ET HUNTING Suspected Gamaredon Template Retrieval

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:"/WIN-"; startswith; fast_pattern;
http.user_agent;
content:"Microsoft Office"; startswith;
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET HUNTING Suspected Gamaredon Template Retrieval · 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 HUNTING Suspected Gamaredon Template Retrieval";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:"/WIN-"; startswith; fast_pattern;
    http.user_agent;
    content:"Microsoft Office"; startswith;
    http.header_names;
    content:!"Referer";
    reference:md5,3cc4610c5487ec7326d98797fd119b2e;
    reference:url,twitter.com/Cyber0verload/status/1691784626958737562;
    classtype:bad-unknown;
    sid:2047927; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_09_06, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_06, reviewed_at 2023_09_06;
    target:src_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.