New

The executive guide to generative AI

Read more
About usPartnersSupport|Login
IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Suspicious PDF Reader Child Process Suspicious PowerShell Engine ImageLoad »
Elastic Docs ›Elastic Security Solution [7.16] ›Detections and alerts ›Prebuilt rule reference

Suspicious Portable Executable Encoded in Powershell Script

edit
IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Suspicious Portable Executable Encoded in Powershell Script

edit

This rule detects the presence of Portable Executables in a PowerShell Script by Looking for its encoded header. Attackers embed PEs into PowerShell Scripts for Injecting them into the memory, avoiding defenses by not writing to disk.,

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

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Execution

Version: 1

Added (Elastic Stack release): 7.16.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

edit
event.code:"4104" and powershell.file.script_block_text : (
TVqQAAMAAAAEAAAA )

Threat mapping

edit

Framework: MITRE ATT&CKTM

« Suspicious PDF Reader Child Process Suspicious PowerShell Engine ImageLoad »
Was this helpful?
Feedback