SS (often "System Studies" or "Source System"), Isa (likely referring to the ISA bus architecture or a specific industrial standard), and 005_s (versioning or set number).
Artifacts intended for analysis with tools like Volatility 3 . SS-Isa-005_s.7z
Hidden in the archive's comment field or a file's "Creation Date" property. SS (often "System Studies" or "Source System"), Isa