{"id":"bf361876-6620-407a-812f-bfe11e51e924","title":"Compressed File Extraction Via Tar.EXE","description":"Detects execution of \"tar.exe\" in order to extract compressed file.\nAdversaries may abuse various utilities in order to decompress data to avoid detection.\n","author":"AdmU3","status":"test","level":"low","date":"2023-12-19","modified":"","tags":["attack.collection","attack.exfiltration","attack.t1560","attack.t1560.001"],"technique_ids":["T1560","T1560.001"],"logsource":{"product":"windows","category":"process_creation"},"falsepositives":["Likely"],"references":["https://unit42.paloaltonetworks.com/chromeloader-malware/","https://lolbas-project.github.io/lolbas/Binaries/Tar/","https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/cicada-apt10-japan-espionage"],"source_path":"rules/windows/process_creation/proc_creation_win_tar_extraction.yml","source_sha256":"7c165ccf25c89fdc79709792a85bca1bbd3eeed1eb19e5563b7106f3c382b085","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_tar_extraction.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Compressed File Extraction Via Tar.EXE\nid: bf361876-6620-407a-812f-bfe11e51e924\nstatus: test\ndescription: |\n    Detects execution of \"tar.exe\" in order to extract compressed file.\n    Adversaries may abuse various utilities in order to decompress data to avoid detection.\nreferences:\n    - https://unit42.paloaltonetworks.com/chromeloader-malware/\n    - https://lolbas-project.github.io/lolbas/Binaries/Tar/\n    - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/cicada-apt10-japan-espionage\nauthor: AdmU3\ndate: 2023-12-19\ntags:\n    - attack.collection\n    - attack.exfiltration\n    - attack.t1560\n    - attack.t1560.001\nlogsource:\n    product: windows\n    category: process_creation\ndetection:\n    selection_img:\n        - Image|endswith: '\\tar.exe'\n        - OriginalFileName: 'bsdtar'\n    selection_extract:\n        CommandLine|contains: '-x'\n    condition: all of selection_*\nfalsepositives:\n    - Likely\nlevel: low\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1560","id":"T1560","name":"Archive Collected Data","page":"techniques/enterprise/T1560/"},{"key":"enterprise/T1560.001","id":"T1560.001","name":"Archive via Utility","page":"techniques/enterprise/T1560.001/"}],"data_path":"data/detection-rules/bf361876-6620-407a-812f-bfe11e51e924.json","kind":"sigma"}