alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed ClickFix WebPage Inbound"; flow:established,to_client; http.response_body; content:"|28|function|28 5f|0x"; content:"|27|i|5c|x27m|5c|x20not|5c|x20a|5c|x20robot|27|"; nocase; fast_pattern; content:"captcha"; nocase; content:"|3d 27|powershell|5c|x20|2d|"; classtype:trojan-activity; sid:2067131; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_27, deployment Perimeter, deployment SSLDecrypt, malware_family ClickFix, confidence High, signature_severity Major, updated_at 2026_01_27; target:dest_ip;)