sigmamediumHunting

Potential Dropper Script Execution Via WScript/CScript

Detects wscript/cscript executions of scripts located in user directories

MITRE ATT&CK

execution

Detection Query

selection_exec:
  Image|endswith:
    - \wscript.exe
    - \cscript.exe
selection_paths:
  CommandLine|contains:
    - :\Temp\
    - :\Tmp\
    - :\Users\Public\
    - :\Windows\Temp\
    - \AppData\Local\Temp\
selection_ext:
  CommandLine|contains:
    - .js
    - .jse
    - .vba
    - .vbe
    - .vbs
    - .wsf
condition: all of selection_*

Author

Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community, Nasreddine Bencherchali (Nextron Systems)

Created

2019-01-16

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.executionattack.t1059.005attack.t1059.007

Raw Content

title: Potential Dropper Script Execution Via WScript/CScript
id: cea72823-df4d-4567-950c-0b579eaf0846
related:
    - id: 1e33157c-53b1-41ad-bbcc-780b80b58288
      type: similar
status: test
description: Detects wscript/cscript executions of scripts located in user directories
references:
    - https://thedfirreport.com/2023/10/30/netsupport-intrusion-results-in-domain-compromise/
    - https://redcanary.com/blog/gootloader/
author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community, Nasreddine Bencherchali (Nextron Systems)
date: 2019-01-16
modified: 2024-01-30
tags:
    - attack.execution
    - attack.t1059.005
    - attack.t1059.007
logsource:
    category: process_creation
    product: windows
detection:
    selection_exec:
        Image|endswith:
            - '\wscript.exe'
            - '\cscript.exe'
    selection_paths:
        CommandLine|contains:
            - ':\Temp\'
            - ':\Tmp\'
            - ':\Users\Public\'
            - ':\Windows\Temp\'
            - '\AppData\Local\Temp\'
    selection_ext:
        CommandLine|contains:
            - '.js'
            - '.jse'
            - '.vba'
            - '.vbe'
            - '.vbs'
            - '.wsf'
    condition: all of selection_*
falsepositives:
    - Some installers might generate a similar behavior. An initial baseline is required
level: medium