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root
85 lines
3.4 KiB
YAML
85 lines
3.4 KiB
YAML
name: Windows Hide Notification Features Through Registry
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id: cafa4bce-9f06-11ec-a7b2-acde48001122
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version: 1
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date: '2022-03-08'
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author: Teoderick Contreras, Splunk
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type: Anomaly
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datamodel:
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- Endpoint
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description: This analytic is to detect a suspicious registry modification to hide
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common windows notification feature from compromised host. This technique was seen
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in some ransomware family to add more impact to its payload that are visually seen
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by user aside from the encrypted files and ransomware notes. Even this a good anomaly
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detection, administrator may implement this changes for auditing or security reason.
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In this scenario filter is needed.
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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\\Explorer\\*"
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Registry.registry_value_name IN ("HideClock", "HideSCAHealth", "HideSCANetwork",
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"HideSCAPower", "HideSCAVolume") Registry.registry_value_data = "0x00000001" by
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_time span=1h Registry.dest Registry.user Registry.registry_path Registry.registry_value_name
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Registry.registry_value_data Registry.process_guid | `drop_dm_object_name(Registry)`
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|rename process_guid as proc_guid |join proc_guid, _time [| tstats `security_content_summariesonly`
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count FROM datamodel=Endpoint.Processes by _time span=1h Processes.process_id Processes.process_name
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Processes.process Processes.dest Processes.parent_process_name Processes.parent_process
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Processes.process_guid | `drop_dm_object_name(Processes)` |rename process_guid as
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proc_guid | fields _time dest user parent_process_name parent_process process_name
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process_path process proc_guid registry_path registry_value_name registry_value_data]
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| table _time dest user parent_process_name parent_process process_name process_path
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process proc_guid registry_path registry_value_name registry_value_data | `windows_hide_notification_features_through_registry_filter`'
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how_to_implement: To successfully implement this search you need to be ingesting information
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on process that include the name of the Filesystem responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Processes` and `Registry` node.
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known_false_positives: unknown
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references:
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- https://www.trendmicro.com/vinfo/us/threat-encyclopedia/malware/Ransom.Win32.ONALOCKER.A/
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tags:
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analytic_story:
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- Ransomware
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- Windows Defense Evasion Tactics
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- Windows Registry Abuse
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1112/ransomware_disable_reg/sysmon.log
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kill_chain_phases:
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- Exploitation
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mitre_attack_id:
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- T1112
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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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- Processes.process_id
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- Processes.process_name
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- Processes.process
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- Processes.dest
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.process_guid
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security_domain: endpoint
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impact: 70
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confidence: 70
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risk_score: 49
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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message: Registry modification to hide windows notification on $dest$
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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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nist:
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- DE.CM
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cis20:
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- CIS 3
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- CIS 5
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- CIS 16
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asset_type: Endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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