{"id":"d27ab432-2199-483f-a297-03633c05bae6","title":"OS Architecture Discovery Via Grep","description":"Detects the use of grep to identify information about the operating system architecture. Often combined beforehand with the execution of \"uname\" or \"cat /proc/cpuinfo\"\n","author":"Joseliyo Sanchez, @Joseliyo_Jstnk","status":"test","level":"low","date":"2023-06-02","modified":"","tags":["attack.discovery","attack.t1082"],"technique_ids":["T1082"],"logsource":{"category":"process_creation","product":"linux"},"falsepositives":["Unknown"],"references":["https://blogs.jpcert.or.jp/en/2023/05/gobrat.html","https://jstnk9.github.io/jstnk9/research/GobRAT-Malware/","https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection","https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection"],"source_path":"rules/linux/process_creation/proc_creation_lnx_grep_os_arch_discovery.yml","source_sha256":"0f2b9c818e3248ec64bcc2964d7d3958dd0c868075c7cb20658b919f0da0c596","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/process_creation/proc_creation_lnx_grep_os_arch_discovery.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: OS Architecture Discovery Via Grep\nid: d27ab432-2199-483f-a297-03633c05bae6\nstatus: test\ndescription: |\n    Detects the use of grep to identify information about the operating system architecture. Often combined beforehand with the execution of \"uname\" or \"cat /proc/cpuinfo\"\nreferences:\n    - https://blogs.jpcert.or.jp/en/2023/05/gobrat.html\n    - https://jstnk9.github.io/jstnk9/research/GobRAT-Malware/\n    - https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection\n    - https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection\nauthor: Joseliyo Sanchez, @Joseliyo_Jstnk\ndate: 2023-06-02\ntags:\n    - attack.discovery\n    - attack.t1082\nlogsource:\n    category: process_creation\n    product: linux\ndetection:\n    selection_process:\n        Image|endswith: '/grep'\n    selection_architecture:\n        CommandLine|endswith:\n            - 'aarch64'\n            - 'arm'\n            - 'i386'\n            - 'i686'\n            - 'mips'\n            - 'x86_64'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1082","id":"T1082","name":"System Information Discovery","page":"techniques/enterprise/T1082/"}],"data_path":"data/detection-rules/d27ab432-2199-483f-a297-03633c05bae6.json","kind":"sigma"}