It may be a sample pack or "drum kit" used in digital audio workstations (DAWs) like FL Studio or Ableton. "Toxin" is a common stylized name for sound design libraries.
There is no widely recognized software, media, or product titled . drumstoxin.7z
Look for a README.txt or info.nfo file inside, which typically contains the creator's name, version details, and intended use. It may be a sample pack or "drum
If you have downloaded this file and want to see what is inside safely: which typically contains the creator's name
Could you provide or what it's supposed to do? That would help me track down a specific community review for you.