alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SockRacket/KANDYKORN Client Connect (Random Number)"; flow:established,to_server; stream_size:server,<,10; dsize:4; content:"|d8 d1 d3 0e|"; reference:url,elastic.co/security-labs/elastic-catches-dprk-passing-out-kandykorn; classtype:trojan-activity; sid:2049034; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_01, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_01, reviewed_at 2023_11_01;)