Detectionmediumtest

Potential Ransomware or Unauthorized MBR Tampering Via Bcdedit.EXE

Detects potential malicious and unauthorized usage of bcdedit.exe

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@neu5ronCreated Thu Feb 07Updated Wed Feb 15c9fbe8e9-119d-40a6-9b59-dd58a5d84429windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection_img:
        - Image|endswith: '\bcdedit.exe'
        - OriginalFileName: 'bcdedit.exe'
    selection_cli:
        CommandLine|contains:
            - 'delete'
            - 'deletevalue'
            - 'import'
            - 'safeboot'
            - 'network'
    condition: all of selection_*