diff --git a/rules/linux/auditd/lnx_auditd_steghide_embed_steganography.yml b/rules/linux/auditd/lnx_auditd_steghide_embed_steganography.yml new file mode 100644 index 000000000..584003dcc --- /dev/null +++ b/rules/linux/auditd/lnx_auditd_steghide_embed_steganography.yml @@ -0,0 +1,30 @@ +title: Steganography Hide Files with Steghide +id: ce446a9e-30b9-4483-8e38-d2c9ad0a2280 +description: Detects embeding of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information. +author: 'Pawel Mazur' +status: experimental +date: 2021/09/11 +references: + - https://attack.mitre.org/techniques/T1027/003/ + - https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/ +tags: + - attack.defense_evasion + - attack.t1027.003 +falsepositives: + - None +level: low +logsource: + product: linux + service: auditd +detection: + Steghide: + type: EXECVE + a0: steghide + a1: embed + a2: + - '-cf' + - '-ef' + a4: + - '-cf' + - '-ef' + condition: Steghide diff --git a/rules/linux/auditd/lnx_auditd_steghide_extract_steganography.yml b/rules/linux/auditd/lnx_auditd_steghide_extract_steganography.yml new file mode 100644 index 000000000..87fe4c423 --- /dev/null +++ b/rules/linux/auditd/lnx_auditd_steghide_extract_steganography.yml @@ -0,0 +1,28 @@ +title: Steganography Extract Files with Steghide +id: a5a827d9-1bbe-4952-9293-c59d897eb41b +description: Detects extraction of files with usage of steghide binary, the adversaries may use this technique to prevent the detection of hidden information. +author: 'Pawel Mazur' +status: experimental +date: 2021/09/11 +references: + - https://attack.mitre.org/techniques/T1027/003/ + - https://vitux.com/how-to-hide-confidential-files-in-images-on-debian-using-steganography/ +tags: + - attack.defense_evasion + - attack.t1027.003 +falsepositives: + - None +level: low +logsource: + product: linux + service: auditd +detection: + Steghide: + type: EXECVE + a0: steghide + a1: extract + a2: '-sf' + a3|endswith: + - '.jpg' + - '.png' + condition: Steghide