alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE ShivaGood Ransomware CnC Checkin";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.request_body;
content:"ip="; startswith;
content:"&pcname="; distance:0;
content:"&username="; distance:0;
content:"&privatekey="; distance:0; fast_pattern;
http.header_names;
content:!"Referer";
reference:md5,ee732410b7389a047177b2e730742f8d;
classtype:command-and-control;
sid:2029177; rev:1;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_17, deployment Perimeter, malware_family ShivaGood, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_17, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)