{"id":"a0459f02-ac51-4c09-b511-b8c9203fc429","title":"Potential Process Execution Proxy Via CL_Invocation.ps1","description":"Detects calls to \"SyncInvoke\" that is part of the \"CL_Invocation.ps1\" script to proxy execution using \"System.Diagnostics.Process\"","author":"Nasreddine Bencherchali (Nextron Systems), oscd.community, Natalia Shornikova","status":"test","level":"medium","date":"2020-10-14","modified":"2023-08-17","tags":["attack.stealth","attack.t1216"],"technique_ids":["T1216"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://lolbas-project.github.io/lolbas/Scripts/Cl_invocation/","https://twitter.com/bohops/status/948061991012327424"],"source_path":"rules/windows/process_creation/proc_creation_win_powershell_cl_invocation.yml","source_sha256":"1197578f16f899ad01565388e88b6c2823c687a50cf9a99e336a3d98a81c57c2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_powershell_cl_invocation.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Process Execution Proxy Via CL_Invocation.ps1\nid: a0459f02-ac51-4c09-b511-b8c9203fc429\nstatus: test\ndescription: Detects calls to \"SyncInvoke\" that is part of the \"CL_Invocation.ps1\" script to proxy execution using \"System.Diagnostics.Process\"\nreferences:\n    - https://lolbas-project.github.io/lolbas/Scripts/Cl_invocation/\n    - https://twitter.com/bohops/status/948061991012327424\nauthor: Nasreddine Bencherchali (Nextron Systems), oscd.community, Natalia Shornikova\ndate: 2020-10-14\nmodified: 2023-08-17\ntags:\n    - attack.stealth\n    - attack.t1216\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        # Note: As this function is usually called from within powershell, classical process creation even would not catch it. This will only catch inline calls via \"-Command\" or \"-ScriptBlock\" flags for example.\n        CommandLine|contains: 'SyncInvoke '\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1216","id":"T1216","name":"System Script Proxy Execution","page":"techniques/enterprise/T1216/"}],"data_path":"data/detection-rules/a0459f02-ac51-4c09-b511-b8c9203fc429.json","kind":"sigma"}