alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/RokRat CnC Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2f|listfolder|3f|path|3d 2f|"; bsize:18; fast_pattern; http.user_agent; content:"Googlebot"; http.header; content:"Authorization|3a 20|Bearer"; reference:url,research.checkpoint.com/2023/chain-reaction-rokrats-missing-link; classtype:trojan-activity; sid:2045277; 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;)