  In this paper we propose a possible explanation of the active neutrino
Majorana masses with the TeV scale new physics which also provide a dark matter
candidate. We extend the Standard Model (SM) with a local U(1)' symmetry and
introduce a seesaw relation for the vacuum expectation values (VEVs) of the
exotic scalar singlets, which break the U(1)' spontaneously. The larger VEV is
responsible for generating the Dirac mass term of the heavy neutrinos, while
the smaller for the Majorana mass term. As a result active neutrino masses are
generated via the modified inverse seesaw mechanism. The lightest of the new
fermion singlets, which are introduced to cancel the U(1)' anomalies, can be a
stable particle with ultra flavor symmetry and thus a plausible dark matter
candidate. We explore the parameter space with constraints from the dark matter
relic abundance and dark matter direct detection.
