alert http $EXTERNAL_NET any -> any any (msg:"ET MALWARE TwoFace WebShell Detected"; flow:to_server,established; http.method; content:"POST"; http.uri; content:".aspx"; http.cookie; content:"data=pro#=#"; fast_pattern; reference:url,www.emanueledelucia.net/a-dive-into-apt34-aka-oilrig-aka-cobalt-gypsy-twoface-webshell/; classtype:targeted-activity; sid:2027903; rev:2; metadata:affected_product Web_Server_Applications, attack_target Client_Endpoint, created_at 2019_08_22, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_01;)