Obviously includes electronic warfare, and has done since WW2 when strips of aluminium foil were dropped from bombers to scatter German radar. My point stands. Besides the fact that the drone clearly hasn't been damaged badly, it would have still required precision detection capable of spotting it, something which a SAM would also benefit from.
Magnitude 4.2 quake strikes near Grand Coulee Dam in Washington (Reuters)
from the article: Iran state television displays 'downed U.S. surveillance drone'