HostsFileHijack is a malicious piece of software that can establish full control over the infected device and can to execute harmful processes on it without the owner’s knowledge. Due to its stealth and harmfulness, HostsFileHijack is categorized as a Trojan horse and should be removed from the system asap.

The HOSTS file is a ligitimate Microsoft Windows file which can be found in the path C:\Windows\System32\drivers\etc\HOSTS and it can become a host to malicious entries. If you have suspicions that your HOSTS file has been infected please follow our removal guide below.


The HostsFileHijack notification will pop up if there are malicious entries in your HOSTS file.

Trojan horse programs such as HostsFileHijack are actually the most commonly spread type of malware on the Internet. They can be found in various web locations, including in spam messages, email attachments, torrents, fake web ads, intriguing web offers, misleading links and more.


One of the main reasons for the tremendous popularity of Trojan-based infections among criminal circles like Win32/HostsFileHijack is their complexity. The harm that Win32/HostsFileHijack may do is literally unlimited since it can be programmed to perform a lot of different malicious tasks one after the other.

There is also almost no operating system that is fully resistant to these attacks. In fact, in the last two to three years the number of Trojan horses for Mac and iOS devices has risen significantly. This only indicates that the members of this malicious category of software are not to be underestimated and can be quite threatening and troublesome.

Hosts File Hijack

In this article, our main goal will be to help people that have been infected with Hosts File Hijack to safely remove it from their machines. First we will start with pointing out some of the possible symptoms that may indicate the presence of Hosts File Hijack on your machine.

  • Unexpected system shutdowns and Blue Screen of Death (BSOD) crashes.
  • Frequent program freezes and non-existent or unusual software errors.
  • Intensive usage of RAM, CPU, GPU and HDD space without any actual need or activity from your side.
  • Questionable-looking tasks and unfamiliar processes in the Task Manager window that use a lot of CPU and RAM resources and are not linked to the OS.
  • Modified, corrupted or destroyed digital files.
  • System configuration changes that have not been approved or made by you.
  • Changes in the settings of your applications that you haven’t authorized (most commonly in your web browser).
  • Generation of aggressive and hard-to-remove pop-up messages and sketchy commercials on your screen, especially links that redirect to adult and gambling websites.

A very important thing to point out here is that not all of these symptoms may occur. In fact, you may be infected with a threat like HostsFileHijack and still not be able to detect any symptoms or anomalies that can raise your attention or give you a reason to believe that you have been compromised. What is more, most of the aforementioned symptoms (if not all) can show up due to many other reasons which may not necessarily be linked to a Trojan horse infection. This is because Trojans, in general, try to hide their traces for as long as possible or at least until they complete their agenda. That’s why users have little to no chance of catching the malware without the help of professional security software. However, if you spot one or more of the red flags mentioned above, you should carefully check your computer with a trustworthy antivirus or anti-malware tool and remove all the files that are flagged as malicious. If HostsFileHijack has already infected you but you don’t have such a tool at hand, on this page you will find a professional program that you can trust. Alternatively, you can complete the HostsFileHijack removal guide that we have provided for you right below this article and see if it helps.


Name HostsFileHijack
Type Trojan
Detection Tool

anti-malware offerOFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

HostsFileHijack Removal

You are dealing with a malware infection that can restore itself unless you remove its core files. We are sending you to another page with a removal guide that gets regularly updated. It covers in-depth instructions on how to:
1. Locate and scan malicious processes in your task manager.
2. Identify in your Control panel any programs installed with the malware, and how to remove them. Search Marquis is a high-profile hijacker that gets installed with a lot of malware.
3. How to clean up and reset your browser to its original settings without the malware returning.
You can find the removal guide here.
For mobile devices refer to these guides instead: Android, iPhone.


About the author


Lidia Howler

Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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