Steganography Hide Files with Steghide

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

Sigma rule (View on GitHub)

 1title: Steganography Hide Files with Steghide
 2id: ce446a9e-30b9-4483-8e38-d2c9ad0a2280
 3status: test
 4description: Detects embedding of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information.
 5references:
 6    - https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/
 7author: 'Pawel Mazur'
 8date: 2021-09-11
 9modified: 2022-10-09
10tags:
11    - attack.defense-evasion
12    - attack.t1027.003
13logsource:
14    product: linux
15    service: auditd
16detection:
17    selection:
18        type: EXECVE
19        a0: steghide
20        a1: embed
21        a2:
22            - '-cf'
23            - '-ef'
24        a4:
25            - '-cf'
26            - '-ef'
27    condition: selection
28falsepositives:
29    - Unknown
30level: low

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