alert tcp-pkt any any -> $HOME_NET any (
msg:"ET INFO Apache Spark RPC - CheckExistence Request (set)";
flow:established,to_server;
flowbits:set,ET.ApacheSpark_CE;
flowbits:isnotset,ET.ApacheSpark_CE;
flowbits:noalert;
content:"endpoint-verifier"; fast_pattern;
content:"CheckExistence"; distance:0;
classtype:not-suspicious;
sid:2035001; rev:2;
metadata:attack_target Server, created_at 2022_01_28, deployment Internal, deployment Datacenter, confidence High, signature_severity Informational, updated_at 2022_01_28;
)