Shortcut File Written or Modified for Persistence

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Shortcut File Written or Modified for Persistence

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Identifies files written to or modified in the startup folder by commonly abused processes. Adversaries may use this technique to maintain persistence.

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
  • Persistence

Version: 3 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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file where event.type != "deletion" and user.domain != "NT
AUTHORITY" and file.path :
("C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Windows\\Start
Menu\\Programs\\Startup\\*",
"C:\\ProgramData\\Microsoft\\Windows\\Start
Menu\\Programs\\StartUp\\*") and process.name : ("cmd.exe",
"powershell.exe", "wmic.exe",
"mshta.exe", "pwsh.exe",
"cscript.exe", "wscript.exe",
"regsvr32.exe", "RegAsm.exe",
"rundll32.exe", "EQNEDT32.EXE",
"WINWORD.EXE", "EXCEL.EXE",
"POWERPNT.EXE", "MSPUB.EXE",
"MSACCESS.EXE", "iexplore.exe",
"InstallUtil.exe")

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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