alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS WaterDropX PRISM UA Observed"; flow:established,to_server; http.user_agent; content:"agent-waterdropx"; fast_pattern; classtype:command-and-control; sid:2033269; rev:1; metadata:created_at 2021_07_07, malware_family PRISM, confidence High, signature_severity Major, tag WaterDropX, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_07;)