ET MOBILE_MALWARE iOS/Xsser checking library version

Query · suricata

flow:to_server,established;
urilen:18;
http.method;
content:"GET"; nocase;
http.uri;
content:"/CheckLibrary.aspx";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MOBILE_MALWARE iOS/Xsser checking library version · 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 MOBILE_MALWARE iOS/Xsser checking library version";
    flow:to_server,established;
    urilen:18;
    http.method;
    content:"GET"; nocase;
    http.uri;
    content:"/CheckLibrary.aspx";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,2cba795aff750259a2fc447cdd6ea1c7;
    reference:url,lacoon.com/lacoon-discovers-xsser-mrat-first-advanced-ios-trojan/;
    classtype:trojan-activity;
    sid:2019334; rev:3;
    metadata:attack_target Mobile_Client, created_at 2014_10_01, signature_severity Major, updated_at 2020_05_12, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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