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Update wsreset_uac_bypass.yml

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This commit is contained in:
Bhavin Patel
2023-02-02 17:38:55 -08:00
committed by GitHub
parent 60f4507a52
commit 33fe8597eb
1 changed files with 11 additions and 11 deletions
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detections/endpoint/wsreset_uac_bypass.yml
+11 -11
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@@ -10,16 +10,16 @@ description: This search is to detect a suspicious modification of registry rela
to UAC bypass. This technique is to modify the registry in this detection, create
a registry value with the path of the payload and run WSreset.exe to bypass User
account Control.
search: '| tstats `security_content_summariesonly` count min(_time) AS firstTime max(_time) AS lastTime FROM datamodel=Endpoint.Processes BY _time span=1h Processes.user Processes.process_id Processes.process_name Processes.process Processes.process_path Processes.dest Processes.parent_process_name Processes.parent_process Processes.process_guid
| `drop_dm_object_name(Processes)`
| join process_guid [
| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry WHERE (Registry.registry_path= "*\\AppX82a6gwre4fdg3bt635tn5ctqjf8msdd2\\Shell\\open\\command*" AND (Registry.registry_value_name = "(Default)" OR Registry.registry_value_name = "DelegateExecute") by _time span=1h Registry.dest Registry.user Registry.registry_path) BY _time span=1h Registry.registry_path Registry.registry_key_name Registry.registry_value_name Registry.registry_value_data Registry.process_guid
| `drop_dm_object_name(Registry)`]
| fields firstTime lastTime dest user parent_process_name parent_process process_name process_path process registry_key_name registry_path registry_value_name registry_value_data process_guid
| where isnotnull(registry_value_data)
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `wsreset_uac_bypass_filter`'
search: '| tstats `security_content_summariesonly` count min(_time) AS firstTime max(_time) AS lastTime FROM datamodel=Endpoint.Processes BY _time span=1h Processes.user Processes.process_id Processes.process_name Processes.process Processes.process_path Processes.dest Processes.parent_process_name Processes.parent_process Processes.process_guid
| `drop_dm_object_name(Processes)`
| join process_guid
[| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Registry WHERE Registry.registry_path= "*\\AppX82a6gwre4fdg3bt635tn5ctqjf8msdd2\\Shell\\open\\command*" AND (Registry.registry_value_name = "(Default)" OR Registry.registry_value_name = "DelegateExecute") by _time span=1h Registry.dest Registry.user Registry.registry_path Registry.registry_key_name Registry.registry_value_name Registry.registry_value_data Registry.process_guid
| `drop_dm_object_name(Registry)`]
| fields firstTime lastTime dest user parent_process_name parent_process process_name process_path process registry_key_name registry_path registry_value_name registry_value_data process_guid
| where isnotnull(registry_value_data)
| `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`
| `wsreset_uac_bypass_filter` '
how_to_implement: To successfully implement this search, you need to be ingesting
logs with the registry value name, registry path, and registry value data from your
endpoints. If you are using Sysmon, you must have at least version 2.0 of the offical
@@ -80,4 +80,4 @@ tags:
security_domain: endpoint
supported_tas:
- Splunk_TA_microsoft_sysmon
asset_type: Endpoint
asset_type: Endpoint