Windows 11 users:
Right-click on the Start icon, select Apps and Features. In the opened window search for the application you want to uninstall, after locating it, click on the three vertical dots and select Uninstall.
Windows 10 users:
Right-click in the lower left corner of the screen, in the Quick Access Menu select Control Panel. In the opened window choose Programs and Features.
Windows 7 users:
Click Start (Windows Logo at the bottom left corner of your desktop), choose Control Panel. Locate Programs and click Uninstall a program.
macOS (OSX) users:
Click Finder, in the opened screen select Applications. Drag the app from the Applications folder to the Trash (located in your Dock), then right click the Trash icon and select Empty Trash.
In the uninstall programs window, look for any unwanted applications, select these entries and click "Uninstall" or "Remove".
After uninstalling the unwanted application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.
Remove unwanted applications from Internet browsers:
Video showing how to remove unwanted browser add-ons:
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon (at the top right corner of Google Chrome), select "Extensions" and click "Manage Extensions". Locate "Nimbostratus" or other suspicious extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the nimbostratus unwanted application, reset your Google Chrome browser settings. Click the Chrome menu icon (at the top right corner of Google Chrome) and select Settings. Scroll down to the bottom of the screen. Click the Advanced… link.
After scrolling to the bottom of the screen, click the Reset (Restore settings to their original defaults) button.
In the opened window, confirm that you wish to reset Google Chrome settings to default by clicking the Reset button.
Remove malicious plug-ins from Mozilla Firefox:
Click the Firefox menu (at the top right corner of the main window), select "Add-ons and themes". Click "Extensions", in the opened window locate all recently-installed suspicious extensions, click on the three dots and then click "Remove".
Optional method:
Computer users who have problems with nimbostratus unwanted application removal can reset their Mozilla Firefox settings.
Open Mozilla Firefox, at the top right corner of the main window, click the Firefox menu, in the opened menu, click Help.
Select Troubleshooting Information.
In the opened window, click the Refresh Firefox button.
In the opened window, confirm that you wish to reset Mozilla Firefox settings to default by clicking the Refresh Firefox button.
Remove malicious extensions from Safari:
Make sure your Safari browser is active, click Safari menu, and select Preferences....
In the opened window click Extensions, locate any recently installed suspicious extension, select it and click Uninstall.
Optional method:
Make sure your Safari browser is active and click on Safari menu. From the drop down menu select Clear History and Website Data...
In the opened window select all history and click the Clear History button.
Remove malicious extensions from Microsoft Edge:
Click the Edge menu icon (at the upper-right corner of Microsoft Edge), select "Extensions". Locate all recently-installed suspicious browser add-ons and click "Remove" below their names.
Optional method:
If you continue to have problems with removal of the nimbostratus unwanted application, reset your Microsoft Edge browser settings. Click the Edge menu icon (at the top right corner of Microsoft Edge) and select Settings.
In the opened settings menu select Reset settings.
Select Restore settings to their default values. In the opened window, confirm that you wish to reset Microsoft Edge settings to default by clicking the Reset button.
- If this did not help, follow these alternative instructions explaining how to reset the Microsoft Edge browser.
Summary:
Commonly, adware or potentially unwanted applications infiltrate Internet browsers through free software downloads. Note that the safest source for downloading free software is via developers' websites only. To avoid installation of adware, be very attentive when downloading and installing free software. When installing previously-downloaded free programs, choose the custom or advanced installation options – this step will reveal any potentially unwanted applications listed for installation together with your chosen free program.
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Frequently Asked Questions (FAQ)
What harm can Nimbostratus cause?
This malicious application can lead to unauthorized access to critical system functions, compromise the confidentiality of user data, introduce security vulnerabilities, and disrupt the normal functioning of browser components, posing a range of threats to users.
What does Nimbostratus do?
Nimbostratus is a malicious application that can activate the "Managed by your organization" feature, read and modify data on all websites, and manage themes, apps, and extensions within a browser.
How do Nimbostratus developers generate revenue?
They might exploit the compromised systems to display malicious ads, collect sensitive user information, or participate in affiliate marketing programs by promoting certain products or services.
Will Combo Cleaner remove Nimbostratus?
Combo Cleaner scans and removes all undesired applications from your computer. It is important to note that manual removal may not be foolproof, as remnants of files could persist in the system even after deleting the software. Thus, it is recommended to remove unwanted software using a specialized app.
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