alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT AjaxPro RCE Attempt (CVE-2021-23758)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/ajaxpro/"; fast_pattern; http.request_body; content:"|5f 5f|type"; content:"Object"; nocase; reference:url,twitter.com/sirifu4k1/status/1470647490; reference:cve,2021-23758; classtype:attempted-admin; sid:2034729; rev:2; metadata:attack_target Server, created_at 2021_12_14, cve CVE_2021_23758, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2021_12_14, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)