Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
43 lines
1.4 KiB
YAML
43 lines
1.4 KiB
YAML
title: Suspicious Scripting in a WMI Consumer
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id: fe21810c-2a8c-478f-8dd3-5a287fb2a0e0
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status: test
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description: Detects suspicious commands that are related to scripting/powershell in WMI Event Consumers
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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/615bf1f6bac3c1bdc417025c40c073e6c2771a76/yara/gen_susp_lnk_files.yar#L19
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- https://github.com/RiccardoAncarani/LiquidSnake
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author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro
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date: 2019-04-15
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modified: 2023-09-09
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tags:
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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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category: wmi_event
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detection:
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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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- ' -nop '
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- ' -noprofile '
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- ' -decode '
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- ' -enc '
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- 'WScript.Shell'
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- 'System.Security.Cryptography.FromBase64Transform'
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condition: selection_destination
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fields:
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- User
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- Operation
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falsepositives:
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- Legitimate administrative scripts
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level: high
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