PowerShell Suspicious Script with Screenshot Capabilities

Last updated 8 days ago on 2026-01-26

Created 4 years ago on 2021-10-19

About

Detects PowerShell script block content that uses CopyFromScreen with .NET bitmap classes to capture screenshots. Attackers use screen capture to collect on-screen information and credentials.

Tags

Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: CollectionData Source: PowerShell LogsLanguage: kuery

Severity

high

Risk Score

MITRE ATT&CK™

Collection (TA0009)(external, opens in a new tab or window)

↳ Screen Capture (T1113)(external, opens in a new tab or window)

Execution (TA0002)(external, opens in a new tab or window)

↳ Command and Scripting Interpreter (T1059)(external, opens in a new tab or window)

License

Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type: Query (Kibana Query Language)
Integration Pack: Prebuilt Security Detection Rules
Index Patterns: winlogbeat-*logs-windows.powershell*
Related Integrations: windows(external, opens in a new tab or window)
Query

✄𐘗text code block:
✄𐘗event.category:process and host.os.type:windows and
  powershell.file.script_block_text : (
    CopyFromScreen and
    ("System.Drawing.Bitmap" or "Drawing.Bitmap")
  ) and not user.id : "S-1-5-18"

Install detection rules in Elastic Security

Detect PowerShell Suspicious Script with Screenshot Capabilities in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).