mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Bhavin Patel
72 lines
3.0 KiB
YAML
72 lines
3.0 KiB
YAML
name: Disable Registry Tool
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id: cd2cf33c-9201-11eb-a10a-acde48001122
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version: 6
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date: '2024-05-14'
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author: Steven Dick, Teoderick Contreras, Splunk
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status: production
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type: TTP
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description: The following analytic detects modifications to the Windows registry
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aimed at disabling the Registry Editor (regedit). It leverages data from the Endpoint.Registry
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data model, specifically monitoring changes to the registry path
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"*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\DisableRegistryTools"
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with a value of "0x00000001". This activity is significant because malware, such
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as RATs or trojans, often disable registry tools to prevent the removal of their
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entries, aiding in persistence and defense evasion. If confirmed malicious, this
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could hinder incident response efforts and allow the attacker to maintain control
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over the compromised system.
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data_source:
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- Sysmon EventID 12
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- Sysmon EventID 13
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search: '| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry
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WHERE (Registry.registry_path= "*\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\DisableRegistryTools"
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Registry.registry_value_data = "0x00000001") BY _time span=1h Registry.user Registry.dest
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Registry.registry_path Registry.registry_key_name Registry.registry_value_name Registry.registry_value_data
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Registry.process_guid | `drop_dm_object_name(Registry)`| where isnotnull(registry_value_data)
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `disable_registry_tool_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the registry value name, registry path, and registry value data from your
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endpoints. If you are using Sysmon, you must have at least version 2.0 of the offical
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Sysmon TA. https://splunkbase.splunk.com/app/5709
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known_false_positives: admin may disable this application for non technical user.
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references:
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- https://any.run/report/ea4ea08407d4ee72e009103a3b77e5a09412b722fdef67315ea63f22011152af/a866d7b1-c236-4f26-a391-5ae32213dfc4#registry
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tags:
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analytic_story:
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- Windows Defense Evasion Tactics
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- Windows Registry Abuse
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- NjRAT
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asset_type: Endpoint
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confidence: 100
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impact: 40
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message: Disabled Registry Tools on $dest$
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mitre_attack_id:
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- T1562.001
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- T1562
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- T1112
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observable:
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- name: dest
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type: Endpoint
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Registry.dest
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- Registry.registry_value_name
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- Registry.registry_key_name
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- Registry.registry_path
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- Registry.registry_value_data
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- Registry.process_guid
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risk_score: 40
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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