def rule(event):
    if all(
        [
            event.deep_get("ParentImage", default="").endswith("\\prunsrv.exe"),
            any(
                [
                    event.deep_get("Image", default="").endswith("\\powershell.exe"),
                    all(
                        [
                            event.deep_get("Image", default="").endswith("\\cmd.exe"),
                            "/c powershell" in event.deep_get("CommandLine", default=""),
                        ]
                    ),
                ]
            ),
        ]
    ):
        return True
    return False
