alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Soraya C2 User-Agent (rhyno321)"; flow:established,to_server; http.user_agent; content:"rhyno321"; startswith; reference:md5,a95dacba360e45fc03769ea55c546a7b; reference:url,www.arbornetworks.com/asert/2014/06/the-best-of-both-worlds-soraya/; classtype:command-and-control; sid:2018523; rev:5; metadata:created_at 2014_06_04, confidence High, signature_severity Major, updated_at 2024_04_12;)