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root
77 lines
3.5 KiB
YAML
77 lines
3.5 KiB
YAML
name: Disabling Task Manager
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id: dac279bc-9202-11eb-b7fb-acde48001122
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version: 2
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date: '2022-01-28'
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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 search is to identifies modification of registry to disable the
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task manager of windows operating system. this event or technique are commonly seen
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in malware such as RAT, Trojan, TrojanSpy or worm to prevent the user to terminate
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their process.
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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\\DisableTaskMgr"
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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 | `disabling_task_manager_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 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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- https://blog.talosintelligence.com/2020/05/threat-roundup-0424-0501.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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confidence: 60
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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/win_app_defender_disabling/windows-security.log
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1562.001/win_app_defender_disabling/windows-system.log
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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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impact: 70
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kill_chain_phases:
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- Exploitation
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message: The Windows Task Manager was disabled on $dest$ by $user$.
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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: 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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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_name
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risk_score: 42
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security_domain: endpoint
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asset_type: Endpoint
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