ET MALWARE APT33/CharmingKitten Retrieving New Payload (flowbit set)

Query · suricata

flow:established,to_server;
flowbits:set,ET.APT33CharmingKitten.1;
http.method;
content:"GET";
http.uri;
content:"/images/static/content/"; depth:23; fast_pattern; endswith;
http.header_names;
content:!"Cache";
content:!"Accept";
content:!"Referer";

Rule dependencies

Feeds into

  • 1 rule read ET.APT33CharmingKitten.1 · view all
Raw source ET MALWARE APT33/CharmingKitten Retrieving New Payload (flowbit set) · 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 APT33/CharmingKitten Retrieving New Payload (flowbit set)";
    flow:established,to_server;
    flowbits:set,ET.APT33CharmingKitten.1;
    http.method;
    content:"GET";
    http.uri;
    content:"/images/static/content/"; depth:23; fast_pattern; endswith;
    http.header_names;
    content:!"Cache";
    content:!"Accept";
    content:!"Referer";
    reference:md5,9881bccf12fd8ae71a03247d2ad61a06;
    classtype:targeted-activity;
    sid:2026577; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_11_05, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag APT33, tag CharmingKitten, updated_at 2020_09_16;
)

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