Modded investigations?

Just hopped on the game to grind some tempered Arkveld investigations, so I joined an SOS signal. I always just pick one as quickly as I can because they fill up so fast and I'm not too picky about the rewards.

I joined the quest and after about a minute the host captured the Arkveld (with no skull over it on the map icon which I thought was weird).

Upon completion I received stacks of 244 artian parts and 244 gold melding tickets. Now obviously this was modded, but I'm now worried my account will get flagged for cheating or something and I don't want to get banned because I hastily and unknowingly joined a modded investigation.