ET MALWARE Win32/44Caliber Stealer Variant Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.request_body;
content:"44CALIBER|20|MODIFIED|20|BY"; nocase; fast_pattern;
content:"Build|3a 20|"; distance:0;
content:"PC|3a 20|"; distance:0;
Raw source ET MALWARE Win32/44Caliber Stealer Variant 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 Win32/44Caliber Stealer Variant Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.request_body;
    content:"44CALIBER|20|MODIFIED|20|BY"; nocase; fast_pattern;
    content:"Build|3a 20|"; distance:0;
    content:"PC|3a 20|"; distance:0;
    reference:url,twitter.com/James_inthe_box/status/1431366451231801346;
    reference:url,app.any.run/tasks/366ad91a-2b9d-4ca0-8e1d-269f61558aa6/;
    reference:md5,32595ac79386e97e05f876c5dd2ab874;
    classtype:command-and-control;
    sid:2033833; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2021_08_30, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_44Caliber, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_10, reviewed_at 2023_11_07;
)

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