This amateur video recorded few days ago shows an unmanned aircraft flying over Kafr Batna, a small suburb of Damascus, Syria.
Damascus is known to be equipped with just a few types of UAS. Among them, the Iranian made Mohajer 4 and Ababil and maybe also the Mirsad-1 that Hezbollah has used to violate the Israeli airspace in the past.
Mohajer 4
Another possibility is an aircraft thought to be called “Pahpad” (پهپاد), the short form of “parandeye hedayat pazire az rahe door” (“پرنده هدایت پذیر از راه دور”) which is Persian for “remotely piloted aircraft”.
Pahpad
Source: The Aviationist