/usr/share/afterstep/start/4_xterminal is in afterstep-data 2.2.12-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | Exec "XTerminal" exec x-terminal-emulator -T "XTerminal@`hostname --long`" &
MiniPixmap "mini-app.xpm"
|