ET MALWARE Win32/Backdoor Sending Task Status (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/?id="; startswith;
http.header_names;
content:!"Referer|0d 0a|";
http.request_body;
content:"UFVUVEFTSyUlJ"; startswith; fast_pattern;
Raw source ET MALWARE Win32/Backdoor Sending Task Status (POST) · 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/Backdoor Sending Task Status (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/?id="; startswith;
    http.header_names;
    content:!"Referer|0d 0a|";
    http.request_body;
    content:"UFVUVEFTSyUlJ"; startswith; fast_pattern;
    reference:md5,341610a5a0cc430f99f9f9bd694b04a9;
    classtype:command-and-control;
    sid:2035643; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2022_03_29, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Backdoor, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_30;
)

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