ET MALWARE Win32/Valak - Stage 2 - Response - Plugin

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.response_body;
content:"|2d 2d|PLUGIN|2d 2d|"; startswith;
content:"|2d 2d|PD94bWwg"; distance:0;
Raw source ET MALWARE Win32/Valak - Stage 2 - Response - Plugin · 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 MALWARE Win32/Valak - Stage 2 - Response - Plugin";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.response_body;
    content:"|2d 2d|PLUGIN|2d 2d|"; startswith;
    content:"|2d 2d|PD94bWwg"; distance:0;
    reference:md5,c254b4f261a6f426c282ed8858a7bee0;
    reference:url,medium.com/@prsecurity_/casual-analysis-of-valak-c2-3497fdb79bf7;
    classtype:command-and-control;
    sid:2029196; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_22, deployment Perimeter, malware_family Win32_Valak, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_22;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.