Detection rules › Sigma
Windows Share Mount Via Net.EXE
Detects when a share is mounted using the "net.exe" utility
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Lateral Movement | T1021.002 Remote Services: SMB/Windows Admin Shares |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
Rule body yaml
title: Windows Share Mount Via Net.EXE
id: f117933c-980c-4f78-b384-e3d838111165
related:
- id: 3abd6094-7027-475f-9630-8ab9be7b9725
type: similar
status: test
description: Detects when a share is mounted using the "net.exe" utility
references:
- https://drive.google.com/file/d/1lKya3_mLnR3UQuCoiYruO3qgu052_iS_/view
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-02-02
modified: 2023-02-21
tags:
- attack.lateral-movement
- attack.t1021.002
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith:
- '\net.exe'
- '\net1.exe'
- OriginalFileName:
- 'net.exe'
- 'net1.exe'
selection_cli:
CommandLine|contains:
- ' use '
- ' \\\\'
condition: all of selection_*
falsepositives:
- Legitimate activity by administrators and scripts
level: low
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:
- ' use '
- ' \\\\'
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 |
|