ET MALWARE TA430/Andariel ACRES Backdoor Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?mailid=";
content:"&action=inbox&param="; fast_pattern; distance:12; within:20;
content:"&session="; distance:0;
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET MALWARE TA430/Andariel ACRES Backdoor 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 TA430/Andariel ACRES Backdoor Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?mailid=";
    content:"&action=inbox&param="; fast_pattern; distance:12; within:20;
    content:"&session="; distance:0;
    http.header_names;
    content:!"Referer";
    reference:url,labs.withsecure.com/content/dam/labs/docs/WithSecure-Lazarus-No-Pineapple-Threat-Intelligence-Report-2023.pdf;
    reference:md5,c027d641c4c1e9d9ad048cda2af85db6;
    classtype:trojan-activity;
    sid:2044086; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_02_03, deployment Perimeter, malware_family Andariel, malware_family TA430, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_03;
    target:src_ip;
)

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