Possible Steganography Extract Files with Steghide (via auditd)

title: Possible Steganography Extract Files with Steghide (via auditd)
id: 4b578e1c-4ae1-5b31-9fea-39f7f12c5bb4
status: stable
description: This rule detects extraction of files with use of steghide binary, the threat actors may use this method to prevent the detection of hidden information.
references:
    - https://attack.mitre.org/techniques/T1027/003/
    - https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/
author: 'Huntrule Team'
date: 2026-02-15
tags:
    - attack.stealth
    - attack.t1027.003
logsource:
    product: linux
    service: auditd
detection:
    selection:
        type: EXECVE
        a0: steghide
        a1: extract
        a2: '-sf'
        a3|endswith:
            - '.jpg'
            - '.png'
    condition: selection
falsepositives:
    - Unknown
level: low