ET MALWARE NightfallGT Mercurial Grabber

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /api/webhooks/"; startswith;
http.host;
content:"discord";
http.request_body;
content:"|2c 22|username|22 3a 20 22|Mercurial|20|Grabber|22 2c 20 22|"; fast_pattern;
Raw source ET MALWARE NightfallGT Mercurial Grabber · 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 http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE NightfallGT Mercurial Grabber";
    flow:established,to_server;
    http.request_line;
    content:"POST /api/webhooks/"; startswith;
    http.host;
    content:"discord";
    http.request_body;
    content:"|2c 22|username|22 3a 20 22|Mercurial|20|Grabber|22 2c 20 22|"; fast_pattern;
    reference:md5,252689e3688229ce5e3e26a2ef0a5bf1;
    reference:url,github.com/NightfallGT/Mercurial-Grabber;
    classtype:command-and-control;
    sid:2033197; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_28, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30;
)

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