ET MALWARE Win32/Kumquat Loader Activity (Connect)

Query · suricata

flow:established,to_server;
flowbits:set,ET.kumquat;
flowbits:noalert;
content:"MQIsdp|03|"; fast_pattern; offset:4; depth:7;
content:"|00 26|"; distance:3; within:2;
pcre:"/^{(?:[0-9a-f]{8})-(?:[0-9a-f]{4})-(?:[0-9a-f]{4})-(?:[0-9a-f]{4})-(?:[0-9a-f]{12})}$/R";
target:src_ip;

Rule dependencies

Feeds into

Raw source ET MALWARE Win32/Kumquat Loader Activity (Connect) · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Kumquat Loader Activity (Connect)";
    flow:established,to_server;
    flowbits:set,ET.kumquat;
    flowbits:noalert;
    content:"MQIsdp|03|"; fast_pattern; offset:4; depth:7;
    content:"|00 26|"; distance:3; within:2;
    pcre:"/^{(?:[0-9a-f]{8})-(?:[0-9a-f]{4})-(?:[0-9a-f]{4})-(?:[0-9a-f]{4})-(?:[0-9a-f]{12})}$/R";
    reference:md5,5e68e2c7b87e0c23904987e694f5b1ee;
    reference:md5,bff4ce3dbda522e92970c5d1d0471e63;
    classtype:trojan-activity;
    sid:2044066; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2023_02_02, deployment Perimeter, malware_family Kumquat, confidence High, signature_severity Major, tag TA416, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_11, reviewed_at 2024_04_09;
    target:src_ip;
)

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