ET MALWARE Win32/Trojan.Valyria.6015 CnC Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/eln-images/"; startswith; fast_pattern;
http.user_agent;
content:"WindowsPowerShell/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Win32/Trojan.Valyria.6015 CnC Activity (GET) · 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 Win32/Trojan.Valyria.6015 CnC Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/eln-images/"; startswith; fast_pattern;
    http.user_agent;
    content:"WindowsPowerShell/";
    http.header_names;
    content:!"Referer";
    reference:md5,a118a3030807156eca8f805b8b83ce1f;
    classtype:trojan-activity;
    sid:2035223; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_18, deployment Perimeter, malware_family Win32_Trojan_Valyria_6015, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_18, reviewed_at 2024_06_26;
)

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