32 lines
783 B
YAML
32 lines
783 B
YAML
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title: Exchange Set OabVirtualDirectory ExternalUrl Property
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author: Jose Rodriguez @Cyb3rPandaH
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date: 2021/03/15
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description: Rule to detect an adversary setting OabVirtualDirectory External URL
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property to a script in Exchange Management log
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detection:
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SELECTION_1:
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- Set-OabVirtualDirectory
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SELECTION_2:
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- ExternalUrl
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SELECTION_3:
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- Page_Load
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SELECTION_4:
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- script
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4)
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falsepositives:
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- Unknown
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id: 9db37458-4df2-46a5-95ab-307e7f29e675
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level: high
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logsource:
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product: windows
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service: msexchange-management
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modified: 2021/11/15
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references:
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- https://twitter.com/OTR_Community/status/1371053369071132675
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status: experimental
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tags:
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- attack.persistence
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- attack.t1505.003
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ruletype: SIGMA
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