  Models that produce a flux of semi-relativistic or relativistic boosted dark
matter at large neutrino detectors are well-motivated extensions beyond the
minimal weakly interacting massive particle (WIMP) paradigm. Current and
upcoming liquid argon time projection chamber (LArTPC) based detectors will
have improved sensitivity to such models, but also require improved theoretical
modeling to better understand their signals and optimize their analyses. I
present the first full Monte Carlo tool for boosted dark matter interacting
with nuclei in the energy regime accessible to LArTPC detectors, including the
Deep Underground Neutrino Experiment (DUNE). The code uses the nuclear and
strong physics modeling of the GENIE neutrino Monte Carlo event generator with
particle physics modeling for dark matter. The code will be available in GENIE
v3. In addition, I present a code for generating a GENIE-compatible flux of
boosted dark matter coming from the Sun that is released independently.
