ET MALWARE MSIL/InfoStealer Variant Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri.raw;
content:"|2f 2f|data.php"; bsize:10; fast_pattern;
http.request_body;
content:"|5b|"; startswith;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a 0d 0a|"; bsize:48;
Raw source ET MALWARE MSIL/InfoStealer 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 MSIL/InfoStealer Variant Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri.raw;
    content:"|2f 2f|data.php"; bsize:10; fast_pattern;
    http.request_body;
    content:"|5b|"; startswith;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a 0d 0a|"; bsize:48;
    reference:md5,0c6320d07c1d933dfecf6d6104ed7f99;
    classtype:trojan-activity;
    sid:2039512; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_10_24, deployment Perimeter, deployment SSLDecrypt, malware_family MSIL_InfoStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_24;
)

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