ET MALWARE Suspected Kimsuky APT Related ToddlerShark Activity (POST)

Query · suricata

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;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Suspected Kimsuky APT Related ToddlerShark Activity (POST) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
    content:!"Referer";
    reference:url,www.kroll.com/en/insights/publications/cyber/screenconnect-vulnerability-exploited-to-deploy-babyshark;
    classtype:trojan-activity;
    sid:2051497; rev:1;
    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_03_06;
    target:src_ip;
)

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