alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Win32/ViSystem CnC? Checkin"; flow:established,to_server; content:"POST"; http_method; content:".php?hwid="; fast_pattern; http_uri; content:"&pwd="; http_uri; content:"&cc="; http_uri; content:"&fz="; http_uri; content:"&df="; http_uri; content:"&wlt="; http_uri; http_header_names; content:!"Referer"; metadata: former_category MALWARE; reference:md5,9b0aa282698db89034d254076dd03e26; classtype:trojan-activity; sid:2029212; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2019_12_31, malware_family ViSystem?, updated_at 2019_12_31;)

Added 2019-12-31 19:14:18 UTC