We propose the magnetic sterile neutrino as a possible candidate for dark matter. After a short summary on the role of dark matter in cosmology and the neutrino in particle physics, we bring the idea that dark matter would be made up of substances originating from black holes, in particular sterile neutrinos associated with a magnetic charge. These would not be sensitive only to the gravitational force. First, we conjectured to explain dark matter that it is composed of particles of the neutrino and antineutrino type associated with a magnetic charge and that these neutrinos come from primordial and classical black holes. We assumed that when baryonic matter crosses the event horizon, Maxwell's laws are reversed, the electric charge turns into a magnetic charge. Sterile magnetic neutrinos would be created and emitted, true magnetic monopoles. Second, we discuss dark matter consisting of sterile neutrinos associated with magnetic charge, the cosmic microwave background that displays non-baryonic dark matter, mini primordial black holes, and the formation of intermediate mass primordial black holes linked to dark matter and the formation of galaxies. Third, we review different mechanisms of how sterile magnetic neutrino could have escaped from the black hole to become dark matter. Fourth, we investigate the possibility that ordinary neutrinos could be produced by the weak interaction if sterile magnetic neutrinos from dark matter interact with active neutrinos from ordinary matter. Fifth, after examining some interactions between sterile magnetic neutrinos and standard neutrinos, as well as equations of possible production of gamma rays from the annihilation of neutrinos-antineutrinos, we propose that sterile magnetic neutrinos may exhibit a nonradiating current configuration in dark matter called "anapole", which would be weakly sensitive to electromagnetic forces. Before concluding, we deplore the ignorance of the absolute mass of the regular neutrino, we underline the relation between the distribution of the magnetic fields coming from the baryonic matter and that from the dark matter, which could potentially make it possible to detect in the cosmos the trace of this dark matter beyond its mere gravitational presence. And we bring out the gamma ray glows in the dark that can be attributed to the annihilation of dark matter with itself.