- Engineer — Learn: The blockchain-based C2 technique — resolving replacement C2 addresses from an Ethereum smart contract — is a novel evasion that standard domain-block controls won’t catch; worth reviewing egress filtering to include RPC/blockchain API endpoints.
- SOC/IR — Plan: Add detection coverage for unexpected Ethereum RPC calls or blockchain API queries originating from endpoints, as this C2 pattern bypasses conventional domain-blocking; no specific IOCs were released, so broader TTP-level hunting is the near-term action.
- Leader — Skip