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https://github.com/splunk/security_content
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pyth0n1c
64 lines
2.5 KiB
YAML
64 lines
2.5 KiB
YAML
name: Disable Windows App Hotkeys
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id: 1490f224-ad8b-11eb-8c4f-acde48001122
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version: 1
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date: '2021-05-05'
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author: Teoderick Contreras, Splunk
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type: TTP
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datamodel:
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- Endpoint
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description: This analytic detects a suspicious registry modification to disable Windows
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hotkey (shortcut keys) for native Windows applications. This technique is commonly
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used to disable certain or several Windows applications like `taskmgr.exe` and `cmd.exe`.
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This technique is used to impair the analyst in analyzing and removing the attacker
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implant in compromised systems.
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search: '| tstats `security_content_summariesonly` count values(Registry.registry_key_name)
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as registry_key_name values(Registry.registry_path) as registry_path min(_time)
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as firstTime max(_time) as lastTime FROM datamodel=Endpoint.Registry where Registry.registry_path="*\\Windows
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NT\\CurrentVersion\\Image File Execution Options\\*" AND Registry.registry_value_name
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= "HotKey Disabled" AND Registry.registry_key_name = "Debugger" by Registry.dest
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Registry.user Registry.registry_value_name | `security_content_ctime(lastTime)`
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| `security_content_ctime(firstTime)` | `drop_dm_object_name(Registry)` | `disable_windows_app_hotkeys_filter`'
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how_to_implement: To successfully implement this search, you must be ingesting data
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that records registry activity from your hosts to populate the endpoint data model
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in the registry node. This is typically populated via endpoint detection-and-response
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product, such as CarbonBlack or endpoint data sources, such as Sysmon. The data
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used for this search is typically generated via logs that report reads and writes
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to the registry.
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known_false_positives: unknown
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references:
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- https://thedfirreport.com/2020/04/20/sqlserver-or-the-miner-in-the-basement/
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tags:
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analytic_story:
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- XMRig
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automated_detection_testing: passed
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confidence: 100
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/hotkey_disabled_hidden_user/windows-sysmon.log
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impact: 40
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kill_chain_phases:
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- Exploitation
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message: Disabled 'Windows App Hotkeys' on $dest$
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mitre_attack_id:
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- T1562.001
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- T1562
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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.registry_key_name
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- Registry.registry_path
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- Registry.registry_value_name
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- Registry.dest Registry.user
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risk_score: 40
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security_domain: endpoint
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