Detects powershell process used to find and shut down local Hyper-V VMs using the Stop-VM cmdlet, as documented in the 2024 Morphisec report on Cicada3301 ransomware.

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This detection uses azureactivity logs (Administrative category) to identify the creation or update of a server instance in an Azure AD Hybrid health AD FS service. A threat actor can create a new AD Health ADFS service and create a fake server instance to spoof AD FS signing logs. There is no need to compromise an on-prem AD FS server. This can be done programmatically via HTTP requests to Azure.

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