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tccontre
79 lines
3.2 KiB
YAML
79 lines
3.2 KiB
YAML
name: Windows Disable Notification Center
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id: 1cd983c8-8fd6-11ec-a09d-acde48001122
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version: 1
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date: '2022-02-17'
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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: The following search identifies a modification of registry to disable
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the windows notification center feature in a windows host machine. This registry modification removes
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notification and action center from the notification area on the task bar.
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This modification are seen in RAT malware to cover their tracks upon
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downloading other of its component or other payload.
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search: '| tstats `security_content_summariesonly` count from datamodel=Endpoint.Registry
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where Registry.registry_value_name= "DisableNotificationCenter"
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Registry.registry_value_data = "0x00000001" by _time span=1h Registry.dest Registry.user
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Registry.registry_path Registry.registry_value_name Registry.registry_key_name Registry.process_guid
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Registry.registry_value_data | `drop_dm_object_name(Registry)` |rename process_guid
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as proc_guid |join proc_guid, _time [| tstats `security_content_summariesonly` count
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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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registry_key_name] | table _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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registry_key_name | `windows_disable_notification_center_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 process responsible for the changes from
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your endpoints into the `Endpoint` datamodel in the `Registry` node. Also make sure
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that this registry was included in your config files ex. sysmon config to be monitored.
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known_false_positives: admin or user may choose to disable this windows features.
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references:
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- https://tccontre.blogspot.com/2020/01/remcos-rat-evading-windows-defender-av.html
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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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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1112/disable_notif_center/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.user
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- Registry.dest
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- Registry.registry_value_nam
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security_domain: endpoint
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impact: 60
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confidence: 80
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# (impact * confidence)/100
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risk_score: 48
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context:
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- Source:Endpoint
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- Stage:Defense Evasion
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message: The Windows notification center was disabled on $dest$ by $user$.
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observable:
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- name: user
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type: User
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role:
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- Victim
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- name: dest
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type: Hostname
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role:
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- Victim
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nist:
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- PR.PT
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- DE.CM
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cis20:
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- CIS 8
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asset_type: Endpoint |