frack113
34 lines
1.0 KiB
YAML
34 lines
1.0 KiB
YAML
title: Hidden User Creation
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id: b22a5b36-2431-493a-8be1-0bae56c28ef3
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status: test
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description: Detects creation of a hidden user account on macOS (UserID < 500) or with IsHidden option
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author: Daniil Yugoslavskiy, oscd.community
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1564.002/T1564.002.md
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date: 2020/10/10
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modified: 2021/11/27
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logsource:
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category: process_creation
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product: macos
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detection:
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dscl_create:
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Image|endswith: '/dscl'
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CommandLine|contains: 'create'
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id_below_500:
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CommandLine|contains: UniqueID
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CommandLine|re: '([0-9]|[1-9][0-9]|[1-4][0-9]{2})'
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ishidden_option_declaration:
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CommandLine|contains: 'IsHidden'
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ishidden_option_confirmation:
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CommandLine|contains:
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- 'true'
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- 'yes'
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- '1'
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condition: dscl_create and id_below_500 or dscl_create and (ishidden_option_declaration and ishidden_option_confirmation)
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falsepositives:
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- Legitimate administration activities
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level: medium
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tags:
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- attack.defense_evasion
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- attack.t1564.002
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