Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE KINS/ZeusVM Variant CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php/"; fast_pattern; pcre:"/\.php\/(?:[a-zA-Z0-9]+\/)+[A-F0-9]{8}$/"; http.user_agent; pcre:"/^[^\r\n]+(?: MSIE |rv\x3a11)/"; http.request_body; pcre:"/^[\x20-\x7e\s]{0,20}[^\x20-\x7e\s]/"; http.header_names; content:!"Referer|0d 0a|"; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,7a015848f24de23da43e2ca9970df11e; classtype:command-and-control; sid:2021520; rev:6; metadata:attack_target Client_Endpoint, created_at 2015_07_23, deployment Perimeter, performance_impact Significant, signature_severity Major, tag c2, updated_at 2024_04_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)