ET MALWARE Win32/X-Files Stealer Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.header_names;
content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:60;
http.content_len;
byte_test:0,>,90000,0,string,dec;
http.request_body;
content:"zipx="; startswith; fast_pattern;
Raw source ET MALWARE Win32/X-Files Stealer Activity · 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 Win32/X-Files Stealer Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; bsize:60;
    http.content_len;
    byte_test:0,>,90000,0,string,dec;
    http.request_body;
    content:"zipx="; startswith; fast_pattern;
    reference:md5,43379d3c3faf5d7e37df398de90ee58b;
    reference:url,twitter.com/h2jazi/status/1476292943027871755;
    reference:url,twitter.com/3xp0rtblog/status/1473323635469438978;
    classtype:trojan-activity;
    sid:2034848; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_12_30, deployment Perimeter, malware_family X_Files, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_30;
)

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