Official Xhorse files hosted on Key Academy /software/?cat=xhorse
Source: official Xhorse download host dl.xhorse.com (Shenzhen XHorse Electronics Co., Ltd.)
Nothing taken from KEY24 or reseller mirrors.

Files
-----
Xhorse_VVDI2_Installer_V7.5.2.exe
  official: http://dl.xhorse.com/product/vvdi2/software/VVDI2-InstallerV752.exe

Xhorse_Multi_PROG.exe
  official: http://dl.xhorse.com/product/multiProg/Multi-PROG.exe

Xhorse_VVDI_PROG_V5.3.8_password_123456.zip
  official: http://dl.xhorse.com/product/vvdiprog/VVDIProg5.3.8PASSWORD123456.zip
  zip password published by Xhorse: 123456
  SKIPPED: official package is ~1.8 GB; server free space was 2.9 GB after other files.

Phone apps (official stores, not APK mirrors)
---------------------------------------------
Android: https://play.google.com/store/apps/details?id=com.xhorse.assembly
  developer: 深圳数马电子技术有限公司 / Shenzhen XHorse Electronics
  for Key Tool Mini/Max, Mini Prog, Dolphin XP-005 and other app-managed devices

iOS: https://apps.apple.com/app/xhorse/id1440550587
  developer: Shenzhen XHorse Electronics Co., Ltd.

Manufacturer site: http://www.xhorse.com/
Official download host: http://dl.xhorse.com/