ET MALWARE Gamaredon APT Related Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/^\/[0-9]{2}\.[0-9]{2}_[a-zA-Z]{2,3}\//";
content:".rtf"; fast_pattern; endswith;
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;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/[0-9]{2}\.[0-9]{2}_[a-zA-Z]{2,3}\//";
    content:".rtf"; fast_pattern; endswith;
    http.header_names;
    content:!"Referer";
    reference:md5,a92725505b8c44cd167ad1c3c8b122ab;
    reference:md5,5c1d61ecae84008164bf388712c6b93c;
    reference:url,unit42.paloaltonetworks.com/trident-ursa/;
    classtype:trojan-activity;
    sid:2042994; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_12_22, deployment Perimeter, deployment SSLDecrypt, malware_family Gamaredon, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_22;
    target:src_ip;
)

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