Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SVCStealer 4.4 CnC Task Checkin (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/get.php"; endswith; fast_pattern; http.request_body; content:"tsk|3d 7b|"; startswith; pcre:"/^(?:(?:[a-z0-9]{8}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{4}\x2d)(?:[a-z0-9]{12}\x7d))$/R"; reference:url,x.com/naumovax/status/1932001327455797326; reference:md5,804abee66ca7c07365c191a87532e137; reference:md5,91e9d8beed1cd93b5d4845bbbcda70df; classtype:trojan-activity; sid:2062829; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_06_09, deployment Perimeter, malware_family SvcStealer, confidence High, signature_severity Critical, tag c2, tag AI_Generated_Description, updated_at 2025_06_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)