ET MALWARE Win32/Gamaredon CnC Activity (POST) M3

Query · suricata

flow:established,to_server;
urilen:27;
http.method;
content:"POST";
http.uri;
content:"/intention"; startswith; fast_pattern;
pcre:"/^(?P<ID>[0-9]{2})\x2findex\x2ehtml\x3d\x3f(?P=ID)$/R";
http.host;
pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
http.header_names;
content:!"Referer";
Raw source ET MALWARE Win32/Gamaredon CnC Activity (POST) M3 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Gamaredon CnC Activity (POST) M3";
    flow:established,to_server;
    urilen:27;
    http.method;
    content:"POST";
    http.uri;
    content:"/intention"; startswith; fast_pattern;
    pcre:"/^(?P<ID>[0-9]{2})\x2findex\x2ehtml\x3d\x3f(?P=ID)$/R";
    http.host;
    pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
    http.header_names;
    content:!"Referer";
    reference:md5,4924a85d0c77c9b7b38faaab94636d9a;
    reference:url,twitter.com/StopMalvertisin/status/1645771054462402560;
    classtype:trojan-activity;
    sid:2044918; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_04_11, deployment Perimeter, malware_family Win32_Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_11;
)

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