ET MALWARE Agent Tesla CnC Exfil via TCP

Query · suricata

flow:established,to_server;
content:"Time|3a 20|"; startswith;
content:"|3c|br|3e|User|20|Name|3a 20|"; distance:19; within:15;
content:"|3c|br|3e|Computer|20|Name|3a 20|"; distance:0;
content:"|3c|br|3e|OSFullName|3a 20|"; distance:0; fast_pattern;
content:"|3c|br|3e|Password|3a 20|";
content:"|3c|br|3e 3c|hr|3e|"; endswith;
target:src_ip;
Raw source ET MALWARE Agent Tesla CnC Exfil via TCP · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Agent Tesla CnC Exfil via TCP";
    flow:established,to_server;
    content:"Time|3a 20|"; startswith;
    content:"|3c|br|3e|User|20|Name|3a 20|"; distance:19; within:15;
    content:"|3c|br|3e|Computer|20|Name|3a 20|"; distance:0;
    content:"|3c|br|3e|OSFullName|3a 20|"; distance:0; fast_pattern;
    content:"|3c|br|3e|Password|3a 20|";
    content:"|3c|br|3e 3c|hr|3e|"; endswith;
    reference:md5,f1b1fdd112b02733cd8e5d8ed62acec1;
    classtype:trojan-activity;
    sid:2063399; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_07_10, deployment Perimeter, malware_family AgentTesla, confidence High, signature_severity Critical, updated_at 2025_07_10;
    target:src_ip;
)

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