Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Beacon Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/jquery-3.3.1.min.js"; bsize:20; fast_pattern; http.cookie; content:"__cfduid="; startswith; http.user_agent; content:"Mozilla/5.0|20 28|Windows|20|NT|20|6.3|3b 20|Trident/7.0|3b 20|rv|3a|11.0|29 20|like|20|Gecko"; bsize:61; reference:md5,b3f3de10b3c1c15491c53223f1b5979f; reference:url,documents.trendmicro.com/assets/white_papers/wp-earth-baku-an-apt-group-targeting-indo-pacific-countries.pdf; classtype:trojan-activity; sid:2033928; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_09_13, deployment Perimeter, deployment SSLDecrypt, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2021_09_13, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)