ET MALWARE DeathStalker APT Related Maldoc Activity (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE DeathStalker APT Related Maldoc Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api?req="; startswith;
    http.host;
    content:".pythonanywhere.com"; endswith; fast_pattern;
    http.user_agent;
    content:"|3b 20|ms-office|3b 20|";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,871d64d8330d956593545dfff069194e;
    reference:md5,6161845ad2c2a2e830f249df4e0c502a;
    reference:url,securelist.com/what-did-deathstalker-hide-between-two-ferns/99616/;
    reference:url,usa.kaspersky.com/about/press-releases/2020_infamous-hacker-for-hire-group-death-stalker-hits-the-americas-and-europe-with-new-power-pepper-malware;
    classtype:trojan-activity;
    sid:2036462; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_05_04, deployment Perimeter, deployment SSLDecrypt, malware_family DeathStalker, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_04;
)