Jonhnathan
43 lines
1.2 KiB
YAML
43 lines
1.2 KiB
YAML
title: Suspicious Scripting in a WMI Consumer
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id: fe21810c-2a8c-478f-8dd3-5a287fb2a0e0
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status: experimental
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description: Detects suspicious scripting in WMI Event Consumers
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author: Florian Roth, Jonhnathan Ribeiro
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references:
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- https://in.security/an-intro-into-abusing-and-identifying-wmi-event-subscriptions-for-persistence/
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- https://github.com/Neo23x0/signature-base/blob/master/yara/gen_susp_lnk_files.yar#L19
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date: 2019/04/15
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tags:
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- attack.t1086 # an old one
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- attack.execution
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- attack.t1059.005
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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: 20
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selection_destination:
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- Destination|contains|all:
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- 'new-object'
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- 'net.webclient'
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- '.downloadstring'
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- Destination|contains|all:
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- 'new-object'
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- 'net.webclient'
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- '.downloadfile'
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- Destination|contains:
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- ' iex('
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- 'WScript.shell'
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- ' -nop '
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- ' -noprofile '
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- ' -decode '
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- ' -enc '
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condition: selection and selection_destination
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fields:
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- CommandLine
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- ParentCommandLine
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falsepositives:
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- Administrative scripts
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level: high
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