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49 lines
2.4 KiB
YAML
49 lines
2.4 KiB
YAML
name: Disabling CMD Application
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id: ff86077c-9212-11eb-a1e6-acde48001122
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version: 1
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date: '2021-03-31'
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author: Teoderick Contreras, Splunk
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type: batch
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datamodel:
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- Endpoint
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description: this search is to identify modification in registry to disable cmd prompt
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application. This technique is commonly seen in RAT, Trojan or WORM to prevent triaging
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or deleting there samples through cmd application which is one of the tool of analyst
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to traverse on directory and files.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Registry where Registry.registry_path= "*\\SOFTWARE\\Policies\\Microsoft\\Windows\\System\\DisableCMD"
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Registry.registry_value_name = "DWORD (0x00000001)" by Registry.registry_path Registry.registry_key_name
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Registry.registry_value_name Registry.dest | `drop_dm_object_name(Registry)` | `security_content_ctime(firstTime)`
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|`security_content_ctime(lastTime)` | `disabling_cmd_application_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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tags:
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analytic_story:
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- Windows Defense Evasion Tactics
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kill_chain_phases:
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- Exploitation
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mitre_attack_id:
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- T1562.001
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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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security_domain: endpoint
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automated_detection_testing: passed
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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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