Windows System32 Drivers Etc Hosts File Download: How to Block Websites, Redirect Domains, and Remov
- pocorrabapegthea
- Aug 14, 2023
- 6 min read
The Hosts file in Windows 11/10/8/7, is used to map host names to IP addresses. If for some reason, you find that your Hosts file has been compromised and that some malicious entries have been added, you can if you wish, reset Hosts file back to default.Reset Hosts file in Windows 11/10The Hosts file in Windows 10/8/7 is located at the following location:C:\Windows\System32\drivers\etcif(typeof ez_ad_units!='undefined')ez_ad_units.push([[728,90],'thewindowsclub_com-medrectangle-4','ezslot_2',815,'0','0']);__ez_fad_position('div-gpt-ad-thewindowsclub_com-medrectangle-4-0');To reset the Hosts file, open File Explorer, type the following in the address bar and hit Enter:%systemroot% \system32\drivers\etc
windows system32 drivers etc hosts file download
Rename the Hosts file to hosts.bak. You may be required to take ownership of the file first.Next, create a new default Hosts file. To do so, open a new Text file named hosts in the folder %WinDir%\system32\drivers\etc folder.Copy-paste the following text into the notepad file:# Copyright (c) 1993-2009 Microsoft Corp. # # This is a sample HOSTS file used by Microsoft TCP/IP for Windows. # # This file contains the mappings of IP addresses to host names. Each # entry should be kept on an individual line. The IP address should # be placed in the first column followed by the corresponding host name. # The IP address and the host name should be separated by at least one # space. # # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host # localhost name resolution is handle within DNS itself. # 127.0.0.1 localhost # ::1 localhostSave the text file.Download default Windows Hosts fileAlternatively, if you wish you can download the default Hosts file of Windows 11/10 by clicking here. Extract the contents and place the Hosts file in your C:\Windows\System32\drivers\etc folder. You may be asked for permission to replace it.HostsMan is a good freeware utility that lets you add, remove the entries and generally lets you manage the Hosts File in Windows easily. Go here to see how you can Lock, Manage, Edit Hosts File in Windows.if(typeof ez_ad_units!='undefined')ez_ad_units.push([[300,250],'thewindowsclub_com-banner-1','ezslot_6',819,'0','0']);__ez_fad_position('div-gpt-ad-thewindowsclub_com-banner-1-0');
Using automatic hostnames works best for per project installations of Homestead. If you host multiple sites on a single Homestead instance, you may add the "domains" for your web sites to the hosts file on your machine. The hosts file will redirect requests for your Homestead sites into your Homestead virtual machine. On macOS and Linux, this file is located at /etc/hosts. On Windows, it is located at C:\Windows\System32\drivers\etc\hosts. The lines you add to this file will look like the following:
Make sure the IP address listed is the one set in your Homestead.yaml file. Once you have added the domain to your hosts file and launched the Vagrant box you will be able to access the site via your web browser:
Next, run the vagrant up command in your terminal and access your project at in your browser. Remember, you will still need to add an /etc/hosts file entry for homestead.test or the domain of your choice if you are not using automatic hostname resolution.
If Vagrant is not automatically managing your "hosts" file, you may need to add the new site to that file as well. On macOS and Linux, this file is located at /etc/hosts. On Windows, it is located at C:\Windows\System32\drivers\etc\hosts:
If the hosts file on your computer contains the mapping of IP addresses of Sonarworks hosts names, you may be unable to access our website and/or have trouble downloading the SoundID Reference installer, and encounter other connectivity issues to our host. Follow the instructions below to resolve the problem on your macOS or Windows device.
As the Internet developed and more devices were connected in different geographical locations, it was no longer practical to maintain a single hosts file. The Domain Name System (DNS) was created in 1984 to provide devices connected to the Internet with a way to look up hostnames by querying a set of distributed servers. And that is how the Internet works to this day.
Perhaps the easiest way to view and/or edit the hosts file is to use the new Hosts File Editor in Microsoft PowerToys. But if you want more information about what the Hosts file is and how to edit it manually, skip to the next section.
But the hosts file remains part of most operating systems. It can be used to override results provided by DNS servers and provide hostname lookup on a local area network (LAN) in the absence of a DNS server. Depending on the operating system, the hosts file is found in a different location. For instance, in Unix, you will find the hosts file in /etc/hosts. And on all modern versions of Windows, including Windows 11, the hosts file is in %SystemRoot%\System32\drivers\etc\hosts. The %SystemRoot% environment variable by default points to C:\WINDOWS.
The hosts file contains lines of text with two columns. In the first column there is an IP address. And in the second column, there is a computer hostname. The two columns can be separated by a space or tab. So, an example hosts file might look like this:
The hostnames you add to the hosts file are not case sensitive. They can be in uppercase, lowercase, or a mixture of both. Be aware that the hosts file is sometimes used by hackers to redirect network traffic to malicious sites. That is why only administrators can edit the hosts file in Windows.
The Astaroth attack generally followed these steps: A malicious link in a spear-phishing email led to an LNK file. When double-clicked, the LNK file caused the execution of the WMIC tool with the "/Format" parameter, which allowed the download and execution of malicious JavaScript code. The JavaScript code, in turn, downloads payloads by abusing the Bitsadmin tool.
This section will discuss using some native Windows tools for download and upload operations. Later in the module, we'll discuss Living Off The Land binaries on Windows & Linux and how to use them to perform file transfer operations.
Most companies allow HTTP and HTTPS outbound traffic through the firewall to allow employee productivity. Leveraging these transportation methods for file transfer operations is very convenient. Still, defenders can use Web filtering solutions to prevent access to specific website categories, block the download of file types (like .exe), or only allow access to a list of whitelisted domains in more restricted networks.
PowerShell offers many file transfer options. In any version of PowerShell, the System.Net.WebClient class can be used to download a file over HTTP, HTTPS or FTP. The following table describes WebClient methods for downloading data from a resource:
As we previously discussed, fileless attacks work by using some operating system functions to download the payload and execute it directly. PowerShell can also be used to perform fileless attacks. Instead of downloading a PowerShell script to disk, we can run it directly in memory using the Invoke-Expression cmdlet or the alias IEX.
From PowerShell 3.0 onwards, the Invoke-WebRequest cmdlet is also available, but it is noticeably slower at downloading files. You can use the aliases iwr, curl, and wget instead of the Invoke-WebRequest full name.
Harmj0y has compiled an extensive list of PowerShell download cradles here. It is worth gaining familiarity with them and their nuances, such as a lack of proxy awareness or touching disk (downloading a file onto the target) to select the appropriate one for the situation.
We can use SMB to download files from our Pwnbox easily. We need to create an SMB server in our Pwnbox with smbserver.py from Impacket and then use copy, move, PowerShell Copy-Item, or any other tool that allows connection to SMB.
When we get a shell on a remote machine, we may not have an interactive shell. If that's the case, we can create an FTP command file to download a file. First, we need to create a file containing the commands we want to execute and then use the FTP client to use that file to download that file.
There are also situations such as password cracking, analysis, exfiltration, etc., where we must upload files from our target machine into our attack host. We can use the same methods we used for download operation but now for Uploads. Let's see how we can accomplish uploading files in various ways.
Uploading files using FTP is very similar to downloading files. We can use PowerShell or the FTP client to complete the operation. Before we start our FTP Server using the Python module pyftpdlib, we need to specify the option --write to allow clients to upload files to our attack host.
We discussed several methods for downloading and uploading files using Windows native tools, but there's more. In the following sections, we'll discuss other mechanisms and tools we can use to perform file transfer operations.
I work with Windows Client and Server systems on a private network that cannot reach the internet. Problem is, many programs (like Subversion) cause Windows to attempt connections to www.download.windowsupdate.com to download a file called "authrootstl.cab" file. The direct result is that many programs that use SSL, like Subversion, block for five or ten seconds trying to resolve this host (which it never does).
I've tried putting this host to 127.0.0.1 or some other IP address in my C:\Windows\System32\Drivers\Etc\hosts file, but it still tries to look this up in DNS, and I assume it is bypassing the hosts file for security reasons.
Well, if you cannot touch the official DNS, perhaps you install a proxy DNS (on your workstation) that has a fake entry (pointing e.g. to 127.0.0.1) for www.download.windowsupdate.com, and that redirects all the other requests to the true DNS. 2ff7e9595c
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