ET MALWARE Gamaredon APT Related Activity (GET)

Query · suricata

flow:established,to_server;
urilen:>25;
http.uri;
content:".sis"; endswith; fast_pattern;
http.user_agent;
content:"|3b 20|ms-office|3b 20|";
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE Gamaredon APT Related Activity (GET) · 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 Gamaredon APT Related Activity (GET)";
    flow:established,to_server;
    urilen:>25;
    http.uri;
    content:".sis"; endswith; fast_pattern;
    http.user_agent;
    content:"|3b 20|ms-office|3b 20|";
    http.header_names;
    content:!"Referer";
    reference:md5,eae6501eca7f6f7a1df447ab68d97932;
    reference:md5,80a7b2699e245f8cd1ae58f22dc336a2;
    reference:url,twitter.com/StopMalvertisin/status/1625032155255689216;
    classtype:trojan-activity;
    sid:2044197; rev:2;
    metadata:created_at 2023_02_13, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_07, reviewed_at 2023_11_06;
    target:src_ip;
)

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