ET MALWARE Bitter APT Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?h="; fast_pattern;
content:"|2a|"; distance:0;
http.user_agent;
content:"Windows Installer"; bsize:17;
http.header_names;
content:!"Referer";
Raw source ET MALWARE Bitter APT Activity (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 Bitter APT Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?h="; fast_pattern;
    content:"|2a|"; distance:0;
    http.user_agent;
    content:"Windows Installer"; bsize:17;
    http.header_names;
    content:!"Referer";
    reference:md5,1d7d9b2c46bd733f5270d34c4dd748e9;
    reference:url,twitter.com/h2jazi/status/1491852987324637185;
    classtype:trojan-activity;
    sid:2035180; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_02_11, deployment Perimeter, malware_family Bitter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_11;
)

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