alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/BaneChant.APT Initial CnC Beacon"; flow:established,to_server; http.uri; content:"/adserv/logo.jpg"; fast_pattern; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.0|3b 20|Windows NT 5.1|3b 20|SV2)"; bsize:55; reference:url,www.fireeye.com/blog/technical/malware-research/2013/04/trojan-apt-banechant-in-memory-trojan-that-observes-for-multiple-mouse-clicks.html; classtype:targeted-activity; sid:2016728; rev:4; metadata:attack_target Client_Endpoint, created_at 2013_04_05, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_18, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)