Do not trust Install-plug-s3.com or other similar websites

Also Known As: install-plug-s3.com pop-up
Type: Mac Virus
Distribution: Low
Damage level: Medium

How to remove apps downloaded from install-plug-s3[.]com on Mac computers

What is install-plug-s3[.]com?

install-plug-s3[.]com is designed by scammers who seek to deceive unsuspecting visitors into installing potentially unwanted applications (PUAs), such as browser hijackers, adware or other apps of this kind, through a fake Adobe Flash Player installer. In some cases, these websites are used to spread malicious programs including ransomware, Trojans, and other malware. Neither install-plug-s3[.]com nor other similar websites (there are many ) can be trusted. Typically, they are opened through other untrustworthy websites, deceptive advertisements or PUAs already installed on browsers and/or operating systems. People generally arrive at sites such as install-plug-s3[.]com unintentionally.

install-plug-s3[.]com scam

When visited, install-plug-s3[.]com displays a pop-up window suggesting that the installed version of Adobe Flash Player is out of date and that there is a new version available for download. In fact, this site has nothing to do with the Adobe Flash Player and actually downloads a file (AdobeFlashPlayer.dmg) that installs a potentially unwanted application. Typically, websites such as install-plug-s3[.]com trick people into installing adware, browser hijackers or other PUAs. Adware is a type of software that serves intrusive advertisements. The ads lead people who click them to various untrustworthy websites and, in some cases, they execute scripts that cause download/installation of PUAs. Furthermore, adware might be designed to gather various information. For example, addresses of visited websites, entered search queries, geolocations, IP addresses, and other browsing data. Some of these apps can also access and collect personal, sensitive information. Developers misuse the gathered data to generate revenue and might sell it to third parties (potentially, cyber criminals) who also misuse it. Browser hijackers can also operate as information tracking tools. Additionally, most promote various fake search engines by changing certain browser settings. Fake Adobe Flash Players can also be used to distribute malware (ransomware, Trojans). They can lead to installation of software that causes data/financial loss, installation of other malware, identity theft, problems relating to browsing safety, privacy, and so on. Therefore, it is never safe to open files that are downloaded through websites such as install-plug-s3[.]com.

Threat Summary:
Name install-plug-s3.com pop-up
Threat Type Phishing, Scam, Mac malware, Mac virus.
Fake Claim This website suggests that Adobe Flash Player is out of date and encourages users to download a fake installer.
Detection Names (AdobeFlashPlayer.dmg) Avast (MacOS:Bundlore-CJ [Adw]), BitDefender (Adware.MAC.Bundlore.DXI), Emsisoft (Adware.MAC.Bundlore.DXI (B)), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Bnodlero.x), Full List (VirusTotal)
Serving IP Address 34.237.153.102
Symptoms Your Mac becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites.
Distribution methods Deceptive pop-up ads, free software installers (bundling), fake Flash Player installers, torrent file downloads.
Damage Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information.
Malware Removal (Mac)

To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
▼ Download Combo Cleaner for Mac
To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.

Other examples of websites that are designed to trick people into using fake installers (that supposedly update/install Adobe Flash Player) include managervanilla[.]pw, startnewestmostprogram[.]icu and fineplayerreliablenew[.]best. None update or install Adobe Flash Player - they simply download files that infect systems with malware, or install potentially unwanted applications (or multiple PUAs). As mentioned, browsers often open pages such as install-plug-s3[.]com due to installed PUAs.

How did potentially unwanted applications install on my computer?

In most cases, people download and/or install PUAs when they are distributed by including them into the download/installation set-ups of other software. This distribution method of potentially unwanted software is called "bundling". Generally, offers to download and/or install additional apps can be found in "Custom", "Advanced" and other similar settings of the set-ups. Unfortunately, many people leave these settings unchanged, thereby agreeing by default with offers to download or install additionally-included apps. PUAs are sometimes downloaded or installed by clicking deceptive ads that run certain scripts.

How to avoid installation of potentially unwanted applications

Software should not be downloaded/installed through third party downloaders, installers, Peer-to-Peer networks such as eMule, torrent clients, unofficial pages, and so on. The safest way is to use official websites and direct download links. Furthermore, download/installation set-ups often contain "Custom", "Advanced" and other similar settings. Do not leave these unchecked, since they might contain offers to download or install unwanted software, which can be dismissed before completing the process. Ads that are displayed on dubious web pages tend to redirect people to potentially untrustworthy sites or cause download/installation of unwanted apps. Therefore, do not click these ads. If unwanted, suspicious extensions, plug-ins or add-ons are already installed on the browser, or programs of this kind on the computer, remove them immediately. If your computer is already infected with PUAs, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate them.

Text in a pop-up window displayed by this website:

Software Update

 

Flash Player Update
Download new version

 

Update now

 

Flash Player is essential plugin for your browser that allows you to view everything from video to games and animation on the web.

 

Flash Player supports several data formats including AMF, SWF, XML and JSON. The multimedia formats which are supported by Flash Player include .MP3, .FLV, .JPEG, .GIF, .PNG and .RTMP.

 

Other supported features include accelerated graphics rendering, multi-thread video decoding and webcam support.

 

Later Install

Screenshot of a fake Adobe Flash Player installer:

fake Adobe Flash Player installer

Another screenshot of a fake Adobe Flash Player installer:

fake Adobe Flash Player installer

Appearance of install-plug-s3[.]com scam (GIF):

Appearance of install-plug-s3[.]com scam (GIF)

Instant automatic Mac malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac 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. Limited three days free trial available.

Quick menu:

Video showing how to remove adware and browser hijackers from a Mac computer:

Potentially unwanted applications removal:

Remove potentially unwanted applications from your "Applications" folder:

mac browser hijacker removal from applications folder

Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX", "NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.

Remove install-plug-s3.com pop-up related files and folders:

Finder go to folder command

Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...

step1Check for adware-generated files in the /Library/LaunchAgents folder:

removing adware from launch agents folder step 1

In the Go to Folder... bar, type: /Library/LaunchAgents

removing adware from launch agents folder step 2
In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step2Check for adware generated files in the /Library/Application Support folder:

removing adware from application support folder step 1

In the Go to Folder... bar, type: /Library/Application Support

removing adware from application support folder step 2
In the “Application Support” folder, look for any recently-added suspicious folders. For example, “MplayerX” or “NicePlayer”, and move these folders to the Trash.

step3Check for adware-generated files in the ~/Library/LaunchAgents folder:

removing adware from ~launch agents folder step 1


In the Go to Folder bar, type: ~/Library/LaunchAgents

removing adware from ~launch agents folder step 2

In the “LaunchAgents” folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, “kuklorest.update.plist”, etc. Adware commonly installs several files with the same string.

step4Check for adware-generated files in the /Library/LaunchDaemons folder:

removing adware from launch daemons folder step 1
In the Go to Folder... bar, type: /Library/LaunchDaemons

removing adware from launch daemons folder step 2
In the “LaunchDaemons” folder, look for recently-added suspicious files. For example “com.aoudad.net-preferences.plist”, “com.myppes.net-preferences.plist”, "com.kuklorest.net-preferences.plist”, “com.avickUpd.plist”, etc., and move them to the Trash.

step 5 Scan your Mac with Combo Cleaner:

If you have followed all the steps in the correct order you Mac should be clean of infections. To be sure your system is not infected run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file double click combocleaner.dmg installer, in the opened window drag and drop Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates it's virus definition database and click "Start Combo Scan" button.

scan-with-combo-cleaner-1

Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide, otherwise it's recommended to remove any found infections before continuing.

scan-with-combo-cleaner-2

After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.

install-plug-s3.com pop-up removal from Internet browsers:

safari browser iconRemove malicious extensions from Safari:

Remove install-plug-s3.com pop-up related Safari extensions:

safari browser preferences

Open Safari browser, from the menu bar, select "Safari" and click "Preferences...".

safari extensions window

In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.

firefox browser iconRemove malicious plug-ins from Mozilla Firefox:

Remove install-plug-s3.com pop-up related Mozilla Firefox add-ons:

accessing mozilla firefox add-ons

Open your Mozilla Firefox browser. At the top right corner of the screen, click the "Open Menu" (three horizontal lines) button. From the opened menu, choose "Add-ons".

removing malicious add-ons from mozilla firefox

Choose the "Extensions" tab and look for any recently-installed suspicious add-ons. When located, click the "Remove" button next to it/them. Note that you can safely uninstall all extensions from your Mozilla Firefox browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.

chrome-browser-iconRemove malicious extensions from Google Chrome:

Remove install-plug-s3.com pop-up related Google Chrome add-ons:

removing malicious google chrome extensions step 1

Open Google Chrome and click the "Chrome menu" (three horizontal lines) button located in the top-right corner of the browser window. From the drop-down menu, choose "More Tools" and select "Extensions".

removing malicious Google Chrome extensions step 2

In the "Extensions" window, look for any recently-installed suspicious add-ons. When located, click the "Trash" button next to it/them. Note that you can safely uninstall all extensions from your Google Chrome browser - none are crucial for normal browser operation.

  • If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
install-plug-s3.com pop-up QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of install-plug-s3.com pop-up on your mobile device.
We Recommend:

Get rid of Mac malware infections today:

▼ REMOVE IT NOW
Download Combo Cleaner for Mac

Platform: macOS

Editors' Rating for Combo Cleaner:
Editors ratingOutstanding!

[Back to Top]

To use full-featured product, you have to purchase a license for Combo Cleaner. Limited three days free trial available.