ET MALWARE Sidecopy APT Backdoor Related Activity (POST)

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /logs_files HTTP/1.1"; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:46;
Raw source ET MALWARE Sidecopy APT Backdoor Related Activity (POST) · 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 Sidecopy APT Backdoor Related Activity (POST)";
    flow:established,to_server;
    http.request_line;
    content:"POST /logs_files HTTP/1.1"; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:46;
    reference:md5,bc8e094a4fb6c724e6b32a00df6262f9;
    reference:url,twitter.com/bofheaded/status/1505928947955302401;
    classtype:trojan-activity;
    sid:2035558; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_03_22, deployment Perimeter, deployment SSLDecrypt, malware_family SideCopy, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_22;
)

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