This spooky sound was created in Ableton Live using a variety of processing. The main device responsible is Pluggo’s Feedback Network. I ran a modulated synth pad into it, then removed all of the dry signal after automating several parameters. I re-sampled the results then pitched it all down two octaves being careful to filter out inaudible low frequencies. Finally, over the top I added a ping pong delay so the audio swirls around the stereo spectrum adding to the disturbing qualities of the sound.
Night Sky Moon Painting
To make this sound I increased the gain on some 60Hz buzz that I grabbed out of a bass guitar recording. There’s no bass, just the hum of electrical interference. A lot of boosting was necessary to get an adequate level. 
I produced this sound by programming a scale in a MIDI clip and then sending it to a virtual instrument designed to allow for freely manipulating granular synthesis through several seven point envelopes. I made several takes while I adjusted the envelops and other parameters. 
With very little time for today’s sound I resorted to randomizing the parameters in Pluggo’s xmod synth, then resampling the results as I dragged the mouse up and down on the virtual keyboard in Ableton Live’s sequencer. I often use this technique with a variety of VSTs as a starting point to get a new sound, so I thought I’d lay it down, so you can hear a little behind-the-scenes audio.
I am not, nor will I ever claim to be a guitarist, so please forgive the playing in this example. I do like the sound I have achieved here though. To get it I ran a cheap Fender Squire through VST distortion, thickly modulated chorus, followed by delay, and reverb. It’s very 80s, although I was not necessarily going for that. I does seem to go well in the piece in which it was recorded.