Rumors indicate Russia is quetly providing support to the Armenian forces,especially in anti drone warfare,with the use of the Krashukha-4 electronic warfare system. Nine Azeri drones were reportedly shot down in the Gyumri region,but no proofs have been presented to confirm this claim.
The same system was used by the LNA in Libya,with limited success it seems.
That was fake news, Krashukha is not even designed to counter drones, its designed to blind enemy radars. Specifically AWACS.