alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Atya Dropper Possible Rootkit - HTTP GET"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"b="; nocase; content:"&idf="; nocase; content:"&v="; nocase; content:"&o="; nocase; reference:url,www.paretologic.com/resources/definitions.aspx?remove=%41%67%65%6e%74%20%41%74%79%61%20%54%72%6f%6a%61%6e; classtype:trojan-activity; sid:2009450; rev:7; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)