title: WScript or CScript Dropper
author: Margaritis Dimitrios (idea), Florian Roth (rule), oscd.community
date: 2019/01/16
description: Detects wscript/cscript executions of scripts located in user directories
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_10:
        CommandLine: '*.vbs*'
    SELECTION_11:
        ParentImage: '*\winzip*'
    SELECTION_2:
        Image: '*\wscript.exe'
    SELECTION_3:
        Image: '*\cscript.exe'
    SELECTION_4:
        CommandLine: '*C:\Users\\*'
    SELECTION_5:
        CommandLine: '*C:\ProgramData\\*'
    SELECTION_6:
        CommandLine: '*.jse*'
    SELECTION_7:
        CommandLine: '*.vbe*'
    SELECTION_8:
        CommandLine: '*.js*'
    SELECTION_9:
        CommandLine: '*.vba*'
    condition: (SELECTION_1 and ((SELECTION_2 or SELECTION_3) and (SELECTION_4 or
        SELECTION_5) and (SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9
        or SELECTION_10)) and  not (SELECTION_11))
falsepositives:
- Winzip
- Other self-extractors
fields:
- CommandLine
- ParentCommandLine
id: cea72823-df4d-4567-950c-0b579eaf0846
level: high
logsource:
    category: process_creation
    product: windows
modified: 2020/09/01
status: experimental
tags:
- attack.execution
- attack.t1059.005
- attack.t1059.007
- attack.defense_evasion
- attack.t1064
yml_filename: win_malware_script_dropper.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation