51 lines
1.9 KiB
YAML
51 lines
1.9 KiB
YAML
title: Suspicious PowerShell Keywords
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author: Florian Roth, Perez Diego (@darkquassar)
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date: 2019/02/11
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description: Detects keywords that could indicate the use of some PowerShell exploitation
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framework
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detection:
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SELECTION_1:
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ScriptBlockText: '*System.Reflection.Assembly.Load($*'
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SELECTION_10:
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ScriptBlockText: '*http://127.0.0.1*'
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SELECTION_2:
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ScriptBlockText: '*[System.Reflection.Assembly]::Load($*'
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SELECTION_3:
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ScriptBlockText: '*[Reflection.Assembly]::Load($*'
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SELECTION_4:
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ScriptBlockText: '*System.Reflection.AssemblyName*'
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SELECTION_5:
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ScriptBlockText: '*Reflection.Emit.AssemblyBuilderAccess*'
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SELECTION_6:
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ScriptBlockText: '*Runtime.InteropServices.DllImportAttribute*'
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SELECTION_7:
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ScriptBlockText: '*SuspendThread*'
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SELECTION_8:
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ScriptBlockText: '*rundll32*'
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SELECTION_9:
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ScriptBlockText: '*Invoke-WMIMethod*'
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condition: (SELECTION_1 or SELECTION_2 or SELECTION_3 or SELECTION_4 or SELECTION_5
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or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10)
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falsepositives:
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- Penetration tests
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id: 1f49f2ab-26bc-48b3-96cc-dcffbc93eadf
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level: high
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logsource:
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category: ps_script
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definition: Script block logging must be enabled for 4104
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product: windows
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modified: 2021/10/16
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references:
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- https://posts.specterops.io/entering-a-covenant-net-command-and-control-e11038bcf462
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- https://github.com/PowerShellMafia/PowerSploit/blob/master/CodeExecution/Invoke-ReflectivePEInjection.ps1
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- https://github.com/hlldz/Invoke-Phant0m/blob/master/Invoke-Phant0m.ps1
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- https://gist.github.com/MHaggis/0dbe00ad401daa7137c81c99c268cfb7
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status: experimental
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tags:
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- attack.execution
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- attack.t1059.001
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- attack.t1086
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yml_filename: powershell_suspicious_keywords.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/powershell/powershell_script
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