The sandworm is one of the first beasts that appears in Monster Hunter Wilds and burrows deep into the ground before tunneling upward for a lethal attack. Their mouth is the weak spot, and they don't like sound disrupting their behaviour.

You need a Shock Trap or Pitfall Trap and at least two Tranq Bombs (or similar) to trap or capture a monster. To trap the monster, attack it until a skull icon appears above its head on the mini map. Place a Shock Trap on the ground, ensuring that the monster walks into it or touches it. Once it’s caught, throw two Tranq Bombs at its head.

Monster Hunter Wilds: 10 hardest monsters in the game including end game opponents and nasty surprises in the campaign.