ET MOBILE_MALWARE Kimsuky AppleSeed CnC Checkin M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php?m="; fast_pattern;
content:"&p1="; distance:1; within:4;
pcre:"/\.php\?m=[abcdefgh]&p1=[a-f0-9]{16}$/";
http.user_agent;
content:"Android";
http.content_len;
content:"0"; bsize:1;
http.header_names;
content:!"Referer";
Raw source ET MOBILE_MALWARE Kimsuky AppleSeed CnC Checkin M2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MOBILE_MALWARE Kimsuky AppleSeed CnC Checkin M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php?m="; fast_pattern;
    content:"&p1="; distance:1; within:4;
    pcre:"/\.php\?m=[abcdefgh]&p1=[a-f0-9]{16}$/";
    http.user_agent;
    content:"Android";
    http.content_len;
    content:"0"; bsize:1;
    http.header_names;
    content:!"Referer";
    reference:url,twitter.com/AhnLab_SecuInfo/status/1460101266760089600;
    reference:md5,e7caf25de7ce463a6f22ecb8689389ad;
    classtype:trojan-activity;
    sid:2034512; rev:1;
    metadata:attack_target Mobile_Client, created_at 2021_11_18, deployment Perimeter, malware_family Kimsuky, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_18, reviewed_at 2023_08_22, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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