alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/RokRat CnC Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"|2f|uploadfile|3f|path|3d 2f|Comment|26|filename|3d|"; startswith; fast_pattern; http.user_agent; content:"Googlebot"; http.header; content:"Authorization|3a 20|Bearer"; http.request_body; content:"Content|2d|Type|3a 20|voice|2f|mp3|20|"; reference:url,research.checkpoint.com/2023/chain-reaction-rokrats-missing-link; classtype:trojan-activity; sid:2045278; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_01, deployment Perimeter, deployment SSLDecrypt, malware_family Rokrat, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_01;)