
Hiding Payloads in Linux Extended File Attributes
This week, it’s SANSFIRE[1]! I’m attending the FOR577[2] training (“Linux Incident Response & Threat Hunting”). On day 2, we covered the different filesystems and how data is organized on disk. In the Linux ecosystem, most filesystems (ext3, ext4, xfs, …) support “extended file attributes”, also called “xattr”. It’s a file system feature that enables users to…