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tccontre
72 lines
2.5 KiB
YAML
72 lines
2.5 KiB
YAML
name: Schtasks Run Task On Demand
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id: bb37061e-af1f-11eb-a159-acde48001122
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version: 1
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date: '2021-05-07'
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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 analytic identifies an on demand run of a Windows Schedule Task
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through shell or command-line. This technique has been used by adversaries that
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force to run their created Schedule Task as their persistence mechanism or for lateral
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movement as part of their malicious attack to the compromised machine.
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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 = "schtasks.exe"
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Processes.process = "*/run*" by Processes.process_name Processes.parent_process_name
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Processes.dest Processes.user | `drop_dm_object_name(Processes)` | `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)` | `schtasks_run_task_on_demand_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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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA. Tune and filter known instances where renamed schtasks.exe may be used.
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known_false_positives: Administrators may use to debug Schedule Task entries. Filter
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as needed.
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references:
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- https://thedfirreport.com/2020/04/20/sqlserver-or-the-miner-in-the-basement/
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tags:
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analytic_story:
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- XMRig
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- Industroyer2
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- CISA AA22-257A
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- Qakbot
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confidence: 80
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context:
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- Source:Endpoint
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- Stage:Execution
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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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impact: 60
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kill_chain_phases:
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- Exploitation
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message: A "on demand" execution of schedule task process $process_name$ using
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commandline $process$ in host $dest$
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mitre_attack_id:
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- T1053
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observable:
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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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- name: user
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type: User
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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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- Processes.process
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- Processes.process_id
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- Processes.process_name
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- Processes.parent_process_name
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- Processes.dest
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- Processes.user
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risk_score: 48
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security_domain: endpoint
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supported_tas:
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- Splunk_TA_microsoft_sysmon
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asset_type: Endpoint
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