Files with "SC" codes are often associated with specialized databases or game assets (like StarCraft or Super Robot Wars mods). Always run a virus scan after extraction if the source is unfamiliar.
7-Zip > Extract Here or Extract to "sc24138-BNGDv027/" . sc24138-BNGDv027.7z.003
Do you have the and .002 files in the same folder as this one? Files with "SC" codes are often associated with