* Headlights accidentally left on a low beam setting: Check your headlight switch. It might be in a position that provides only a dimmed light, which could be mistaken for DRLs.
* Aftermarket modification: Someone may have added aftermarket DRLs. If this is the case, you'll need to find where they're wired into the electrical system to disable them. This might involve tracing wires and potentially disconnecting a relay or fuse. This is more complicated and may require professional help.
In short, you likely don't need to turn off DRLs on a 1997 Malibu because it probably doesn't have them. Focus on determining what lights are actually illuminating and how they're being activated.