alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Onliner Requesting Additional Modules"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?&1001="; fast_pattern; content:"&99="; distance:1; within:5; content:"&f2="; distance:0; http.protocol; content:"HTTP/1.0"; http.header_names; content:"Accept-Charset"; content:!"Referer"; content:!"Cache"; reference:url,www.blueliv.com/blog/research/analysis-spam-distribution-botnet-onliner-spambot/; classtype:trojan-activity; sid:2027809; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_06, deployment Perimeter, malware_family Onliner, performance_impact Low, confidence High, signature_severity Major, tag SpamBot, updated_at 2020_08_31;)