  Dark matter could decay into Standard Model particles producing neutrinos
directly or indirectly. The resulting flux of neutrinos from these decays could
be detectable at neutrino telescopes and would be associated with massive
celestial objects where dark matter is expected to be accumulated. Recent
observations of high-energy astrophysical neutrinos at IceCube might hint at a
signal produced by the decay of TeV to PeV scale dark matter. This analysis
searches for neutrinos from decaying dark matter in nearby galaxy clusters and
galaxies. We focus on dark matter masses from 10 TeV to 1 EeV and four decay
channels: $\nu\bar{\nu}$, $\tau^{+}\tau^{-}$, $W^{+}W^{-}$, $b\bar{b}$. Three
galaxy clusters, seven dwarf galaxies, and the Andromeda galaxy are chosen as
targets and stacked within the same source class. A well-established IceCube
data sample is used, which contains 11 years of upward-going track-like events.
In this contribution, we present preliminary results of the analysis.
