alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Avzhan DDoS Bot User-Agent MyIE"; flow:established,to_server; http.user_agent; content:"Mozilla"; startswith; content:"|3b 20|MyIE|20|"; fast_pattern; within:100; reference:url,asert.arbornetworks.com/2010/09/another-family-of-ddos-bots-avzhan/; reference:url,blog.fireeye.com/research/2010/10/avzhan-botnet-the-story-of-evolution.html; classtype:trojan-activity; sid:2013258; rev:8; metadata:created_at 2011_03_01, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_22;)