ET MALWARE Harvester Group Downloader Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api/Values_V2/Getting3210"; bsize:26; fast_pattern;
http.host;
content:".azurewebsites.net"; endswith;
http.header_names;
content:"|0d 0a|MC|0d 0a|Ath|0d 0a|Host|0d 0a 0d 0a|";
content:!"Referer";
Raw source ET MALWARE Harvester Group Downloader Activity (GET) · 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 Harvester Group Downloader Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/Values_V2/Getting3210"; bsize:26; fast_pattern;
    http.host;
    content:".azurewebsites.net"; endswith;
    http.header_names;
    content:"|0d 0a|MC|0d 0a|Ath|0d 0a|Host|0d 0a 0d 0a|";
    content:!"Referer";
    reference:url,symantec-enterprise-blogs.security.com/blogs/threat-intelligence/harvester-new-apt-attacks-asia;
    reference:md5,2578bf48da48c262e4a83e2a9ae47c68;
    classtype:trojan-activity;
    sid:2034223; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_10_18, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_18;
)

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