  Intermediate Mass Black Holes (IMBHs) are a class of black holes with masses
in the range $10^2 \div 10^5$ $M_\odot$, which can not directly derive from
stellar evolution. Looking for these objects and estimating their abundance is
important not only for a deeper understanding of their origin but also for
unveiling the nature and distribution of the dark matter in the galactic halo.
Since February 2018 to January 2020, the Large and Small Magellanic Cloud have
been intensively monitored by the DECAM instrument, installed on the 4m V.
Blanco Telescope (CTIO, Chile) with the main objective to discover microlensing
events possibly due to IMBHs. Here we outline the developed data analysis
pipeline. We have tested it versus known variable sources finding many not
previously known variables objects. A few sources show a light curve similar to
that expected for a microlensing event, but further analysis is required to
confirm the microlensing nature of these events. For these sources, and in
particular for the uncatalogued variable stars, we try to determine if they are
periodic or not via a periodogram analysis.
