ET MALWARE Kimsuky Maldoc Activity

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:"/tmp?q=6"; endswith; fast_pattern;
http.user_agent;
content:"|20|Office|20|";
http.header_names;
content:!"Referer";
content:!"Accept";
Raw source ET MALWARE Kimsuky Maldoc Activity · 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 Kimsuky Maldoc Activity";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:"/tmp?q=6"; endswith; fast_pattern;
    http.user_agent;
    content:"|20|Office|20|";
    http.header_names;
    content:!"Referer";
    content:!"Accept";
    reference:url,twitter.com/ShadowChasing1/status/1372464570183208961;
    reference:md5,1670bb091dba017606ea5e763072d45f;
    classtype:trojan-activity;
    sid:2032275; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_03_22, deployment Perimeter, malware_family Kimsuky, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_22;
)

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.