mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
P4T12ICK
73 lines
2.5 KiB
YAML
73 lines
2.5 KiB
YAML
name: Disabling Firewall with Netsh
|
|
id: 6860a62c-9203-11eb-9e05-acde48001122
|
|
version: 2
|
|
date: '2021-03-31'
|
|
author: Teoderick Contreras, Splunk
|
|
status: production
|
|
type: Anomaly
|
|
description: This search is to identifies suspicious firewall disabling using netsh
|
|
application. this technique is commonly seen in malware that tries to communicate
|
|
or download its component or other payload to its C2 server.
|
|
data_source:
|
|
- Sysmon Event ID 1
|
|
search:
|
|
selection1:
|
|
OriginalFileName: netsh.exe
|
|
selection2:
|
|
Image|endswith: netsh.exe
|
|
selection3:
|
|
CommandLine: '*firewall*'
|
|
selection4:
|
|
CommandLine:
|
|
- '*off*'
|
|
- '*disable*'
|
|
condition: (selection1 or selection2) and selection3 and selection4
|
|
how_to_implement: To successfully implement this search you need to be ingesting information
|
|
on process that include the name of the process responsible for the changes from
|
|
your endpoints into the `Endpoint` datamodel in the `Processes` node. In addition,
|
|
confirm the latest CIM App 4.20 or higher is installed and the latest TA for the
|
|
endpoint product.
|
|
known_false_positives: admin may disable firewall during testing or fixing network
|
|
problem.
|
|
references:
|
|
- https://tccontre.blogspot.com/2020/01/remcos-rat-evading-windows-defender-av.html
|
|
tags:
|
|
analytic_story:
|
|
- Windows Defense Evasion Tactics
|
|
asset_type: Endpoint
|
|
confidence: 50
|
|
impact: 50
|
|
message: The Windows Firewall was disabled on $dest$ by $user$.
|
|
mitre_attack_id:
|
|
- T1562.001
|
|
- T1562
|
|
observable:
|
|
- name: user
|
|
type: User
|
|
role:
|
|
- Victim
|
|
- name: dest
|
|
type: Hostname
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
risk_score: 25
|
|
security_domain: endpoint
|
|
tests:
|
|
- name: True Positive Test
|
|
attack_data:
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-security.log
|
|
source: WinEventLog:Security
|
|
sourcetype: WinEventLog
|
|
update_timestamp: true
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log
|
|
source: WinEventLog:System
|
|
sourcetype: WinEventLog
|
|
update_timestamp: true
|
|
- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log
|
|
source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
|
|
sourcetype: xmlwineventlog
|