Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
26 lines
821 B
YAML
26 lines
821 B
YAML
title: PowerShell Downgrade Attack - PowerShell
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id: 6331d09b-4785-4c13-980f-f96661356249
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status: test
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description: Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0
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references:
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- http://www.leeholmes.com/blog/2017/03/17/detecting-and-preventing-powershell-downgrade-attacks/
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author: Florian Roth (Nextron Systems), Lee Holmes (idea), Harish Segar (improvements)
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date: 2017-03-22
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modified: 2023-10-27
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tags:
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- attack.defense-evasion
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- attack.execution
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- attack.t1059.001
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logsource:
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product: windows
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category: ps_classic_start
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detection:
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selection:
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Data|contains: 'EngineVersion=2.'
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filter_main:
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Data|contains: 'HostVersion=2.'
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condition: selection and not filter_main
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falsepositives:
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- Unknown
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level: medium
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