  The assumption of a single astrophysical power-law flux to explain the
IceCube 6-year HESE extraterrestrial events yields a large spectral index that
is in tension with gamma-ray observations and the 6-year up-going muon
neutrinos data. Adopting a spectral index belonging to the range
$\left[2.0,2.2\right]$, which is compatible with the one deduced by the
analysis performed on the 6-year up-going muon neutrinos data and with $p$-$p$
astrophysical sources, the latest IceCube data show an up to $2.6\,\sigma$
excess in the number of events in the energy range 40--200 TeV. We interpret
such an excess as a decaying Dark Matter signal and we perform a
likelihood-ratio statistical test to compare the two-component scenario with
respect to the single-component one.
