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Elastic Docs ›Elastic Security Solution [7.14] ›Detections and alerts ›Prebuilt rule reference

Renamed AutoIt Scripts Interpreter

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Renamed AutoIt Scripts Interpreter

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Identifies a suspicious AutoIt process execution. Malware written as an AutoIt script tends to rename the AutoIt executable to avoid detection.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • 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
  • Defense Evasion

Version: 4 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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process where event.type in ("start", "process_started", "info") and
process.pe.original_file_name : "AutoIt*.exe" and not process.name :
"AutoIt*.exe"

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 4 (7.12.0 release)
  • Formatting only
Version 3 (7.11.2 release)
  • Formatting only
Version 2 (7.11.0 release)

  • Updated query, changed from:

    event.category:process AND event.type:(start OR process_started) AND (
process.pe.original_file_name:/[aA][uU][tT][oO][iI][tT]\d\.[eE][xX][eE
]/ OR winlog.event_data.OriginalFileName:/[aA][uU][tT][oO][iI][tT]\d\.
[eE][xX][eE]/) AND NOT
process.name:/[aA][uU][tT][oO][iI][tT]\d{1,3}\.[eE][xX][eE]/
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