ET MALWARE Win/Ghostlocker Ransomware Activity M1 (POST)

Query · suricata

flow:established,to_server;
urilen:18;
http.method;
content:"POST";
http.uri;
content:"/incrementLaunches"; fast_pattern;
http.user_agent;
content:"python-requests/"; startswith;
http.accept_enc;
content:"|20|zstd";
http.request_body;
content:"|7b 22 75 73 65 72 6e 61 6d 65 22 3a 20 22 47 68 6f 73 74 22 7d|"; bsize:21;
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Win/Ghostlocker Ransomware Activity M1 (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 Win/Ghostlocker Ransomware Activity M1 (POST)";
    flow:established,to_server;
    urilen:18;
    http.method;
    content:"POST";
    http.uri;
    content:"/incrementLaunches"; fast_pattern;
    http.user_agent;
    content:"python-requests/"; startswith;
    http.accept_enc;
    content:"|20|zstd";
    http.request_body;
    content:"|7b 22 75 73 65 72 6e 61 6d 65 22 3a 20 22 47 68 6f 73 74 22 7d|"; bsize:21;
    http.header_names;
    content:!"Referer";
    reference:md5,dfb5e2963e9bc48c904f4ac5978fe9ea;
    reference:url,www.rapid7.com/blog/post/2023/11/08/ghostlocker-a-work-in-progress-raas/;
    classtype:trojan-activity;
    sid:2050993; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_02_21, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_21;
    target:src_ip;
)

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