How to remove "Cuiall Apps" unwanted application

What kind of application is Cuiall Apps?

Our researchers discovered this application named "Cuiall Apps" while analyzing a rogue installation setup. Upon examination, we determined that this piece of software is a PUA (Potentially Unwanted Application). It is designed to infiltrate the Legion Loader malware into systems. Cuiall Apps was also installed alongside the fake "Save to Google Drive" browser extension.

Cuiall Apps overview

The "Cuiall Apps" PUA acts as a dropper for (i.e., introduces into systems) the Legion Loader malware. As the naming implies, this malicious program is a loader – it infiltrates into devices additional malware. Legion Loader has been observed causing the following types of infections – trojan, ransomware, data stealer, and cryptocurrency miner.

This loader has also infiltrated malicious Google Chrome browser extensions. These extensions were designed to track users' browsing activities, steal email contents, and modify browsers into HTTP proxies in order to abuse Internet resources (proxyware).

At the time of research, Cuiall Apps was installed together with the fake "Save to Google Drive" browser extension. Among its many capabilities, this extension can alter browsers' appearances and modus operandi, collect sensitive browsing data, steal and change clipboard contents, and perform other malicious activities.

It is noteworthy that installers like the one carrying Cuiall Apps are commonly bundled (packed together) with suspicious, unwanted, and even dangerous software.

In summary, the presence of programs like Cuiall Apps on devices can lead to multiple system infections, severe privacy issues, financial losses, and even identity theft.

Threat Summary:

Name	"Cuiall Apps" potentially unwanted application
Threat Type	PUP (Potentially Unwanted Program), PUA (Potentially Unwanted Application), Dropper.
Detection Names (installer)	ESET-NOD32 (Win32/TrojanDropper.Agent.TAL), Full List Of Detections (VirusTotal)
Payload	Legion Loader
Symptoms	A program that you do not recall installing suddenly appeared on your computer. Seeing advertisements not originating from the sites you are browsing. Intrusive pop-up ads. Rogue redirects. Decreased Internet browsing speed.
Distribution Methods	Deceptive pop-up ads, free software installers (bundling).
Related Domains	getpremiumapp[.]monster
Damage	System infections, monetary loss, privacy issues, slow computer performance.
Malware Removal (Windows)	To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. ▼ Download Combo Cleaner To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Potentially unwanted application examples

Kiicvoq Apps, Tiaoq App, Utoaqk App, Kotalq App, and Keep Awake are just some of our newest articles on PUAs. Software within this classification usually has harmful functionalities, such as collecting vulnerable information, displaying malicious ads (adware), or modifying browsers to produce redirects (browser hijackers).

Unwanted applications tend to look ordinary and harmless. They can offer a wide variety of useful features, which are rarely operational. Remember that even if a piece of software functions exactly as described by its promotional material – that does not prove its legitimacy or safety.

How did potentially unwanted applications install on my computer?

We acquired the installer containing Cuiall Apps from a scam page – getpremiumapp[.]monster – using a download-themed lure. All kinds of deceptive webpages promote PUAs, and they are primarily accessed via redirects caused by sites using rogue advertising networks, intrusive ads, spam browser notifications, mistyped URLs, and adware.

Our researchers discovered the webpage in question through a redirect from a Torrenting website that employs rogue advertising networks.

Other prevalent promotional techniques include "bundling" (packing ordinary program installation setups with unwanted/malicious additions), dubious download channels (e.g., freeware and third-party sites, Peer-to-Peer sharing networks, etc.), and stealthy downloads/installations by intrusive ads (triggered once clicked).

How to avoid installation of potentially unwanted applications?

We highly recommend researching software before downloading or purchasing it. Additionally, all downloads must be made from official and verified sources. When installing, it is important to read terms, inspect possible options, use the "Custom/Advanced" settings, and opt out of supplementary apps, extensions, features, tools, etc.

We advise vigilance when browsing since fraudulent and dangerous online content usually appears genuine and harmless. For example, while intrusive advertisements may look innocuous – they redirect to highly questionable websites (e.g., scam-promoting, gambling, pornography, adult dating, etc.).

In case of continuous encounters with such adverts/redirects, check the device and immediately remove all suspect applications and browser extensions/plug-ins. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate them.

Rogue website (getpremiumapp[.]monster) promoting Cuiall Apps application:

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▼ DOWNLOAD Combo Cleaner By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Quick menu:

• What is Cuiall Apps?
• STEP 1. Uninstall deceptive applications using Control Panel.
• STEP 2. Remove rogue extensions from Google Chrome.
• STEP 3. Remove potentially unwanted plug-ins from Mozilla Firefox.
• STEP 4. Remove rogue extensions from Safari.
• STEP 5. Remove rogue plug-ins from Microsoft Edge.

Removal of potentially unwanted applications:

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 "Cuiall Apps" and other suspicious/recently-installed applications, select these entries and click "Uninstall" or "Remove".

After uninstalling the potentially unwanted application, scan your computer for any remaining unwanted components or possible malware infections. To scan your computer, use recommended malware removal software.

Remove rogue extensions from Internet browsers:

At time of research, Cuiall Apps was installed together with the fake "Save to Google Drive" browser extension. Note that unwanted applications are often installed alongside adware, browser hijackers, and other suspicious software. If you experience unwanted ads or redirects when browsing the Internet, continue with the removal guide below.

Video showing how to remove potentially unwanted browser add-ons:

Remove malicious extensions from Google Chrome:

Click the Chrome menu icon (at the top right corner of Google Chrome), select "More Tools" and click "Extensions". Locate all recently-installed suspicious extensions, select these entries and click "Remove".

Optional method:

If you continue to have problems with removal of the "cuiall apps" potentially 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 plugins 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 "cuiall apps" potentially 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 "cuiall apps" potentially 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 is the purpose of an unwanted application?

The purpose of unwanted applications is to generate revenue for their developers/publishers through nefarious means. For example, these apps may cause chain infections, endorse content (via advertisements, redirects, etc.), promote dubious in-app purchases, collect/sell private information, and so forth.

Are unwanted applications legal?

Typically, unwanted applications are considered legal due to their End User License Agreements (EULAs) informing users of the software's behavior.

Is having Cuiall Apps installed on my computer dangerous?

Cuiall Apps infiltrates the Legion Loader malware into systems, which in turn can cause further infections (e.g., trojans, ransomware, cryptominers, etc.). Cuiall Apps can also be installed alongside other suspicious/harmful software (e.g., fake "Save to Google Drive" extension, etc.). Hence, this unwanted app is associated with multiple system infections, serious privacy issues, financial losses, and identity theft.

Will Combo Cleaner help me remove Cuiall Apps unwanted application?

Combo Cleaner can detect and eliminate all manner of threats, including unwanted/malicious apps. Remember that manual removal (performed without security programs) might not be ideal. After an application has been manually removed – file remnants can stay hidden within the system, continue running, and causing issues. It must be stressed that performing a complete system scan is essential to detecting sophisticated malware, as it tends to hide deep within systems.

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