These green dots are most likely flare/ghost reflections caused by the UV filter, not the camera body. Bright point light sources, especially in dark scenes, can reflect between the filter and lens elements and create colored ghost images like this. A basic UV/protection filter is especially prone to it if it lacks strong anti-reflective coatings.

To avoid it:

• Remove the UV filter when shooting scenes with bright lights at night or in low light.
• If you want a protective filter, use a better multi-coated one.
• Use a lens hood and keep the front glass clean.
• Recompose slightly if a bright light is triggering obvious ghosts.

Any added filter can increase the chance of reflections, so if image quality matters most, shooting without the protective filter is the safest fix.