{"id":"36fbec91-fa1b-4d5d-8df1-8d8edcb632ad","title":"Code Executed Via Office Add-in XLL File","description":"Adversaries may abuse Microsoft Office add-ins to obtain persistence on a compromised system.\nOffice add-ins can be used to add functionality to Office programs\n","author":"frack113","status":"test","level":"high","date":"2021-12-28","modified":"","tags":["attack.persistence","attack.t1137.006"],"technique_ids":["T1137.006"],"logsource":{"product":"windows","category":"ps_script","definition":"Requirements: Script Block Logging must be enabled"},"falsepositives":["Unknown"],"references":["https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1137.006/T1137.006.md"],"source_path":"rules/windows/powershell/powershell_script/posh_ps_office_comobject_registerxll.yml","source_sha256":"1eef0f779dbcdfb88c72d3dc4d899d029c4d237df4e227596a445fe41dfc05d2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/powershell/powershell_script/posh_ps_office_comobject_registerxll.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Code Executed Via Office Add-in XLL File\nid: 36fbec91-fa1b-4d5d-8df1-8d8edcb632ad\nstatus: test\ndescription: |\n    Adversaries may abuse Microsoft Office add-ins to obtain persistence on a compromised system.\n    Office add-ins can be used to add functionality to Office programs\nreferences:\n    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1137.006/T1137.006.md\nauthor: frack113\ndate: 2021-12-28\ntags:\n    - attack.persistence\n    - attack.t1137.006\nlogsource:\n    product: windows\n    category: ps_script\n    definition: 'Requirements: Script Block Logging must be enabled'\ndetection:\n    selection:\n        ScriptBlockText|contains|all:\n            - 'new-object '\n            - '-ComObject '\n            - '.application'\n            - '.RegisterXLL'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1137.006","id":"T1137.006","name":"Add-ins","page":"techniques/enterprise/T1137.006/"}],"data_path":"data/detection-rules/36fbec91-fa1b-4d5d-8df1-8d8edcb632ad.json","kind":"sigma"}