  We present multiwavelength observations of supernova (SN) 2017hcc with the
Chandra X-ray telescope and the X-ray telescope onboard Swift (Swift-XRT) in
X-ray bands, with the Spitzer and the TripleSpec spectrometer in near-infrared
(IR) and mid-IR bands and with the Karl G. Jansky Very Large Array (VLA) for
radio bands. The X-ray observations cover a period of 29 to 1310 days, with the
first X-ray detection on day 727 with the Chandra. The SN was subsequently
detected in the VLA radio bands from day 1000 onwards. While the radio data are
sparse, synchrotron-self absorption is clearly ruled out as the radio
absorption mechanism. The near- and the mid-IR observations showed that late
time IR emission dominates the spectral energy distribution. The early
properties of \snhcc\ are consistent with shock breakout into a dense mass-loss
region, with $\dot M \sim 0.1 M_\odot \rm yr^{-1}$ for a decade. At few 100
days, the mass-loss rate declined to $\sim 0.02 M_\odot \rm yr^{-1}$, as
determined from the dominant IR luminosity. In addition, radio data also
allowed us to calculate a mass-loss rate at around day 1000, which is two
orders of magnitude smaller than the mass-loss rate estimates around the
bolometric peak. These values indicate that the SN progenitor underwent an
enhanced mass-loss event a decade before the explosion. The high ratio of IR to
X-ray luminosity is not expected in simple models and is possible evidence for
an asymmetric circumstellar region.
