Squeaky bathroom drawer! Model is WHS.?

Rub bar soap on the surfaces that touch

lithium cartridge grease

You could try rubbing a candle on the moving parts, the wax is a good lubricant for that sort of thing, or indeed a bar of soap. To go more high-tech, get a silicon spray, often sold as "rubber and nylon lubricant" in car spares places and the like.

WD-40 isn't particularly good for that, it'll help release stuck parts but isn't much good for lubrication afterwards.

try coating the part that slides into or on the bad rail with solid soap [bar soap]

harware shops or cabinet suppliers have the gear

Don't replace the slides. And don't try WD-40, either - it's great for an incidental problem but it's a pretty light oil. It'll be gone soon and you'll still have the squeak.

Instead, go to any hardware store and get some silicone grease. It'll be in the plumbing aisle and it's kind of expensive ($7 for an ounce, but it's great for plumbing issues so it's worth it), but shoot some dabs of that in there right on the ball bearings and work the slides back and forth. Get the stuff in there top and bottom, and make sure you haven't missed anything.

That ought to be a permanent, or near-permanent solution.

Good luck with it.

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