Attachment: Archive with pdf, txt and wsf files
Detects a known Qakbot delivery method, zip file with pdf, txt and wsf file at a depth of 1
type.inbound and any(attachments, .file_extension in~ $file_extensions_common_archives and length(distinct(filter(file.explode(.), .depth == 1 and .flavors.mime in~ ("application/pdf", "text/plain") ), .flavors.mime ) ) == 2 and any(file.explode(.), .depth == 1 and .file_extension == "wsf") )
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