UAC Bypass via ICMLuaUtil Elevated COM Interface

edit

UAC Bypass via ICMLuaUtil Elevated COM Interface

edit

Identifies User Account Control (UAC) bypass attempts via the ICMLuaUtil Elevated COM interface. Attackers may attempt to bypass UAC to stealthily execute code with elevated permissions.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: high

Risk score: 73

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
  • Privilege Escalation

Version: 101 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

edit

Rule query

edit
process where event.type == "start" and process.parent.name ==
"dllhost.exe" and process.parent.args in
("/Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}",
"/Processid:{D2E7041B-2927-42FB-8E9F-7CE93B6DC937}") and
process.pe.original_file_name != "WerFault.exe"

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 101 (8.5.0 release)
  • Updated query, changed from:

    process where event.type in ("start", "process_started") and
    process.parent.name == "dllhost.exe" and process.parent.args in
    ("/Processid:{3E5FC7F9-9A51-4367-9063-A120244FBEC7}",
    "/Processid:{D2E7041B-2927-42FB-8E9F-7CE93B6DC937}") and
    process.pe.original_file_name != "WerFault.exe"
Version 7 (8.4.0 release)
  • Formatting only
Version 5 (8.2.0 release)
  • Formatting only
Version 4 (7.15.0 release)
  • Formatting only
Version 3 (7.12.0 release)
  • Formatting only
Version 2 (7.11.2 release)
  • Formatting only