Event ID 400 —

Provider: PowerShell
Channel: Windows PowerShell
Level: Informational
Collection Priority: Recommended (ASD, others)

Fields #

Name	Description
`Data_0`	—
`Data_1`	—
`Data_2`	—
`Binary`	—

Example Event #

{
  "system": {
    "provider": "PowerShell",
    "guid": "",
    "event_source_name": "",
    "event_id": 400,
    "version": 0,
    "level": 4,
    "task": 4,
    "opcode": 0,
    "keywords": 36028797018963968,
    "time_created": "2023-11-06T01:18:31.405203+00:00",
    "event_record_id": 365,
    "correlation": {},
    "execution": {
      "process_id": 12192,
      "thread_id": 0
    },
    "channel": "Windows PowerShell",
    "computer": "WinDev2310Eval",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "Data_0": "Available",
    "Data_1": "None",
    "Data_2": "\tNewEngineState=Available\r\n\tPreviousEngineState=None\r\n\r\n\tSequenceNumber=13\r\n\r\n\tHostName=ConsoleHost\r\n\tHostVersion=5.1.22621.2428\r\n\tHostId=4913f17e-97b6-4a6b-87a8-c754ea3b2fc8\r\n\tHostApplication=powershell.exe -NoProfile -Command & {if($PSVersionTable.PSVersion.Major -ge 3){Import-Module 'C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\Tools\\\\Microsoft.VisualStudio.DevShell.dll'; Send-VsDevShellTelemetry -NewInstanceType Cmd; }}\r\n\tEngineVersion=5.1.22621.2428\r\n\tRunspaceId=fb50de9f-94e8-415e-a531-420630257558\r\n\tPipelineId=\r\n\tCommandName=\r\n\tCommandType=\r\n\tScriptName=\r\n\tCommandPath=\r\n\tCommandLine=",
    "Binary": ""
  },
  "message": ""
}

Detection Rules #

View all rules referencing this event →

Sigma # view in reference

Nslookup PowerShell Download Cradle source medium: Detects a powershell download cradle using nslookup. This cradle uses nslookup to extract payloads from DNS records.
Delete Volume Shadow Copies Via WMI With PowerShell source high: Shadow Copies deletion using operating systems utilities via PowerShell
PowerShell Downgrade Attack - PowerShell source medium: Detects PowerShell downgrade attack by comparing the host versions with the actually used engine version 2.0

Show 6 more (9 total)

PowerShell Called from an Executable Version Mismatch source high: Detects PowerShell called from an executable by the version mismatch method
Netcat The Powershell Version source medium: Adversaries may use a non-application layer protocol for communication between host and C2 server or among infected hosts within a network
Remote PowerShell Session (PS Classic) source low: Detects remote PowerShell sessions
Renamed Powershell Under Powershell Channel source low: Detects a renamed Powershell execution, which is a common technique used to circumvent security controls and bypass detection logic that's dependent on process names and process paths.
Suspicious PowerShell Download source medium: Detects suspicious PowerShell download command
Use Get-NetTCPConnection source low: Adversaries may attempt to get a listing of network connections to or from the compromised system they are currently accessing or from remote systems by querying for information over the network.

References #

Microsoft Learn https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_logging_windows
Example event sourced from https://github.com/NextronSystems/evtx-baseline