ET MALWARE MalDoc/Gamaredon CnC Activity M4

Query · suricata

flow:established,to_server;
http.method;
content:"OPTIONS";
http.uri;
content:"/ADMIN-"; startswith; fast_pattern;
http.user_agent;
content:"Microsoft Office Protocol Discovery";
Raw source ET MALWARE MalDoc/Gamaredon CnC Activity M4 · 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 MalDoc/Gamaredon CnC Activity M4";
    flow:established,to_server;
    http.method;
    content:"OPTIONS";
    http.uri;
    content:"/ADMIN-"; startswith; fast_pattern;
    http.user_agent;
    content:"Microsoft Office Protocol Discovery";
    reference:md5,b7fe95ccd715a8dd6eb7519ff15e1fc5;
    reference:url,community.emergingthreats.net/t/signature-maldoc-gamaredon-cnc-admin-prepend/809/2;
    classtype:trojan-activity;
    sid:2046949; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_27, deployment Perimeter, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_27;
)

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