Nasreddine Bencherchali
27 lines
837 B
YAML
27 lines
837 B
YAML
title: Suspicious IO.FileStream
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id: 70ad982f-67c8-40e0-a955-b920c2fa05cb
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status: experimental
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description: Open a handle on the drive volume via the \\.\ DOS device path specifier and perform direct access read of the first few bytes of the volume.
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date: 2022/01/09
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modified: 2022/03/05
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author: frack113
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1006/T1006.md
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logsource:
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product: windows
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category: ps_script
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definition: Script block logging must be enabled
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detection:
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selection:
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ScriptBlockText|contains|all:
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- New-Object
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- IO.FileStream
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- '\\\\.\\'
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condition: selection
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falsepositives:
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- Legitimate PowerShell scripts
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level: medium
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tags:
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- attack.defense_evasion
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- attack.t1070.003
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