ET MALWARE Hello2Malware (H2MLoader) get_base64 Payload Retrieval Attempt

Query · suricata

dsize:45;
flow:established,to_server;
content:"get_base64|3a|"; fast_pattern; startswith;
pcre:"/^[A-F0-9]{32}\r\n$/R";
target:src_ip;
Raw source ET MALWARE Hello2Malware (H2MLoader) get_base64 Payload Retrieval Attempt · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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