ET MALWARE GorillaBot CnC Magic-Byte Response (Bot Configuration)

Query · suricata

flow:established,to_client;
flowbits:isset,ET.GorillaBot.Probe;
flowbits:set,ET.GorillaBot.Config;
dsize:4;
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Feeds into

  • 1 rule read ET.GorillaBot.Config · view all
Raw source ET MALWARE GorillaBot CnC Magic-Byte Response (Bot Configuration) · 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 $EXTERNAL_NET 38242 -> $HOME_NET any (
    msg:"ET MALWARE GorillaBot CnC Magic-Byte Response (Bot Configuration)";
    flow:established,to_client;
    flowbits:isset,ET.GorillaBot.Probe;
    flowbits:set,ET.GorillaBot.Config;
    dsize:4;
    reference:url,any.run/cybersecurity-blog/gorillabot-malware-analysis/;
    classtype:command-and-control;
    sid:2062887; rev:1;
    metadata:affected_product Linux, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_06_11, deployment Perimeter, malware_family Gorillabot, confidence Low, signature_severity Major, updated_at 2025_06_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1095, mitre_technique_name Non_Application_Layer_Protocol;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.