{"id":"e1561947-b4e3-4a74-9bdd-83baed21bdb5","title":"Invoke-Obfuscation Via Use Clip","description":"Detects Obfuscated Powershell via use Clip.exe in Scripts","author":"Nikita Nazarov, oscd.community","status":"test","level":"high","date":"2020-10-09","modified":"2026-03-16","tags":["attack.stealth","attack.t1027","attack.execution","attack.t1059.001"],"technique_ids":["T1027","T1059.001"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/SigmaHQ/sigma/issues/1009"],"source_path":"rules/windows/process_creation/proc_creation_win_hktl_invoke_obfuscation_via_use_clip.yml","source_sha256":"493b15801c9c79da93433b9553a5c89795e62486e48e0d5b720715de13c49085","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_hktl_invoke_obfuscation_via_use_clip.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Invoke-Obfuscation Via Use Clip\nid: e1561947-b4e3-4a74-9bdd-83baed21bdb5\nstatus: test\ndescription: Detects Obfuscated Powershell via use Clip.exe in Scripts\nreferences:\n    - https://github.com/SigmaHQ/sigma/issues/1009 # (Task29)\nauthor: Nikita Nazarov, oscd.community\ndate: 2020-10-09\nmodified: 2026-03-16\ntags:\n    - attack.stealth\n    - attack.t1027\n    - attack.execution\n    - attack.t1059.001\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        # Example 1: C:\\WINdoWS\\sySteM32\\CMd /c \" ECho\\Invoke-Expression (New-Object Net.WebClient).DownloadString|Clip.Exe&&C:\\WINdoWS\\sySteM32\\CMd /c pOWerSheLl -STa . ( \\\"{2}{0}{1}\\\"-f'dd-',(\\\"{0}{1}\\\" -f 'T','ype' ),'A' ) -Assembly ( \\\"{4}{1}{3}{0}{2}\\\"-f (\\\"{0}{1}\\\" -f 'nd','ow'),( \\\"{1}{0}\\\"-f'.W','stem' ),( \\\"{2}{1}{0}\\\" -f 'rms','Fo','s.'),'i','Sy') ; ${exeCUtIOnCONTeXT}.\\\"INV`oKECOM`m`ANd\\\".\\\"INV`ok`ESCriPT\\\"( ( [sYSteM.wiNDoWS.forMs.ClIPboaRD]::( \\\"{2}{0}{1}\\\" -f'Ex','t',(\\\"{0}{1}\\\" -f'Get','t' ) ).\\\"iNvo`Ke\\\"( )) ) ; [System.Windows.Forms.Clipboard]::(\\\"{1}{0}\\\" -f 'ar','Cle' ).\\\"in`V`oKE\\\"( )\"\n        # Example 2: C:\\WINDowS\\sYsTEM32\\CmD.eXE /C\" echo\\Invoke-Expression (New-Object Net.WebClient).DownloadString| C:\\WIndOWs\\SYSteM32\\CLip &&C:\\WINDowS\\sYsTEM32\\CmD.eXE /C POWERSHeLL -sT -noL [Void][System.Reflection.Assembly]::( \\\"{0}{3}{4}{1}{2}\\\" -f( \\\"{0}{1}\\\"-f'Lo','adW' ),( \\\"{0}{1}\\\"-f 'Par','t'),( \\\"{0}{1}{2}\\\"-f 'ial','N','ame'),'it','h' ).\\\"in`VO`KE\\\"( ( \\\"{3}{1}{4}{5}{2}{0}\\\"-f'rms','ystem.Windo','Fo','S','w','s.' )) ; ( [wIndows.fOrms.cLIPBOArD]::( \\\"{1}{0}\\\"-f'T',( \\\"{1}{0}\\\" -f'tEX','gET' )).\\\"i`Nvoke\\\"( ) ) ^^^| ^^^& ( ( ^^^& ( \\\"{2}{1}{0}\\\"-f 'e',( \\\"{2}{1}{0}\\\"-f'IABl','aR','v' ),( \\\"{0}{1}\\\"-f'Get','-' ) ) ( \\\"{1}{0}\\\"-f'*','*MDr' )).\\\"n`Ame\\\"[3,11,2]-jOin'') ; [Windows.Forms.Clipboard]::( \\\"{0}{1}\\\" -f (\\\"{1}{0}\\\"-f'tT','Se' ),'ext').\\\"in`VoKe\\\"(' ' )\"\n        CommandLine|re: '(?i)echo.*clip.*&&.*(?:Clipboard|i`?n`?v`?o`?k`?e`?)'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1027","id":"T1027","name":"Obfuscated Files or Information","page":"techniques/enterprise/T1027/"},{"key":"enterprise/T1059.001","id":"T1059.001","name":"PowerShell","page":"techniques/enterprise/T1059.001/"}],"data_path":"data/detection-rules/e1561947-b4e3-4a74-9bdd-83baed21bdb5.json","kind":"sigma"}