alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Baidu.com Spyware Bar Pulling Data"; flow:established,to_server; http.uri; content:"/cpro/ui/ui"; nocase; http.header; content:"baidu.com"; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:url,www.pctools.com/mrc/infections/id/BaiDu/; classtype:pup-activity; sid:2003578; rev:10; metadata:created_at 2010_07_30, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_29;)