IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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PowerShell Suspicious Script with Clipboard Retrieval Capabilities

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PowerShell Suspicious Script with Clipboard Retrieval Capabilities

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Detects PowerShell scripts that can get the contents of the clipboard, which attackers can abuse to retrieve sensitive information like credentials, messages, etc.

Rule type: query

Rule indices:

winlogbeat-*
logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

Elastic
Host
Windows
Threat Detection
Collection
PowerShell

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and
  (powershell.file.script_block_text : (
    "Windows.Clipboard" or
    "Windows.Forms.Clipboard" or
    "Windows.Forms.TextBox"
   ) and
   powershell.file.script_block_text : (
    "]::GetText" or
    ".Paste()"
  )) or powershell.file.script_block_text : "Get-Clipboard"
  and not user.id : "S-1-5-18"

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
Technique:
- Name: Clipboard Data
- ID: T1115
- Reference URL: https://attack.mitre.org/techniques/T1115/
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/

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