Detection rules › Sigma
Potential Windows Defender Tampering Via Wmic.EXE
Detects potential tampering with Windows Defender settings such as adding exclusion using wmic
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Defense Impairment |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Potential Windows Defender Tampering Via Wmic.EXE
id: 51cbac1e-eee3-4a90-b1b7-358efb81fa0a
status: test
description: Detects potential tampering with Windows Defender settings such as adding exclusion using wmic
references:
- https://github.com/redcanaryco/atomic-red-team/blob/5c1e6f1b4fafd01c8d1ece85f510160fc1275fbf/atomics/T1562.001/T1562.001.md
- https://www.bleepingcomputer.com/news/security/gootkit-malware-bypasses-windows-defender-by-setting-path-exclusions/
- https://www.bleepingcomputer.com/news/security/iobit-forums-hacked-to-spread-ransomware-to-its-members/
author: frack113
date: 2022-12-11
modified: 2023-02-14
tags:
- attack.execution
- attack.defense-impairment
- attack.t1047
- attack.t1685
logsource:
product: windows
category: process_creation
detection:
selection_img:
- OriginalFileName: 'wmic.exe'
- Image|endswith: '\WMIC.exe'
selection_cli:
CommandLine|contains: '/Namespace:\\\\root\\Microsoft\\Windows\\Defender'
condition: all of selection_*
falsepositives:
- Unknown
level: high
simulation:
- type: atomic-red-team
name: WMIC Tamper with Windows Defender Evade Scanning Folder
technique: T1562.001
atomic_guid: 59d386fc-3a4b-41b8-850d-9e3eee24dfe4
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_namespace_defender/info.yml
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- OriginalFileName: 'wmic.exe'
- Image|endswith: '\WMIC.exe'
Stage 2: selection_cli
selection_cli:
CommandLine|contains: '/Namespace:\\\\root\\Microsoft\\Windows\\Defender'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:"/Namespace:\\\\root\\Microsoft\\Windows\\Defender" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\WMIC.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"wmic.exe" |