How to remove Cumulonimbus malicious application
Written by Tomas Meskauskas on
What kind of application is Cumulonimbus?
Cumulonimbus has been identified as a malicious extension, exhibiting multiple capabilities that pose significant concerns. This application can activate the "Managed by your organization" feature in Chrome and Edge browsers, oversee apps and themes within browsers, and access various types of information.
Cumulonimbus in detail
The "Managed by your organization" feature typically indicates that an external entity, such as an IT administrator or a software application, has taken control of certain settings in a web browser. This level of management allows for centralized control over policies, configurations, and security settings, often in corporate or institutional environments.
However, the appearance of this feature without user intent or knowledge, as in the case of Cumulonimbus, can be a sign of potential security risks and privacy concerns. Furthermore, Cumulonimbus can manipulate the visual appearance of the browser by managing themes.
It also gains control over installed applications and extensions, potentially allowing new elements or functionalities to be added without the user's explicit consent. Thus, Cumulonimbus can impact not only the user interface but also the overall functionality and security of the browser environment.
Another reason not to trust Cumulonimbus is that it can read and modify data on all visited pages. It means that the app may collect sensitive information (including passwords and credit card details) and present users with misleading content. Such actions can lead to identity theft, monetary loss, and other issues.
Also, Cumulonimbus is disseminated using a malicious installer bundled with an unwanted web browser called Chromstera. There is a possibility that the installer carrying Cumulonimbus may include other software, such as adware or browser hijackers.
| Name | Cumulonimbus unwanted application |
| Threat Type | Malicious Extension |
| Detection Names (Installer) | Gridinsoft (PUP.Win32.Chromnius.dg!c), Sophos (Dragon Boss Solutions (PUA)), 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
In summary, Cumulonimbus raises significant concerns due to its intrusive management capabilities, potentially impacting the user interface, overall functionality, and security of the browser environment. Given these risks, immediate removal of Cumulonimbus is strongly advised to safeguard against potential privacy breaches and the exploitation of sensitive information.
Examples of applications similar to Cumulonimbus are CanisLupus, MagnoliaGrandiflora, and TaraxacumOfficinale.
How did unwanted software install on my computer?
Cumulonimbus is distributed through a dubious website housing a malicious installer. Users incorporate Cumulonimbus into their browsers after finalizing the installation process. Alternative methods frequently employed for the distribution of such applications encompass deceptive advertisements, third-party app stores, peer-to-peer (P2P) networks, software bundles, etc.
Installers present advanced or custom options or checkboxes when undesired applications are bundled with other software. Users inadvertently agree to install or add extra applications when they complete installations without modifying the aforementioned settings or deselecting checkboxes.
How to avoid installation of unwanted applications?
Be vigilant throughout the installation processes, using the provided settings to manage added components. Untick checkboxes or change options permitting additional software installations. Rely on official app stores or reliable websites for downloads and assess legitimacy through user reviews.
Consistently review and oversee browser extensions and applications, eliminating unfamiliar or suspicious ones. Incorporating trusted antivirus and anti-malware tools can also offer an extra safeguard against harmful 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.
Website hosting the installer containing Cumulonimbus malicious extension:
Cumulonimbus on Edge:
Cumulonimbus app information:
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 Cumulonimbus?
- STEP 1. Uninstall rogue applications using Control Panel.
- STEP 2. Remove rogue plug-ins from Google Chrome.
- STEP 3. Remove unwanted 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 apps 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 "Cumulonimbus" or other suspicious extensions, select these entries and click "Remove".
Optional method:
If you continue to have problems with removal of the cumulonimbus 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 cumulonimbus 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 cumulonimbus 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 Cumulonimbus cause?
Cumulonimbus, being a malicious application with various capabilities, presents risks such as unauthorized access to data, potential privacy violations, and a compromised online experience.
What does Cumulonimbus do?
After Cumulonimbus is added, the app can activate the "Managed by your organization" setting in Chrome and Edge browsers. Additionally, it gains the ability to read diverse data and oversee themes and extensions.
How do Cumulonimbus developers generate revenue?
Cumulonimbus developers may generate revenue through strategies like endorsing products, websites, or services. Also, they may sell gathered data to third parties.
Will Combo Cleaner remove Cumulonimbus?
Combo Cleaner will scan your computer and eliminate all installed rogue applications. It is important to note that manual removal may not be successful, as the files of the removed program may stay in the system.
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