ET MALWARE LedgerCheck User-Agent Observed

Query · suricata

flow:established,to_server;
http.user_agent; bsize:17;
content:"LedgerChecker/"; fast_pattern; startswith;
target:src_ip;
Raw source ET MALWARE LedgerCheck User-Agent Observed · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE LedgerCheck User-Agent Observed";
    flow:established,to_server;
    http.user_agent; bsize:17;
    content:"LedgerChecker/"; fast_pattern; startswith;
    reference:md5,ca0693ded4c217d6ea04f8498a69ca78;
    reference:url,x.com/suyog41/status/2046121143292293330;
    classtype:trojan-activity;
    sid:2069190; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state TLSDecrypt, created_at 2026_05_06, deployment Perimeter, deployment SSLDecrypt, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_06, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system;
    target:src_ip;
)

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