alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE IndigoZebra APT xCaon/Textpadx Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/kw.asp"; endswith; fast_pattern; http.request_body; content:"d="; startswith; content:"&k="; distance:0; content:"&w="; distance:0; http.header_names; content:!"Referer"; reference:md5,3562bf97997c54d74f58d4c1ad84fcea; reference:url,research.checkpoint.com/2021/indigozebra-apt-continues-to-attack-central-asia-with-evolving-tools/; classtype:command-and-control; sid:2033219; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_07_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_02;)