Regedit as Trusted Installer — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2021-05-27 / 2022-10-09.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 90922ca0e75bb783c18083365a787b2a64dee207d74893d08d4f49fdadde5418

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Regedit as Trusted Installer
id: 883835a7-df45-43e4-bf1d-4268768afda4
status: test
description: Detects a regedit started with TrustedInstaller privileges or by ProcessHacker.exe
references:
    - https://twitter.com/1kwpeter/status/1397816101455765504
author: Florian Roth (Nextron Systems)
date: 2021-05-27
modified: 2022-10-09
tags:
    - attack.privilege-escalation
    - attack.t1548
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\regedit.exe'
        ParentImage|endswith:
            - '\TrustedInstaller.exe'
            - '\ProcessHacker.exe'
    condition: selection
falsepositives:
    - Unlikely
level: high

Original YAML and metadata in JSON

False positives

• Unlikely

Source references

• https://twitter.com/1kwpeter/status/1397816101455765504