High Severity

Attachment: LNK file

Description

Recursively scans files and archives to detect LNK connection files.

LNK files can be weaponised to execute arbitrary commands including unpacking and running executable content embedded within the file itself.

@ajpc500
Created Aug 17th, 2023 • Last updated Aug 21st, 2023
Source
type.inbound
and any(attachments,
        .file_extension =~ "lnk"
        or (
          .file_extension in~ $file_extensions_common_archives
          and any(file.explode(.), .file_extension =~ "lnk")
        )
)
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