41 lines
1.2 KiB
YAML
41 lines
1.2 KiB
YAML
title: Possible Ransomware or Unauthorized MBR Modifications
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author: '@neu5ron'
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date: 2019/02/07
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description: Detects, possibly, malicious unauthorized usage of bcdedit.exe
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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: '*\bcdedit.exe'
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SELECTION_3:
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CommandLine: '*delete*'
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SELECTION_4:
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CommandLine: '*deletevalue*'
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SELECTION_5:
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CommandLine: '*import*'
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SELECTION_6:
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CommandLine: '*safeboot*'
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SELECTION_7:
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CommandLine: '*network*'
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condition: (SELECTION_1 and SELECTION_2 and (SELECTION_3 or SELECTION_4 or SELECTION_5
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or SELECTION_6 or SELECTION_7))
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id: c9fbe8e9-119d-40a6-9b59-dd58a5d84429
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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: 2021/06/18
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references:
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- https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/bcdedit--set
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- https://twitter.com/malwrhunterteam/status/1372536434125512712/photo/2
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1070
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- attack.persistence
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- attack.t1542.003
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- attack.t1067
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yml_filename: win_susp_bcdedit.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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