44 lines
1.2 KiB
YAML
44 lines
1.2 KiB
YAML
title: File or Folder Permissions Modifications
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author: Jakob Weinzettl, oscd.community
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date: 2019/10/23
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description: Detects a file or folder's permissions being modified.
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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Image: '*\takeown.exe'
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SELECTION_3:
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Image: '*\cacls.exe'
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SELECTION_4:
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Image: '*\icacls.exe'
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SELECTION_5:
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CommandLine: '*/grant*'
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SELECTION_6:
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Image: '*\attrib.exe'
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SELECTION_7:
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CommandLine: '*-r*'
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condition: (SELECTION_1 and (((SELECTION_2 or SELECTION_3 or SELECTION_4) and
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SELECTION_5) or (SELECTION_6 and SELECTION_7)))
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falsepositives:
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- Users interacting with the files on their own (unlikely unless privileged users).
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fields:
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- ComputerName
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- User
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- CommandLine
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id: 37ae075c-271b-459b-8d7b-55ad5f993dd8
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level: medium
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logsource:
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category: process_creation
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product: windows
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modified: 2019/11/08
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1222.001/T1222.001.md
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1222.001
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- attack.t1222
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yml_filename: win_file_permission_modifications.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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