ET RETIRED Win32/SSLoad Payload Response

Query · suricata

flow:established,to_client;
flowbits:isset,ET.SSLoad1_1.PayloadRetrieval;
http.stat_code;
content:"200";
http.header;
content:"Content-Disposition|3a 20|attachment|3b 20|filename=";
content:"crypted_dll.bin"; fast_pattern; within:15;
file.data;
content:"7zXZ"; depth:5;
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET RETIRED Win32/SSLoad Payload Response · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET RETIRED Win32/SSLoad Payload Response";
    flow:established,to_client;
    flowbits:isset,ET.SSLoad1_1.PayloadRetrieval;
    http.stat_code;
    content:"200";
    http.header;
    content:"Content-Disposition|3a 20|attachment|3b 20|filename=";
    content:"crypted_dll.bin"; fast_pattern; within:15;
    file.data;
    content:"7zXZ"; depth:5;
    reference:md5,ca303668b5420c022ef9c78ce1f2bfb7;
    classtype:trojan-activity;
    sid:2052121; rev:2;
    metadata:created_at 2024_04_16, former_category MALWARE, malware_family Win32_SSLoad, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_14, reviewed_at 2025_07_14;
    target:dest_ip;
)

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