alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Sality Variant Downloader Activity (2)"; flow:established,to_server; http.uri; content:"/?rnd="; nocase; content:"&id="; pcre:"/\/\?rnd=\d+&id=\d+$/"; reference:md5,579f2e29434218d62d31625d369cbc42; reference:md5,76cf08503cdd036850bcc4f29f64022f; classtype:trojan-activity; sid:2011337; rev:5; metadata:created_at 2010_09_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_10;)