alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS User-Agent (STEROID Download)"; flow:established,to_server; http.user_agent; content:"STEROID Download"; nocase; depth:16; endswith; reference:url,anubis.iseclab.org/?action=result&task_id=17b118a86edba30f4f588db66eaf55d10; reference:url,security.thejoshmeister.com/2009/09/new-malware-ddos-botexe-etc-and.html; classtype:trojan-activity; sid:2009994; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Major, updated_at 2020_10_17;)