alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Win32/Cryptbot V2 Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/gate.php"; bsize:9; http.content_type; content:"multipart/form-data|3b 20|boundary="; startswith; pcre:"/^[A-Z0-9]{6,11}/Ri"; http.header_names; content:!"Referer"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|files|5b 5d 22 3b 20|filename|3d 22|"; fast_pattern; reference:md5,859c659aee8b897aeebf4b87364cc6d1; classtype:trojan-activity; sid:2038947; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_22, deployment Perimeter, former_category MALWARE, malware_family Cryptbot, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;)