Detectionhightest

Suspicious Download From Direct IP Via Bitsadmin

Detects usage of bitsadmin downloading a file using an URL that contains an IP

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Florian Roth (Nextron Systems)Created Tue Jun 28Updated Wed Feb 1599c840f2-2012-46fd-9141-c761987550efwindows

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: '\bitsadmin.exe'
        - OriginalFileName: 'bitsadmin.exe'
    selection_flags:
        CommandLine|contains:
            - ' /transfer '
            - ' /create '
            - ' /addfile '
    selection_extension:
        CommandLine|contains:
            - '://1'
            - '://2'
            - '://3'
            - '://4'
            - '://5'
            - '://6'
            - '://7'
            - '://8'
            - '://9'
    filter_seven_zip:
        CommandLine|contains: '://7-' # For https://7-zip.org/
    condition: all of selection_* and not 1 of filter_*