Ks-bb.7z -

The file name appears to combine a unique identifier ("KS") with the command-line switch used in 7-Zip.

If you have encountered "KS-BB.7z" as a download from an unknown source, proceed with caution. While 7-Zip is a legitimate tool, malware authors sometimes use identical-looking file names to hide Trojans. 7-Zip is a file archiver with a high compression ratio. -bb (Set output log level) switch - 7-Zip

In the 7-Zip command-line interface, -bb is a switch used to set the output log level . -bb0: Disables the log (default). -bb1: Shows the names of all processed files in the log.

Shows names of additional files processed internally in solid archives.