/usr/share/applications/torbrowser.desktop is in torbrowser-launcher 0.2.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Desktop Entry]
Name=Tor Browser
GenericName=Tor
Comment=Launch Tor Browser
Exec=torbrowser-launcher %u
Terminal=false
Type=Application
Icon=torbrowser
Categories=Network;WebBrowser;
|