Local Admin Group Membership Added
highWindowsSingle eventexperimentalsigma.net_localgroup_admin_add · v1.0.0
What it detects
Adding an account to the local Administrators group — privilege abuse
MITRE ATT&CK mapping
- T1098Account Manipulation· Persistence
False positives and triage
Converted from Sigma; review before enabling.
The rule
Declarative YAML read by the detection engine — data, never executed. Confidence 70%. Source: rules/sigma/sigma.net_localgroup_admin_add.yaml, licensed under the Detection Rule License 1.1.
id: sigma.net_localgroup_admin_add
version: 1.0.0
status: experimental
severity: high
confidence: 0.7
platforms:
- windows
mitre_techniques:
- T1098
description: Adding an account to the local Administrators group — privilege abuse (Sigma sample)
match:
event_category: process
command_line_contains_any:
- localgroup administrators
- localgroup administrateur
- group /add /domain
false_positive_guidance: Converted from Sigma; review before enabling.
Adapted from the SigmaHQ rule “Local Admin Group Membership Added”, distributed under the Detection Rule License 1.1. SigmaHQ.
Related detections
Run this rule on your own logs — offline
KIROSEC runs this rule and the rest of the library over Windows, Linux, macOS and cloud audit logs on the analyst's own machine. Every alert links to the events that raised it, and nothing leaves the device.