mirror of
https://github.com/splunk/security_content
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Bhavin Patel
62 lines
2.6 KiB
YAML
62 lines
2.6 KiB
YAML
name: PowerShell Enable PowerShell Remoting
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id: 40e3b299-19a5-4460-96e9-e1467f714f8e
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version: 2
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date: '2024-05-17'
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author: Michael Haag, Splunk
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type: Anomaly
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status: production
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data_source:
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- Powershell Script Block Logging 4104
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description: The following analytic detects the use of the Enable-PSRemoting cmdlet,
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which allows PowerShell remoting on a local or remote computer. This detection leverages
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PowerShell Script Block Logging (EventCode 4104) to identify when this cmdlet is
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executed. Monitoring this activity is crucial as it can indicate an attacker enabling
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remote command execution capabilities on a compromised system. If confirmed malicious,
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this activity could allow an attacker to take control of the system remotely, execute
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commands, and potentially pivot to other systems within the network, leading to
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further compromise and lateral movement.
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search: '`powershell` EventCode=4104 ScriptBlockText="*Enable-PSRemoting*" | stats
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count min(_time) as firstTime max(_time) as lastTime by Computer EventCode ScriptBlockText
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`| `powershell_enable_powershell_remoting_filter`'
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how_to_implement: To successfully implement this analytic, you will need to enable
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PowerShell Script Block Logging on some or all endpoints. Additional setup here
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https://docs.splunk.com/Documentation/UBA/5.0.4.1/GetDataIn/AddPowerShell#Configure_module_logging_for_PowerShell.
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known_false_positives: Note that false positives may occur due to the use of the Enable-PSRemoting
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cmdlet by legitimate users, such as system administrators. It is recommended to
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apply appropriate filters as needed to minimize the number of false positives.
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references:
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- https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/enable-psremoting?view=powershell-7.3
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tags:
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analytic_story:
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- Malicious PowerShell
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asset_type: Endpoint
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confidence: 50
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impact: 50
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message: PowerShell was identified running a Invoke-PSremoting on $Computer$.
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mitre_attack_id:
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- T1059.001
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- T1059
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observable:
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- name: Computer
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type: Hostname
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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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- EventCode
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- ScriptBlockText
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- Computer
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risk_score: 25
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1059.001/atomic_red_team/4104-psremoting-windows-powershell.log
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source: XmlWinEventLog:Microsoft-Windows-PowerShell/Operational
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sourcetype: xmlwineventlog
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