Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/jquery-"; depth:8; content:".min.js"; endswith; http.header; content:"Referer|3a 20|http|3a|//code.jquery.com/|0d 0a|Accept"; fast_pattern; http.accept; content:"text/html,application/xhtml+xml,application/xml|3b|q=0.9,*/*|3b|q=0.8"; bsize:63; http.accept_enc; content:"gzip, deflate"; bsize:13; http.cookie; content:"__cfduid="; depth:9; isdataat:!172,relative; pcre:"/^[A-Za-z0-9_-]{171}$/Rs"; reference:md5,8c9903db02a29847d04d0fd81dd67046; classtype:command-and-control; sid:2033658; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_22, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_03_24, reviewed_at 2024_03_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)