alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Atomic Stealer Related Activity (POST)";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/p2p"; bsize:4;
http.header.raw;
content:"Host|3a|";
content:!"|20|"; within:1;
content:"|0d 0a|uuid|3a|"; fast_pattern;
content:!"|20|"; within:1;
http.request_body;
content:"PK"; startswith;
content:"rootPK"; distance:0;
reference:md5,8a2f7bacd04659f0d838e5b6c892b962;
reference:url,www.malwarebytes.com/blog/threat-intelligence/2024/01/atomic-stealer-rings-in-the-new-year-with-updated-version;
classtype:trojan-activity;
sid:2050278; rev:1;
metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2024_01_22, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_22;
target:src_ip;
)