Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Aura Stealer CnC Exfil (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:9; content:"/api/send"; fast_pattern; http.user_agent; content:!"python"; nocase; content:!"curl"; nocase; http.header_names; content:!"|0d 0a|x-"; nocase; http.request_body; content:"form|2d|data|3b 20|name|3d 22|data"; pcre:"/^\d\x22[\r\n]/R"; threshold:type limit,count 1,seconds 300,track by_src; reference:md5,45c7e81edfdc705bce7cb688d333fbf1; reference:url,community.emergingthreats.net/t/aura-stealer/3108/3; classtype:command-and-control; sid:2065858; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_11_20, deployment Perimeter, deployment SSLDecrypt, malware_family AuraStealer, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_20, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)