ET MALWARE NORTHSTAR Client Data POST

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/getjuice.php"; bsize:13; fast_pattern;
http.content_type;
content:"multipart/form-data|3b| boundary=---------------------"; startswith;
http.header;
content:"|0d 0a|Expect|3a 20|100-continue|0d 0a|";
http.header_names;
content:!"Referer";
content:!"User-Agent";
Raw source ET MALWARE NORTHSTAR Client Data POST · 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 NORTHSTAR Client Data POST";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/getjuice.php"; bsize:13; fast_pattern;
    http.content_type;
    content:"multipart/form-data|3b| boundary=---------------------"; startswith;
    http.header;
    content:"|0d 0a|Expect|3a 20|100-continue|0d 0a|";
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    reference:url,github.com/EnginDemirbilek/NorthStarC2/;
    classtype:trojan-activity;
    sid:2030189; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_05_19, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_19;
)

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