alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Possible QBot User-Agent"; flow:established,to_server; http.user_agent; bsize:14; content:"MelindaMelinda"; reference:md5,d5129d51bf982b055ee00fe7ef4da3c0; classtype:trojan-activity; sid:2030149; rev:1; metadata:created_at 2020_05_11, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_11;)