alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Hello2Malware (H2MLoader) get_base64 Payload Retrieval Attempt"; dsize:45; flow:established,to_server; content:"get_base64|3a|"; fast_pattern; startswith; pcre:"/^[A-F0-9]{32}\r\n$/R"; reference:md5,e1c4b64bec6fff2a0eb12eba67a24efa; classtype:trojan-activity; sid:2051680; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_18, deployment Perimeter, malware_family Hello2Malware, performance_impact Low, confidence High, signature_severity Major, tag Loader, tag Hello2Malware, updated_at 2024_03_18; target:src_ip;)