ET JA3 Hash - Suspected Cobalt Strike Malleable C2 M1 (set)

Query · suricata

flow:established,to_server;
ja3.hash;
content:"eb88d0b3e1961a0562f006e5ce2a0b87";
ja3.string;
content:"771,49192-49191-49172-49171";
flowbits:set,ET.cobaltstrike.ja3;
flowbits:noalert;

Rule dependencies

Feeds into

  • 4 rules read ET.cobaltstrike.ja3 · view all
Raw source ET JA3 Hash - Suspected Cobalt Strike Malleable C2 M1 (set) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET JA3 Hash - Suspected Cobalt Strike Malleable C2 M1 (set)";
    flow:established,to_server;
    ja3.hash;
    content:"eb88d0b3e1961a0562f006e5ce2a0b87";
    ja3.string;
    content:"771,49192-49191-49172-49171";
    flowbits:set,ET.cobaltstrike.ja3;
    flowbits:noalert;
    classtype:command-and-control;
    sid:2028831; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_10_15, deployment Perimeter, malware_family Cobalt_Strike, confidence Low, signature_severity Major, updated_at 2019_10_15, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)

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