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56 lines
2.6 KiB
YAML
56 lines
2.6 KiB
YAML
name: Suspicious Process File Path
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id: 9be25988-ad82-11eb-a14f-acde48001122
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version: 1
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date: '2021-05-05'
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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: The following analytic will detect a suspicious process running in a
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file path where a process is not commonly seen and is most commonly used by malicious
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softtware. This behavior has been used by adversaries where they drop and run an
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exe in a path that is accessible without admin privileges.
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search: '| tstats `security_content_summariesonly` count values(Processes.process_name)
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as process_name values(Processes.process) as process min(_time) as firstTime max(_time)
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as lastTime from datamodel=Endpoint.Processes where Processes.process_path = "*\\windows\\fonts\\*"
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OR Processes.process_path = "*\\windows\\temp\\*" OR Processes.process_path = "*\\users\\public\\*"
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OR Processes.process_path = "*\\windows\\debug\\*" OR Processes.process_path.file_path
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= "*\\Users\\Administrator\\Music\\*" OR Processes.process_path.file_path = "*\\Windows\\servicing\\*"
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OR Processes.process_path.file_path = "*\\Users\\Default\\*" OR Processes.process_path.file_path
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= "*Recycle.bin*" OR Processes.process_path = "*\\Windows\\Media\\*" OR Processes.process_path
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= "\\Windows\\repair\\*" OR Processes.process_path = "*\\temp\\*" by Processes.parent_process_name
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Processes.parent_process Processes.process_path Processes.dest Processes.user |
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`drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`
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| `suspicious_process_file_path_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 `Processes` node.
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known_false_positives: Administrators may allow execution of specific binaries in
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non-standard paths. Filter as needed.
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references:
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- https://www.trendmicro.com/vinfo/hk/threat-encyclopedia/malware/trojan.ps1.powtran.a/
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tags:
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analytic_story:
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- XMRig
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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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kill_chain_phases:
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- Exploitation
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mitre_attack_id:
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- T1543
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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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- Processes.process_name
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- Processes.process
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.process_path
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- Processes.dest
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- Processes.user
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security_domain: endpoint
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