alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE CeranaKeeper BingoShell Activity (Create Github Ref)"; flow:established,to_server; http.method; content:"POST"; http.host; content:"api.github.com"; http.uri; content:"/repos/"; startswith; content:"/git/refs"; distance:0; endswith; http.request_body; content:"|22|ref|22 3a 22|refs|2f|heads|2f|share|2d|"; fast_pattern; pcre:"/^[a-z]{6}/Ri"; reference:url,web-assets.esetstatic.com/wls/en/papers/white-papers/ceranakeeper.pdf; reference:url,docs.github.com/en/rest/git/refs?apiVersion=2022-11-28#create-a-reference; classtype:command-and-control; sid:2056498; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_10_05, deployment Perimeter, malware_family CeranaKeeper, confidence High, signature_severity Major, tag c2, updated_at 2024_10_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)