ET MALWARE CloudAtlas APT Related Maldoc Activity M7 (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/?wp-content"; startswith; fast_pattern;
content:".css?ver="; distance:0;
content:"time="; distance:0;
content:"/"; within:11;
http.user_agent;
content:"|3b 20|ms-office|3b 20|";
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE CloudAtlas APT Related Maldoc Activity M7 (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 CloudAtlas APT Related Maldoc Activity M7 (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/?wp-content"; startswith; fast_pattern;
    content:".css?ver="; distance:0;
    content:"time="; distance:0;
    content:"/"; within:11;
    http.user_agent;
    content:"|3b 20|ms-office|3b 20|";
    http.header_names;
    content:!"Referer";
    reference:md5,b1995d8a9df9bd8ce23d38b0ab454580;
    reference:url,www.facct.ru/blog/cloud-atlas;
    classtype:trojan-activity;
    sid:2049798; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_20, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_20;
    target:src_ip;
)

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.