ET MALWARE Kimsuky Related Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/?m="; fast_pattern; offset:4;
pcre:"/^[a-z]{1}/R";
content:"&p1="; distance:0;
content:"&p2="; distance:0;
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:53;
http.content_len;
byte_test:0,=,0,0,string,dec;
Raw source ET MALWARE Kimsuky Related Activity (POST) · 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 Kimsuky Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/?m="; fast_pattern; offset:4;
    pcre:"/^[a-z]{1}/R";
    content:"&p1="; distance:0;
    content:"&p2="; distance:0;
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:53;
    http.content_len;
    byte_test:0,=,0,0,string,dec;
    reference:md5,739d14336826d078c40c9580e3396d15;
    reference:url,twitter.com/Timele9527/status/1407610627011403779;
    classtype:trojan-activity;
    sid:2033199; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_28, deployment Perimeter, malware_family Kimsuky, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_28;
)

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