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Added detection testing service results inModify ACL permission To Files Or Folder
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@@ -6,16 +6,18 @@ 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 detect a suspicious modification of ACL permission to a files or folder to make it available to everyone.
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This technique may use by adversarie to evade ACLs or protected files access. This changes is commonly configured by the file or directory owner
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with appropriate permission. So this is a good indicator if this command seen in machine with no permission to do so.
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search: '| tstats `security_content_summariesonly` values(Processes.process) as process values(Processes.process_id) as process_id count min(_time) as firstTime max(_time) as lastTime
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from datamodel=Endpoint.Processes where Processes.process_name = "cacls.exe" OR Processes.process_name = "icacls.exe" OR Processes.process_name = "xcacls.exe"
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description: This search is to detect a suspicious modification of ACL permission
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to a files or folder to make it available to everyone. This technique may use by
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adversarie to evade ACLs or protected files access. This changes is commonly configured
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by the file or directory owner with appropriate permission. So this is a good indicator
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if this command seen in machine with no permission to do so.
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search: '| tstats `security_content_summariesonly` values(Processes.process) as process
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values(Processes.process_id) as process_id count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where Processes.process_name = "cacls.exe"
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OR Processes.process_name = "icacls.exe" OR Processes.process_name = "xcacls.exe"
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AND (Processes.process = "*/G everyone:*" OR Processes.process = "*/G SYSTEM:*")
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by Processes.parent_process_name Processes.process_name Processes.dest Processes.user
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| `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`
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| `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
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| `modify_acl_permission_to_files_or_folder_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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@@ -43,4 +45,7 @@ tags:
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- Processes.user
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- Processes.process
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- Processes.process_id
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security_domain: endpoint
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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/malware/xmrig_miner/windows-sysmon.log
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