ET MALWARE [eSentire] VBS Retrieving Malicious Payload

Query · suricata

flow:established,to_server;
http.method;
content:"HEAD";
http.uri;
content:".php1"; endswith; fast_pattern;
pcre:"/\/[0-9]{10}.php1$/";
http.user_agent;
content:"Microsoft BITS/";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE [eSentire] VBS Retrieving Malicious Payload · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE [eSentire] VBS Retrieving Malicious Payload";
    flow:established,to_server;
    http.method;
    content:"HEAD";
    http.uri;
    content:".php1"; endswith; fast_pattern;
    pcre:"/\/[0-9]{10}.php1$/";
    http.user_agent;
    content:"Microsoft BITS/";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,aa56a1de9b91446c66d53f12f797bef5;
    classtype:trojan-activity;
    sid:2025626; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_06_25, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16;
)

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