Promextff.cool “Virus” Removal (Firefox/Chrome/IE)


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This page aims to help you remove Promextff.cool “Virus”. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Software components like Promextff.cool might seem like they function as regular browser extensions for popular browsing program like IE, Google Chrome and Mozilla Firefox but, in reality, a hijacker is probably not something that you’d enjoy having on your PC or in your browser. One of the main reasons for that has to do with the ability of most such apps overwhelming amounts of online advertising content. If you have a browser hijacker on your computer, you will likely get subjected to an endless stream of unwanted page-redirects, pop-up messages, flashy banners, blinking boxes and other similar types of advertisement every time you browse the Internet. Also, you browser itself is likely going to get changed – it’s starting page and its search engine might get replaced with new custom ones that the hijacker is likely impose and enforce. Also, changes might occur to your browser’s toolbar as well as to other aspects of your browsing and internet settings. In general, it could be quite frustrating if you have an app the likes of Promextff.cool on your computer which is why pretty much everyone who encounters a browser hijacker would likely prefer to get rid of it instead of tolerate its presence inside the computer.

Promextff.cool Firefox

Promextff.cool “Virus” Removal

But how could one remove a hijacking app from their PC? Well, the answer to this question will be provided to you in the form of a removal guide that you can find further down this page. The steps in the guide as well as the added removal program for such unwanted software pieces are sure to help you with the uninstallation and the elimination of the pesky Promextff.cool. The reason why we are mainly focusing on the Promextff.cool hijacker is because currently this is one of the most widespread applications of this software category. A lot of people have been recently complaining about this software piece and about its unpleasant activities inside their computer. This is why we believe this article and the guide inside it would help a lot of you with their hijacker-related issues. So, if Promextff.cool is currently messing with your browser and preventing you from surfing the Internet in peace, be sure to take a look at the following instructions and closely follow them in order to make your computer clean off any undesirable apps.

Promextff.cool “Virus” Removal

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Step1

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Step2

WARNING! READ CAREFULLY BEFORE PROCEEDING!

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 

malware-start-taskbar

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/




Scan Results


Virus Scanner Result
ClamAV
AVG AV
Maldet


After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 

Step3

Hold together the Start Key and R. Type appwiz.cpl –> OK.

appwiz

You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:

msconfig_opt

Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.

Step4

Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.

DNS

Step5

  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).

browser-hijacker-taskbar-properties

Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove Promextff.cool from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove Promextff.cool from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Promextff.cool from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.

Step6

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

More important info on hijackers

Something that a lot of users do not realize is that the intrusiveness and the annoyance coming from browser hijackers isn’t the only issue they are typically associated with. You see, an app like Promextff.cool is not a nasty virus program – it is not a malicious Trojan Horse virus or some insidious Ransomware cryptovirus threat. It is an app designed to advertise stuff on your screen and earn money for its creators through those ads. However, despite not being a virus, a browser hijacker like this one could still be security hazard to your system exactly because of its ads. Not all of the adverts you might encounter online are safe and reliable – some of them could be misleading and might even land you on pages that are used for distribution of scary viruses like Rootkits, Works, Ransomware, Spyware, Trojans and others. And since throughout the time there’s a hijacker on your PC the number of ads that are getting displayed on your screen is quite high, the chances of running into some unsafe and potentially hazardous piece of advertisement is significantly increased. Therefore, it’s simply best if you remove the software that generates the ads and tinkers with your browser without your permission which is what we’d advise all of you who might have Promextff.cool on their machines to do. Use our guide or the professional removal tool in it and eradicate the pesky application before anything worse has come to your computer.

Ways you can (unknowingly) get a hijacker installed on your PC

There are a lot of different ways you can land such an app without even knowing it. Say you open a spam e-mail attachment or click on some obscure online advert that is actually a download link for a browser hijacker and there you have it – the hijacker app would easily sneak inside your PC in no time. This is why it’s advisable you only visit reliable sites and use quality sources when downloading new software. Also, after you have downloaded a certain program’s installer, it’s important to look through the setup menus and see if there aren’t any components bundled with the main thing. Oftentimes hijackers get put inside installation packages for other programs and to avoid installing them that way, you’d need to first uncheck them from the installation manager (normally through the Advanced/Custom setup menu) and only then install the program you actually want to have on the PC.

SUMMARY:

Name Promextff.cool
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms The hijacker’s ads and the imposed browser changes are sure to give away the unpleasant app’s presence.
Distribution Method The most popular methods for spreading such apps are the malvertising and the file-bundling.
Detection Tool We generally recommend SpyHunter or a similar anti-malware program that is updated daily.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


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