Hijacker apps the likes of Weknow.ac Virus are really some of the most irritating forms of undesirable software you could get installed onto your computer since they target the browsers on your machine and make them difficult to use. Although this isn’t the same as an infection from a Ransomware or Trojan Horse virus (or any other kind of malware), the effects that Weknow.ac or any other hijacker app could have on your computer could really get on your nerves and ruin your day. Here are several examples of what could be expected if you get a hijacker on your Edge, Firefox, Chrome, Opera browser (or any other browser that’s on your PC:
- Sudden and intrusive redirects to random pages you did not intend to visit.
- Changes to the browser’s default homepage, new-tab page, search engine tool, toolbar, etc.
- Generation of obstructive and irritating advertising materials on your screen whenever you are using the browser (banners, box messages, pop-ups, blinking boxes and so on).
- The hijacker might also monitor some of your online activities and gather information from your browser. The collected data usually includes recent searches, page visits, liked content, browser history, etc.
- In order to function more effectively, the hijacker might also tinker with the registry keys in your Registry editor which can sometimes lead to a number of issues.
- Due to the hijacker’s activities, your browser might become slower and your PC might start using unusually high amounts of RAM and CPU in order to support the different processes conducted by the unwanted app.
Dealing with hijackers
Above, we listed the main effects you could expect from a hijacker app the likes of Weknow.ac. As you can see, although this software piece isn’t some nasty and insidious Ransomware or Trojan Horse virus, it might still possess a number of particularly unpleasant abilities that could both heavily disrupt your normal browsing activities as well as potentially indirectly lead to a number of more serious issues. That is why, most virtual security experts (our team included) would advise users to make sure to remove any hijacker-like app from their machines as soon as they notice the presence of the undesirable software piece. Here, it needs to be noted that it might not be all that easy to get rid of Weknow.ac or any similar software component. It is rare for a hijacker to have a built-in uninstallation option and in the majority of cases, apps like these are programmed and created in a way that would make the difficult to remove. That said, it’s still possible to manually get rid of a hijacker if you know where to look for it inside the computer. Instructions on how to locate and eliminate Weknow.ac will be provided for you down below on this page so feel free to use the provided guide in order to eradicate the intrusive software component from your computer and from your browser. Inside the guide, we have also made sure to add a suggested program that specializes in dealing with undesirable and potentially dangerous forms of software meaning that you could also use this program to eliminate the hijacker in case you don’t feel comfortable with completing the manual steps from the guide.
What are the dangers?
Malicious ads can be found everywhere on the Internet and since most hijackers tend to uncontrollably stream all kinds of advertising materials to the user’s screen, it’s simply safer to keep away from them in order to avoid having the safety of your machine compromised. Clicking on hijacker-generated ads is risky and inadvisable as you could easily land some nasty malware infection if you are unlucky and interact with the wrong advert. Also, this is yet another reason why it is usually better to simply eliminate any hijacker on your computer so that you’re no longer forced to put up with its ads and page redirects.
Why it’s important to customize the installation of new programs
Oftentimes, hijacker elements get bundled with legitimate programs that many users download and install without taking a moment to explore the different options and menus of the installation wizard. If you do this, it is likely that you’d end up getting the hijacker installed on your machine alongside the main program from the package. However, if you try to customize the setup configuration manually and disable the installation of any added content that doesn’t seem reliable or needed on your PC, you will not get any of the potentially undesirable apps that might have been added to the bundle after the installation has been finished. Therefore, always remember to customize the installation and pay close attention to the details in the setup manager.
Weknow.ac Virus Removal
Before you begin completing the steps from the following guide, we advise you to place a bookmark on this page or have it opened on a separate device since some of the following steps will require you to close your browser.
Enter Safe Mode. If you don’t know how to do it, use this guide.
Open the Task Manger by pressing Ctrl+Shift+Esc. Go to the processes/details Tab and take a look at the resulting list. If you see a process with the name of the unwanted program or looks shady, right-click on it and select Open File Location. If you believe it is part of the infection, delete the files.
Use the Winkey+R key combination to open the Run window and in the search field type appwiz.cpl. Hit Enter and in the resulting list, look for recently installed programs that look potentially unwanted. If you find anything – uninstall it.
Re-open Run and this tie type msconfig. Hit Enter again and in the resulting window, go to the Startup tab. See if there are any shady programs there and if anything looks suspicious uncheck it and then select OK.
In the Start Menu search field, copy-paste the following line: notepad %windir%/system32/Drivers/etc/hosts . Open the first result and look at the bottom of the file where it says “Localhost”. If there are any IP addresses below that, tell us what they are in the comments since they might be coming from the unwanted software.
Type Network Connections in the Windows search field and click on the first result. Right-click on the adapter that you are using at the moment and go to Properties > Internet Protocol Version 4 (TCP/IP) > Properties.
If the DNS line is not set to Obtain DNS server automatically, make sure to check that option.
Now go to Advanced > DNS tab and remove everything in DNS server addresses, in order of use.
Right-click on your browser’s icon and select Properties. Delete everything in Target that is after .exe”.
For Chrome users
Close Chrome and go to this folder: C:/Users/*Your username*/AppData/Local/Google/Chrome/User Data. Change the name of the Default folder to Backup Default. Re-open Chrome.
For Firefox users
Open Firefox and click on the Main Menu > Add-ons > Extensions. If you see anything suspicious there, remove it.
For IE users
When you open the browser, go to Tools > Manage Ad-ons and remove the unwanted software if you see it there. Next, go to Tools > Internet options and change the homepage URL to whatever you are normally using.
Open Run (Winkey+R), type Regedit and click on OK. Next, press Ctrl+F and type the malware name. Hit Enter and delete everything that gets found.
If there are no results from the search, manually visit those folders in the Registry Editor.
- HKEY_CURRENT_USER/Software/Microsoft/Internet Explorer/Main
If you find there any suspicious keys that have names with a lot of random letters and numbers, delete them or if you are not sure, tell us in the comments what you saw.