If numerous malware specimens attempt to be “filess” (meaning: they aim to minimize their filesystem presence to the least possible), another method remains notable: Alternate Data Streams or “ADS”[1]. This NTFS characteristic permits files to hold several data streams, allowing concealed or supplementary metadata to be saved alongside the primary file content without appearing in typical file listings. A prevalent application of ADS is the “Mark of the Web”[2], which assists in categorizing files as either suspicious or benign based on their source.