{"id":"5e6a80c8-2d45-4633-9ef4-fa2671a39c5c","title":"Suspicious Parent Double Extension File Execution","description":"Detect execution of suspicious double extension files in ParentCommandLine","author":"frack113, Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2023-01-06","modified":"2023-02-28","tags":["attack.stealth","attack.t1036.007"],"technique_ids":["T1036.007"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.virustotal.com/gui/file/7872d8845a332dce517adae9c3389fde5313ff2fed38c2577f3b498da786db68/behavior","https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bluebottle-banks-targeted-africa"],"source_path":"rules/windows/process_creation/proc_creation_win_susp_double_extension_parent.yml","source_sha256":"3ce2c32e8250777b2d095e4f12eeeb4068cd516f16b71c183b55345f06b74c6b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_susp_double_extension_parent.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious Parent Double Extension File Execution\nid: 5e6a80c8-2d45-4633-9ef4-fa2671a39c5c\nrelated:\n    - id: 1cdd9a09-06c9-4769-99ff-626e2b3991b8 # Image/CommandLine\n      type: derived\nstatus: test\ndescription: Detect execution of suspicious double extension files in ParentCommandLine\nreferences:\n    - https://www.virustotal.com/gui/file/7872d8845a332dce517adae9c3389fde5313ff2fed38c2577f3b498da786db68/behavior\n    - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/bluebottle-banks-targeted-africa\nauthor: frack113, Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-01-06\nmodified: 2023-02-28\ntags:\n    - attack.stealth\n    - attack.t1036.007\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        - ParentImage|endswith:\n              - '.doc.lnk'\n              - '.docx.lnk'\n              - '.xls.lnk'\n              - '.xlsx.lnk'\n              - '.ppt.lnk'\n              - '.pptx.lnk'\n              - '.rtf.lnk'\n              - '.pdf.lnk'\n              - '.txt.lnk'\n              - '.doc.js'\n              - '.docx.js'\n              - '.xls.js'\n              - '.xlsx.js'\n              - '.ppt.js'\n              - '.pptx.js'\n              - '.rtf.js'\n              - '.pdf.js'\n              - '.txt.js'\n        - ParentCommandLine|contains:\n              - '.doc.lnk'\n              - '.docx.lnk'\n              - '.xls.lnk'\n              - '.xlsx.lnk'\n              - '.ppt.lnk'\n              - '.pptx.lnk'\n              - '.rtf.lnk'\n              - '.pdf.lnk'\n              - '.txt.lnk'\n              - '.doc.js'\n              - '.docx.js'\n              - '.xls.js'\n              - '.xlsx.js'\n              - '.ppt.js'\n              - '.pptx.js'\n              - '.rtf.js'\n              - '.pdf.js'\n              - '.txt.js'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1036.007","id":"T1036.007","name":"Double File Extension","page":"techniques/enterprise/T1036.007/"}],"data_path":"data/detection-rules/5e6a80c8-2d45-4633-9ef4-fa2671a39c5c.json","kind":"sigma"}