alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Mispadu Stealer CnC Checkin M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/it.php?v1="; fast_pattern; content:"v2="; content:"v4=Windows"; content:"v5="; content:"v6=X"; http.header_names; content:"|0d 0a|Host|0d 0a|User-Agent|0d 0a|Accept|0d 0a 0d 0a|"; reference:url,unit42.paloaltonetworks.com/mispadu-infostealer-variant; classtype:trojan-activity; sid:2050709; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2024_02_05, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family mispadu_stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_10_03, reviewed_at 2024_10_03; target:src_ip;)