ET MALWARE CMDEmber Backdoor Style Request

Query · suricata

flow:established,to_server;
http.method;
content:"PUT";
http.uri;
content:"/|28|"; startswith;
content:"|29|"; distance:4; within:1;
content:"/.json?print=silent"; distance:14; within:19; endswith; fast_pattern;
http.request_body;
content:"|7b 22 64 65 74 61 69 6c 22 3a 22|"; startswith;
http.header_names;
content:!"User-Agent|0d 0a|";
content:!"Referer|0d 0a|";
target:src_ip;
Raw source ET MALWARE CMDEmber Backdoor Style Request · 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 CMDEmber Backdoor Style Request";
    flow:established,to_server;
    http.method;
    content:"PUT";
    http.uri;
    content:"/|28|"; startswith;
    content:"|29|"; distance:4; within:1;
    content:"/.json?print=silent"; distance:14; within:19; endswith; fast_pattern;
    http.request_body;
    content:"|7b 22 64 65 74 61 69 6c 22 3a 22|"; startswith;
    http.header_names;
    content:!"User-Agent|0d 0a|";
    content:!"Referer|0d 0a|";
    reference:md5,4e1201ac8cc7685d147170f9140e5ac7;
    reference:md5,c6ca1afa0f6e7eea5fedf70d1e95c01e;
    reference:url,www.sentinelone.com/labs/wip26-espionage-threat-actors-abuse-cloud-infrastructure-in-targeted-telco-attacks/;
    classtype:trojan-activity;
    sid:2046168; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_06_08, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_08;
    target:src_ip;
)

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