ET MALWARE Ursnif Variant Retrieving Payload (x32)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"X32.jpg"; fast_pattern; endswith;
http.header_names;
content:!"User-Agent|0d 0a|";
content:!"Accept";
content:!"Referer|0d 0a|";
Raw source ET MALWARE Ursnif Variant Retrieving Payload (x32) · 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 Ursnif Variant Retrieving Payload (x32)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"X32.jpg"; fast_pattern; endswith;
    http.header_names;
    content:!"User-Agent|0d 0a|";
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,4dbff312f5ee5bfbd757030109faec2d;
    classtype:trojan-activity;
    sid:2023871; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_06, deployment Perimeter, malware_family ursnif, confidence High, signature_severity Major, updated_at 2020_10_08;
)

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