alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Evilnum Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/actions/authenticate.php"; bsize:25; fast_pattern; http.cookie; content:"_gid="; startswith; reference:url,twitter.com/ShadowChasing1/status/1399697694491254798; reference:md5,3f230856172f211d5c9ed44ea783f850; classtype:trojan-activity; sid:2033071; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_02, deployment Perimeter, malware_family EvilNum, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_02;)