What you can do is:
1. Run proc contents (proc contents data=<your sas dataset>;run;). If
you're lucky then the creating program wrote in the dataset label it's
2. Get the properties on OS level and look who created or owns the
dataset. Might give you a hint where to search or whom to ask for the
3. Search possible SAS source code for the name of this dataset.
4. Analyse Logs if available.
Hope that helps