ET MALWARE Win32/Snojan Variant Sending System Information (GET)


Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri.raw;
content:".php?payload1=NetBios|25 32 30|name|3a 25 32 30|"; fast_pattern;
content:"&payload2=Username|3a 25 32 30|"; distance:0;
content:"&payload3=Operating|25 32 30|system|3a 25 32 30|"; distance:0;
content:"&payload4=Local|25 32 30|IP|3a 25 32 30|"; distance:0;
http.header_names;
content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
target:src_ip;
Raw source ET MALWARE Win32/Snojan Variant Sending System Information (GET) · Suricata
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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/Snojan Variant Sending System Information (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri.raw;
    content:".php?payload1=NetBios|25 32 30|name|3a 25 32 30|"; fast_pattern;
    content:"&payload2=Username|3a 25 32 30|"; distance:0;
    content:"&payload3=Operating|25 32 30|system|3a 25 32 30|"; distance:0;
    content:"&payload4=Local|25 32 30|IP|3a 25 32 30|"; distance:0;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
    reference:md5,8313df7915e10fde7b3ee4bbddce4f31;
    classtype:trojan-activity;
    sid:2044258; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_02_21, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Snojan, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_21;
    target:src_ip;
)

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