Detection rules › Sigma
New User Created Via Net.EXE
Identifies the creation of local users via the net.exe command.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1136.001 Create Account: Local Account |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
Rule body yaml
title: New User Created Via Net.EXE
id: cd219ff3-fa99-45d4-8380-a7d15116c6dc
related:
- id: b9f0e6f5-09b4-4358-bae4-08408705bd5c
type: similar
status: test
description: Identifies the creation of local users via the net.exe command.
references:
- https://eqllib.readthedocs.io/en/latest/analytics/014c3f51-89c6-40f1-ac9c-5688f26090ab.html
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.001/T1136.001.md
author: Endgame, JHasenbusch (adapted to Sigma for oscd.community)
date: 2018-10-30
modified: 2023-02-21
tags:
- attack.persistence
- attack.t1136.001
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith:
- '\net.exe'
- '\net1.exe'
- OriginalFileName:
- 'net.exe'
- 'net1.exe'
selection_cli:
CommandLine|contains|all:
- 'user'
- 'add'
condition: all of selection_*
falsepositives:
- Legitimate user creation.
- Better use event IDs for user creation rather than command line rules.
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- Image|endswith:
- '\net.exe'
- '\net1.exe'
- OriginalFileName:
- 'net.exe'
- 'net1.exe'
Stage 2: selection_cli
selection_cli:
CommandLine|contains|all:
- 'user'
- 'add'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|
OriginalFileName | eq |
|