ET MALWARE Maldoc Activity Sending Windows User Info (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/eabr/"; startswith; fast_pattern;
pcre:"/^[a-zA-z]{8}\./R";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Maldoc Activity Sending Windows User Info (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 Maldoc Activity Sending Windows User Info (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/eabr/"; startswith; fast_pattern;
    pcre:"/^[a-zA-z]{8}\./R";
    http.header_names;
    content:!"Referer";
    reference:md5,c7f14020934ebcc55546fbd73a6e49d0;
    reference:url,twitter.com/ShadowChasing1/status/1417650046485495808;
    classtype:trojan-activity;
    sid:2033457; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_27, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_27;
)

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