alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Linux/Lady CnC Beacon 2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/v"; depth:2; content:"/lady_"; distance:0; fast_pattern; pcre:"/^\/v\d+\/lady_[ix]/"; http.user_agent; content:"curl/"; startswith; http.header_names; content:!"Referer|0d 0a|"; reference:md5,86ac68e5b09d1c4b157193bb6cb34007; reference:url,vms.drweb.com/virus/?_is=1&i=8400817; classtype:command-and-control; sid:2023035; rev:3; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2016_08_10, deployment Perimeter, malware_family Linux_Lady, signature_severity Major, tag c2, updated_at 2020_07_27, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)