![]() After going through things like file actions, registry modifications and processes there don’t appear to be any similarities. ![]() Once that’s completed we can investigate the causality chain and see if there are any interesting characteristics that we can hone in on.īelow are the Causality chains for the install of our two installation files for Google Chrome and VLC Media Player respectively.Ĭausality chain for Google Chrome installationĬausality chain for VLC Media Player installationĪt first glance nothing seems to pop out. Windows always uses Windows Installer (a utility included with Windows) to open MSI files and install the program they contain.Ĭhrome and VLC Media Player are now going to be installed on the test machines. They never contain Windows applications or other programs. MSI files are similar to EXE files, except they always contain application installers. This program was previously named the Microsoft Installer, which is what gave MSI files their name.īelow is an image of using the 7 zip utility to extract the files inside of Firefox Setup 14.0.1.msi.ĭevelopers may save Windows application installers as. Windows uses the Windows Installer program to open MSI files. It may be used for Windows updates or third-party software installers. For this PoC we’re going to focus on installation files and not any of the other types.īelow is an image of the contents of the VLC Media Player install file with its contents extracted using the 7 zip utility.Īn MSI file is a Windows package that contains installation information for a particular installer, including files to be installed and installation locations. exe extension also come in different types such as portable executables. ![]() All EXE files are executable files, but not all executable files are EXE files.Įxecutable files with the. With Windows, EXE is the file extension for an executable file. Executable files commonly have an EXE file extension, but there are hundreds of other executable file formats. An executable file (EXE file) is a computer file that contains an encoded sequence of instructions that the system can execute directly when the user clicks the file icon. exe extension may be one of the most easily recognizable file formats in existence. exe as they’re the more prevalent types of installation files available. run, but for this PoC we’re only going to focus on. Other types of installation files exist such as. The most common types of installation files are. For example, registry files and other system code may need to be modified or deleted for a complete uninstallation. Because code is generally copied/generated in multiple locations, uninstallation often involves more than just erasing the program folder. It provides easier access via the operating system - creating necessary directories, registering environment variables, providing separate programs for un-installation, etc. Installation typically involves code (program) being copied/generated from the installation files to new files on the local computer.
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