alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET EXPLOIT VMware vCenter RCE Exploitation Attempt M2 (CVE-2021-22005)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"&_i=."; content:"../../"; fast_pattern; reference:cve,2021-22005; classtype:attempted-admin; sid:2034037; rev:1; metadata:attack_target Server, created_at 2021_09_28, cve CVE_2021_22005, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, tag CISA_KEV, updated_at 2021_09_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;)