ET HUNTING Possible Kimsuky Related Malicious VBScript Inbound

alert ftp-data $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET HUNTING Possible Kimsuky Related Malicious VBScript Inbound";
    flow:established,to_client;
    content:"CreateObject(|22|WScript.Shell|22|)";
    content:"reg add"; nocase; fast_pattern;
    content:"ftp://"; distance:0; within:200;
    pcre:"/[a-z]{8}.[a-z]{3}/Ri";
    reference:url,github.com/eset/malware-ioc/tree/master/kimsuky/hotdoge_donutcat_case;
    classtype:trojan-activity;
    sid:2034695; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_12_13;
)