alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET RETIRED PlanetStealer CnC Checkin - Server Response"; flow:established,to_client; flowbits:isset,ET.PlanetStealer.Checkin; http.stat_code; content:"200"; http.content_len; byte_test:0,=,66,0,string,dec; file.data; content:"|7b 22|success|22 3a|true|2c 22|callback|22 3a 22|"; fast_pattern; startswith; pcre:"/^[a-f0-9]{8}-([a-f0-9]{4}-){3}[a-f0-9]{12}\x22\x7d/R"; reference:md5,99a0225b149f9a918aaccafa73c42a1f; reference:url,community.emergingthreats.net/t/planetstealer; reference:url,app.any.run/tasks/a55c931e-99d7-4b32-8672-2b5733ae3dd4; classtype:trojan-activity; sid:2051491; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_05, deployment Perimeter, former_category MALWARE, malware_family PlanetStealer, performance_impact Low, confidence High, signature_severity Major, tag InfoStealer, tag PlanetStealer, updated_at 2025_07_28; target:dest_ip;)