Incoming Execution via WinRM Remote Shell

sequence by host.id with maxspan=30s
   [network where host.os.type == "windows" and process.pid == 4 and network.direction : ("incoming", "ingress") and
    destination.port in (5985, 5986) and source.ip != "127.0.0.1" and source.ip != "::1"]
   [process where host.os.type == "windows" and
    event.type == "start" and process.parent.name : "winrshost.exe" and not process.executable : "?:\\Windows\\System32\\conhost.exe"]

False Positives

• ⚠ WinRM is a dual-use protocol that can be used for benign or malicious activity. It's important to baseline your environment to determine the amount of noise to expect from this tool.