ET ADWARE_PUP SimpleHelp Remote Access Software Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"-version.txt?time="; fast_pattern;
http.user_agent;
content:"JWrapperDownloader"; bsize:18;
http.header_names;
content:!"Referer";
target:src_ip;
Raw source ET ADWARE_PUP SimpleHelp Remote Access Software 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 ADWARE_PUP SimpleHelp Remote Access Software Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"-version.txt?time="; fast_pattern;
    http.user_agent;
    content:"JWrapperDownloader"; bsize:18;
    http.header_names;
    content:!"Referer";
    reference:url,www.deepinstinct.com/blog/muddywater-en-able-spear-phishing-with-new-ttps;
    classtype:pup-activity;
    sid:2049863; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_12_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_28;
    target:src_ip;
)

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