alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/SuperDiag PUP CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/diag/"; startswith; content:".txt"; endswith; http.host; content:"superdiag.xyz"; fast_pattern; http.header_names; content:!"Referer"; content:!"User-Agent"; threshold:type limit, count 1, seconds 60, track by_src; reference:md5,0ef7d3285b890c229e1aee9fe74c5cc0; classtype:pup-activity; sid:2038827; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_14, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_14, reviewed_at 2025_10_24;)