PowerShell Script with Remote Execution Capabilities via WinRMedit
Identifies the use of Cmdlets and methods related to remote execution activities using WinRM. Attackers can abuse WinRM to perform lateral movement using built-in tools.
Rule type: query
Rule indices:
- winlogbeat-*
- logs-windows.powershell*
Severity: low
Risk score: 21
Runs every: 60m
Searches indices from: now-119m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Lateral Movement
- Tactic: Execution
- Data Source: PowerShell Logs
- Rule Type: BBR
Version: 106
Rule authors:
- Elastic
Rule license: Elastic License v2
Setupedit
Setup
The PowerShell Script Block Logging logging policy must be enabled. Steps to implement the logging policy with Advanced Audit Configuration:
Computer Configuration > Administrative Templates > Windows PowerShell > Turn on PowerShell Script Block Logging (Enable)
Steps to implement the logging policy via registry:
reg add "hklm\SOFTWARE\Policies\Microsoft\Windows\PowerShell\ScriptBlockLogging" /v EnableScriptBlockLogging /t REG_DWORD /d 1
Rule queryedit
event.category:process and host.os.type:windows and
powershell.file.script_block_text : (
("Invoke-WmiMethod" or "Invoke-Command" or "Enter-PSSession") and "ComputerName"
) and
not user.id : "S-1-5-18" and
not file.directory : (
"C:\\Program Files\\LogicMonitor\\Agent\\tmp"
) and not
powershell.file.script_block_text : (
"Export-ModuleMember -Function @('Invoke-Expression''Invoke-Command')" and
"function Invoke-Command {"
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
-
Technique:
- Name: Remote Services
- ID: T1021
- Reference URL: https://attack.mitre.org/techniques/T1021/
-
Sub-technique:
- Name: Windows Remote Management
- ID: T1021.006
- Reference URL: https://attack.mitre.org/techniques/T1021/006/
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: Command and Scripting Interpreter
- ID: T1059
- Reference URL: https://attack.mitre.org/techniques/T1059/
-
Sub-technique:
- Name: PowerShell
- ID: T1059.001
- Reference URL: https://attack.mitre.org/techniques/T1059/001/