frack113
37 lines
936 B
YAML
37 lines
936 B
YAML
title: Suspicious Reg Add BitLocker
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id: 0e0255bf-2548-47b8-9582-c0955c9283f5
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status: experimental
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description: Suspicious add key for BitLocker
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references:
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- https://thedfirreport.com/2021/11/15/exchange-exploit-leads-to-domain-wide-ransomware/
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tags:
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- attack.impact
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- attack.t1486
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author: frack113
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date: 2021/11/15
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logsource:
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category: process_creation
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product: windows
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detection:
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set:
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CommandLine|contains|all:
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- 'REG'
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- 'ADD'
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- 'HKLM\SOFTWARE\Policies\Microsoft\FVE'
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- '/v'
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- '/f'
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key:
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CommandLine|contains:
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- 'EnableBDEWithNoTPM'
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- 'UseAdvancedStartup'
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- 'UseTPM'
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- 'UseTPMKey'
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- 'UseTPMKeyPIN'
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- 'RecoveryKeyMessageSource'
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- 'UseTPMPIN'
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- 'RecoveryKeyMessage'
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condition: set and key
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falsepositives:
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- unknown
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level: medium
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