ET MALWARE MSIL/CoderVir Stealer Zip Upload

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.content_type;
content:"multipart/form-data|3b|"; startswith;
http.request_body;
content:"name|3d 22|file|22 3b 20|filename|3d 22|LOG|5f|"; fast_pattern;
pcre:"/^[A-F0-9]{24}/R";
content:"|2e|zip|22 0d 0a|Content-Type|3a 20|application/octet-stream|0d 0a 0d 0a|PK|03 04|"; within:53;
Raw source ET MALWARE MSIL/CoderVir Stealer Zip Upload · 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 MSIL/CoderVir Stealer Zip Upload";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.content_type;
    content:"multipart/form-data|3b|"; startswith;
    http.request_body;
    content:"name|3d 22|file|22 3b 20|filename|3d 22|LOG|5f|"; fast_pattern;
    pcre:"/^[A-F0-9]{24}/R";
    content:"|2e|zip|22 0d 0a|Content-Type|3a 20|application/octet-stream|0d 0a 0d 0a|PK|03 04|"; within:53;
    reference:md5,35ff637ac2748789925a34f893376545;
    classtype:command-and-control;
    sid:2031620; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_02_13, deployment Perimeter, malware_family MSIL_CoderVir, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_13;
)

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