ET MALWARE Win32/LeftHook Stealer CnC Command - get_socket (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.connection;
content:"keep-alive";
http.content_len;
content:"49"; bsize:2;
http.header;
content:"Origin: chrome-extension://";
pcre:"/^(?:[a-z]{32})\x0d\x0a/R";
http.request_body; bsize:49;
content:"action=get_socket&botID="; startswith; fast_pattern;
pcre:"/^[a-zA-Z0-9]{25}$/R";
Raw source ET MALWARE Win32/LeftHook Stealer CnC Command - get_socket (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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/LeftHook Stealer CnC Command - get_socket (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.connection;
    content:"keep-alive";
    http.content_len;
    content:"49"; bsize:2;
    http.header;
    content:"Origin: chrome-extension://";
    pcre:"/^(?:[a-z]{32})\x0d\x0a/R";
    http.request_body; bsize:49;
    content:"action=get_socket&botID="; startswith; fast_pattern;
    pcre:"/^[a-zA-Z0-9]{25}$/R";
    reference:md5,61bb691f0c875d3d82521a6fa878e402;
    reference:url,twitter.com/Jane_0sint/status/1648075834702413830;
    classtype:trojan-activity;
    sid:2045003; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_04_18, malware_family Win32_LeftHook, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_18;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.