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47 lines
1.2 KiB
YAML
47 lines
1.2 KiB
YAML
title: PowerShell Network Connections
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id: 1f21ec3f-810d-4b0e-8045-322202e22b4b
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status: experimental
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description: Detects a Powershell process that opens network connections - check for suspicious target ports and target systems - adjust to your environment (e.g.
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extend filters with company's ip range')
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author: Florian Roth
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references:
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- https://www.youtube.com/watch?v=DLtJTxMWZ2o
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tags:
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- attack.execution
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- attack.t1086
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logsource:
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product: windows
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service: sysmon
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detection:
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selection:
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EventID: 3
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Image: '*\powershell.exe'
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Initiated: 'true'
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filter:
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DestinationIp:
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- '10.*'
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- '192.168.*'
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- '172.16.*'
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- '172.17.*'
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- '172.18.*'
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- '172.19.*'
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- '172.20.*'
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- '172.21.*'
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- '172.22.*'
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- '172.23.*'
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- '172.24.*'
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- '172.25.*'
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- '172.26.*'
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- '172.27.*'
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- '172.28.*'
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- '172.29.*'
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- '172.30.*'
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- '172.31.*'
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- '127.0.0.1'
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DestinationIsIpv6: 'false'
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User: 'NT AUTHORITY\SYSTEM'
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condition: selection and not filter
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falsepositives:
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- Administrative scripts
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level: low
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