ET MALWARE EARTHWORM SOCKS Proxy Tunnel Post Setup Request

Query · suricata

flow:established,to_client;
flowbits:isset,ET.earthworm.request.stage2;
dsize:4;
content:"|05 02 00 01|"; fast_pattern;

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

Raw source ET MALWARE EARTHWORM SOCKS Proxy Tunnel Post Setup Request · 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 any any -> any any (
#    msg:"ET MALWARE EARTHWORM SOCKS Proxy Tunnel Post Setup Request";
#    flow:established,to_client;
#    flowbits:isset,ET.earthworm.request.stage2;
#    dsize:4;
#    content:"|05 02 00 01|"; fast_pattern;
#    reference:url,community.emergingthreats.net/t/sig-earthworm-reverse-socks-handshake-and-tunnel-sequence-detection/3314;
#    classtype:trojan-activity;
#    sid:2069307; rev:1;
#    metadata:affected_product Any, attack_target Client_and_Server, tls_state plaintext, created_at 2026_05_14, deployment Perimeter, deployment Internal, malware_family EarthWorm, performance_impact Significant, confidence High, signature_severity Major, tag SOCKS_Reverse_Proxy, updated_at 2026_05_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1090, mitre_technique_name Proxy;
#)

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.