sigmaDRL-1.1from SigmaHQ/sigma

Steganography Extract Files with Steghide

Detects extraction of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information.

Quality

100

FP risk

—

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ATT&CK techniques

T1027.003

Rule sourcerules/linux/auditd/execve/lnx_auditd_steghide_extract_steganography.yml

title: Steganography Extract Files with Steghide
id: a5a827d9-1bbe-4952-9293-c59d897eb41b
status: test
description: Detects extraction of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information.
references:
    - https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/
author: 'Pawel Mazur'
date: 2021-09-11
modified: 2022-10-09
tags:
    - attack.defense-evasion
    - 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