ET MALWARE HTran/SensLiceld.A response to infected host - Inbound Connection Attempt

Query · suricata

flow:established,to_client;
dsize:<80;
content:"|5b|SERVER|5d|connection|20|to|20|"; startswith;
Raw source ET MALWARE HTran/SensLiceld.A response to infected host - Inbound Connection 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 HTran/SensLiceld.A response to infected host - Inbound Connection Attempt";
    flow:established,to_client;
    dsize:<80;
    content:"|5b|SERVER|5d|connection|20|to|20|"; startswith;
    reference:url,www.secureworks.com/research/threats/htran/;
    reference:url,www.symantec.com/connect/blogs/truth-behind-shady-rat;
    reference:url,www.symantec.com/security_response/writeup.jsp?docid=2010-120716-4344-99&tabid=2;
    reference:url,www.securelist.com/en/descriptions/10120120/Trojan-Spy.Win32.Agent.bptu;
    classtype:trojan-activity;
    sid:2013361; rev:7;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Linux, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2011_08_05, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag HTRAN, updated_at 2025_02_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1090, mitre_technique_name Proxy;
)

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