ET MALWARE [ANY.RUN] LgoogLoader Retrieving Config File

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:".CfgEncFile"; endswith;
http.content_len;
byte_test:0,=,0,0,string,dec;
http.user_agent;
content:"Chrome"; bsize:6;
http.header_names;
content:!"Referer|0d 0a|";
target:src_ip;
Raw source ET MALWARE [ANY.RUN] LgoogLoader Retrieving Config File · 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 [ANY.RUN] LgoogLoader Retrieving Config File";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:".CfgEncFile"; endswith;
    http.content_len;
    byte_test:0,=,0,0,string,dec;
    http.user_agent;
    content:"Chrome"; bsize:6;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,d964e6ad2ec6ca6d7ecdfe964a5b10b7;
    reference:md5,69525fa93fd47eb3c533afe3b1baba48;
    reference:url,community.emergingthreats.net/t/lgoogloader-pikabot-redline-rules/597/;
    classtype:trojan-activity;
    sid:2045974; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_05_31, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_28;
    target:src_ip;
)

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