alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/Atshz.A Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"data.php?t=l&m=0"; fast_pattern; endswith; http.user_agent; content:"MSIE 5.01"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,e7b8bb0f99c7f6428dbac35c01fcdd9b; classtype:pup-activity; sid:2043008; rev:7; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_05_01, deployment Perimeter, confidence High, signature_severity Minor, updated_at 2024_04_28, former_sid 2830630;)