ET MALWARE Win32/SVCReady Loader CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php?zs="; fast_pattern;
content:"&t=";
isdataat:!2,relative;
pcre:"/\.php\?zs=[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}&t=[0-9]{1,2}$/Usi";
http.header_names;
content:!"Referer";
content:!"Accept-";
Raw source ET MALWARE Win32/SVCReady Loader CnC Activity · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/SVCReady Loader CnC Activity";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?zs="; fast_pattern;
    content:"&t=";
    isdataat:!2,relative;
    pcre:"/\.php\?zs=[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}&t=[0-9]{1,2}$/Usi";
    http.header_names;
    content:!"Referer";
    content:!"Accept-";
    reference:md5,e4430c33d343d9f4af57225b90600a3d;
    reference:md5,1036e57d1c8cde25a6680430354aa801;
    classtype:trojan-activity;
    sid:2036856; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_27, deployment Perimeter, malware_family SVCReady, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_27, reviewed_at 2024_03_08;
)

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