alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Generic Spambot-Spyware Access"; flow:established,to_server; http.uri; content:"/synctl/"; nocase; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; classtype:trojan-activity; sid:2002963; rev:9; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_08;)