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;)