Elastic high stable eql

Potential EtherHiding C2 via Curl JSON-RPC Request

Detects when curl or nscurl is spawned by a shell or osascript to make a JSON-RPC request to a blockchain endpoint for command and control purposes. Adversaries may leverage blockchain smart contracts as a covert C2 channel to retrieve commands or payload staging information, as observed in ClickFix campaigns.

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Detection Logic

process where host.os.type == "macos" and event.type == "start" and event.action == "exec" and
  process.name in ("curl", "nscurl") and
  process.parent.name in ("osascript", "bash", "sh", "zsh") and
  process.command_line like~ ("*eth_call*", "*\"jsonrpc\"*")

Field Validations

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