alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected Kimsuky APT Related ToddlerShark Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/microsoft/search"; startswith; fast_pattern; http.host; content:".000webhostapp.com"; endswith; http.content_type; content:"application/x-www-form-urlencoded"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,www.kroll.com/en/insights/publications/cyber/screenconnect-vulnerability-exploited-to-deploy-babyshark; classtype:trojan-activity; sid:2051497; rev:2; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_06, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_28; target:src_ip;)