mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
root
80 lines
3.9 KiB
YAML
80 lines
3.9 KiB
YAML
name: Disable Windows Behavior Monitoring
|
|
id: 79439cae-9200-11eb-a4d3-acde48001122
|
|
version: 2
|
|
date: '2022-01-27'
|
|
author: Teoderick Contreras, Splunk
|
|
type: TTP
|
|
datamodel:
|
|
- Endpoint
|
|
description: This search is to identifies a modification in registry to disable the
|
|
windows denfender real time behavior monitoring. This event or technique is commonly
|
|
seen in RAT, bot, or Trojan to disable AV to evade detections.
|
|
search: '| tstats `security_content_summariesonly` count from datamodel=Endpoint.Registry
|
|
where Registry.registry_path= "*\\SOFTWARE\\Policies\\Microsoft\\Windows Defender\\Real-Time
|
|
Protection\\DisableBehaviorMonitoring" OR Registry.registry_path= "*\\SOFTWARE\\Policies\\Microsoft\\Windows
|
|
Defender\\Real-Time Protection\\DisableOnAccessProtection" OR Registry.registry_path=
|
|
"*\\SOFTWARE\\Policies\\Microsoft\\Windows Defender\\Real-Time Protection\\DisableScanOnRealtimeEnable"
|
|
OR Registry.registry_path= "*\\SOFTWARE\\Microsoft\\Windows Defender\\Real-Time
|
|
Protection\\DisableRealtimeMonitoring" OR Registry.registry_path= "*\\Real-Time
|
|
Protection\\DisableIntrusionPreventionSystem" OR Registry.registry_path= "*\\Real-Time
|
|
Protection\\DisableIOAVProtection" OR Registry.registry_path= "*\\Real-Time Protection\\DisableScriptScanning"
|
|
AND Registry.registry_value_data = "0x00000001" by _time span=1h Registry.dest Registry.user
|
|
Registry.registry_path Registry.registry_value_name Registry.registry_value_data
|
|
Registry.process_guid | `drop_dm_object_name(Registry)` |rename process_guid as
|
|
proc_guid |join proc_guid, _time [| tstats `security_content_summariesonly` count
|
|
FROM datamodel=Endpoint.Processes by _time span=1h Processes.process_id Processes.process_name
|
|
Processes.process Processes.dest Processes.parent_process_name Processes.parent_process
|
|
Processes.process_guid | `drop_dm_object_name(Processes)` |rename process_guid as
|
|
proc_guid | fields _time dest user parent_process_name parent_process process_name
|
|
process_path process proc_guid registry_path registry_value_name registry_value_data]
|
|
| table _time dest user parent_process_name parent_process process_name process_path
|
|
process proc_guid registry_path registry_value_name registry_value_data | `disable_windows_behavior_monitoring_filter`'
|
|
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 `Registry` node. Also make sure
|
|
that this registry was included in your config files ex. sysmon config to be monitored.
|
|
known_false_positives: admin or user may choose to disable this windows features.
|
|
references:
|
|
- https://tccontre.blogspot.com/2020/01/remcos-rat-evading-windows-defender-av.html
|
|
tags:
|
|
analytic_story:
|
|
- Windows Defense Evasion Tactics
|
|
- Ransomware
|
|
- Revil Ransomware
|
|
- Windows Registry Abuse
|
|
- Azorult
|
|
confidence: 100
|
|
context:
|
|
- Source:Endpoint
|
|
- Stage:Defense Evasion
|
|
dataset:
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-security.log
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log
|
|
- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log
|
|
impact: 40
|
|
kill_chain_phases:
|
|
- Exploitation
|
|
message: Windows Defender real time behavior monitoring disabled on $dest
|
|
mitre_attack_id:
|
|
- T1562.001
|
|
- T1562
|
|
observable:
|
|
- name: dest
|
|
type: Endpoint
|
|
role:
|
|
- Victim
|
|
product:
|
|
- Splunk Enterprise
|
|
- Splunk Enterprise Security
|
|
- Splunk Cloud
|
|
required_fields:
|
|
- _time
|
|
- Registry.registry_key_name
|
|
- Registry.registry_path
|
|
- Registry.user
|
|
- Registry.dest
|
|
- Registry.registry_value_name
|
|
risk_score: 40
|
|
security_domain: endpoint
|
|
asset_type: Endpoint
|