ET MALWARE Gamaredon APT Related Maldoc Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri.raw;
content:"/%D0"; startswith;
content:"-%D0%9F"; distance:0; fast_pattern;
content:".dot"; endswith;
http.user_agent;
content:"|3b 20|ms-office|3b 20|";
http.header;
content:!"Referer";
Raw source ET MALWARE Gamaredon APT Related Maldoc 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 Maldoc Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri.raw;
    content:"/%D0"; startswith;
    content:"-%D0%9F"; distance:0; fast_pattern;
    content:".dot"; endswith;
    http.user_agent;
    content:"|3b 20|ms-office|3b 20|";
    http.header;
    content:!"Referer";
    reference:md5,91c27abec8fda1410e2fae396f592e93;
    reference:md5,8d1ce6280d2f66ff3e4fe1644bf24247;
    reference:url,twitter.com/500mk500/status/1502545185510731777;
    classtype:trojan-activity;
    sid:2035450; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_03_14, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_14;
)

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.