PowerShell Suspicious Script with Screenshot Capabilities

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PowerShell Suspicious Script with Screenshot Capabilities

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Detects PowerShell scripts that can take screenshots, which is a common feature in post-exploitation kits and remote access tools (RATs).

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-windows.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Version: 2 (version history)

Added (Elastic Stack release): 8.0.0

Last modified (Elastic Stack release): 8.1.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and powershell.file.script_block_text : (
CopyFromScreen and (System.Drawing.Bitmap or Drawing.Bitmap) )

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 2 (8.1.0 release)
  • Formatting only