Méthode
—
Port
25
Chemin / cible
—
Service
SMTP
Payload
EHLO example.com
Pourquoi cette classification : Type « smtp_probe » (signaux protocolaires) · confiance 100%
Confiance classification
100%
Risque capteur
Moyen
· 50
Confiance : Confiance 100 % — Motif catalogue confirmé
Protocole émulé
1
Signaux
pat-0401
pat-0629
Upstream
Technique MITRE
TA0007
Tactiques MITRE
TA0007
TA0001
Motifs de détection (base)
SMTP EHLO
SMTPS EHLO
User-Agent
—
Règles WAF
—
Payload (extrait)
EHLO example.com
Meta JSON brut
{
"protocol_emulated": true,
"emulator_response": "323230206d61696c2e6578616d706c652e636f6d2045534d545020506f737466697820285562756e7475290d0a3235302d6d61696c2e6578616d706c652e636f6d0d0a3235302d53495a452035323432383830300d0a3235302048454c500d0a",
"emulator_response_len": 96,
"smtp_helo_hash": "0caaf24ab1a0c33440c06afe99df986365b0781f",
"bytes_in": 18,
"payload_entropy": 3.94770277922009,
"port_category": "well_known",
"org": "Google LLC",
"service": "smtp",
"app_proto": "smtp",
"asn": 396982,
"country": "BE",
"dst_port": 25,
"risk_waf": 8,
"risk_classification": 47,
"risk_behavior": 0,
"risk_geo": 40,
"risk_protocol": 30,
"risk_novelty": 0,
"risk_boost": 0,
"risk_granularity": 5,
"risk_breakdown": {
"waf": 8,
"classification": 47,
"behavior": 0,
"geo": 40,
"protocol": 30,
"novelty": 0
},
"risk_score": 50,
"tag_count": 3,
"anomaly_count": 0,
"campaign_key": "fd952417e2c1da4d499e9743f0944fe37efe09d7",
"event_fingerprint": "3d09fc52d69030bda96b86438d4460cfb5a981fd",
"classification_reason": "Type \u00ab smtp_probe \u00bb (signaux protocolaires) \u00b7 confiance 100%",
"confidence": 1,
"classification_confidence": 1,
"precision_score": 129,
"precision_signals": [
"pat-0401",
"pat-0629",
"INT-upstream"
],
"kb_rule_ids": [
"pat-0401",
"pat-0629",
"INT-upstream"
],
"matched_patterns": [
"pat-0401",
"pat-0629"
],
"matched_pattern_names": [
"SMTP EHLO",
"SMTPS EHLO"
],
"pattern_ids": [
"pat-0401",
"pat-0629"
],
"confidence_breakdown": {
"waf": 8,
"classification": 47,
"behavior": 0,
"geo": 40,
"protocol": 30,
"novelty": 0,
"risk_score": 50
},
"named_classification_skipped": false,
"service_name": "smtp",
"risk_confidence_factor": 100,
"city": null,
"is_datacenter": true,
"is_tor_hint": false,
"geo": {
"country": "BE",
"asn": 396982,
"org": "Google LLC",
"is_datacenter": true,
"is_tor_hint": false
},
"fingerprint": {
"payload_hash": "ed997faa528764840eb2e5b61a9d66c2",
"path_pattern_hash": "0585f924ca84c34a681a0e1500b9f97a"
},
"target_context": {
"dst_port": 25,
"service": "smtp",
"service_name": "smtp",
"risk_score": 50
},
"payload_preview": "EHLO example.com\r\n",
"request_sample": "EHLO example.com\r\n",
"payload_snippet": "EHLO example.com",
"evidence": {
"request_sample": "EHLO example.com\r\n",
"payload_snippet": "EHLO example.com",
"classification_reason": "Type \u00ab smtp_probe \u00bb (signaux protocolaires) \u00b7 confiance 100%"
},
"attack_stage": "probe",
"mitre_tactics": [
"TA0007",
"TA0001"
],
"mitre": "TA0007",
"threat_family": [
"scanner"
],
"recommended_client_action": "investigate",
"policy_mode": "intelligence",
"sensor_role": "threat_intelligence",
"event_signature": "58273ff9b985af04e61dac98125c4bb2f87f18f3",
"protocol_details": {
"smtp_auth_fr": "Sonde protocole SMTP",
"payload_preview": "EHLO example.com",
"port": 25,
"service": "smtp",
"service_label_fr": "SMTP"
},
"evidence_snippet": "EHLO example.com",
"attack_vector": "smtp probe \u00b7 via SMTP:25 \u00b7 (sonde \/ probe)",
"target_port_label": "25 \u00b7 SMTP",
"emulator_service": "smtp",
"confidence_reason": "Confiance 100 % \u2014 Motif catalogue confirm\u00e9",
"site_display": {
"classification": null,
"classification_reason": "Type \u00ab smtp_probe \u00bb (signaux protocolaires) \u00b7 confiance 100%",
"classification_reason_label_fr": "Type \u00ab smtp_probe \u00bb (signaux protocolaires) \u00b7 confiance 100%",
"executive_one_liner_fr": "Activit\u00e9 suspecte \u2014 risque 50\/100 (Moyen) \u2014 MITRE TA0007 \u2014 confiance 100 % \u2014 via SMTP",
"confidence_pct": 100,
"confidence_breakdown": {
"waf": 8,
"classification": 47,
"behavior": 0,
"geo": 40,
"protocol": 30,
"novelty": 0,
"risk_score": 50
},
"attack_stage": "probe",
"attack_stage_label": "Sonde \/ probe",
"attack_chain_stage": "discovery",
"attack_chain_stage_label_fr": "D\u00e9couverte",
"risk_score": 50,
"risk_label": "Moyen",
"service_name": "smtp",
"service_label_fr": "SMTP",
"dst_port": 25,
"protocol_emulated": true,
"tags_summary": [
"pat-0401",
"pat-0629",
"INT-upstream"
],
"tags_summary_labels_fr": [
"pat-0401",
"pat-0629",
"Upstream"
],
"recommended_action": "investigate",
"recommended_action_label": "Investiguer",
"mitre": "TA0007",
"mitre_technique": "TA0007",
"persona_hostname": "mail.sensor-1.internal",
"persona_service_banner": "Postfix ESMTP",
"correlation_flags": null,
"correlation_flags_labels_fr": null,
"sensor_role": "threat_intelligence",
"sensor_role_label_fr": "Renseignement menaces",
"confidence_hint_fr": null,
"protocol_details": {
"smtp_auth_fr": "Sonde protocole SMTP",
"payload_preview": "EHLO example.com",
"port": 25,
"service": "smtp",
"service_label_fr": "SMTP"
},
"attack_vector": "smtp probe \u00b7 via SMTP:25 \u00b7 (sonde \/ probe)",
"evidence_snippet": "EHLO example.com",
"target_port_label": "25 \u00b7 SMTP",
"emulator_service": "smtp",
"confidence_reason": "Confiance 100 % \u2014 Motif catalogue confirm\u00e9",
"confidence_factors_fr": "Confiance 100 % \u2014 Score WAF 8",
"campaign_hint_fr": null,
"attack_phases_timeline_fr": [
{
"key": "recon",
"label_fr": "Reconnaissance",
"active": false,
"kind": "stage"
},
{
"key": "probe",
"label_fr": "Sonde \/ probe",
"active": true,
"kind": "stage"
},
{
"key": "exploit_attempt",
"label_fr": "Tentative d'exploit",
"active": false,
"kind": "stage"
},
{
"key": "post_exploit",
"label_fr": "Post-exploitation",
"active": false,
"kind": "stage"
},
{
"key": "c2",
"label_fr": "Commande & contr\u00f4le",
"active": false,
"kind": "stage"
},
{
"key": "discovery",
"label_fr": "D\u00e9couverte",
"active": true,
"kind": "chain",
"hint_fr": null
}
]
},
"honeypot_persona": {
"sensor_id": "sensor-1",
"hostname": "mail.sensor-1.internal",
"mail_host": "mail.sensor-1.internal",
"ldap_dc": "dc.sensor-1.internal",
"k8s_cluster": "hp-sensor-1",
"domain": "sensor-1.internal",
"service_role": "mail",
"service_banner": "Postfix ESMTP",
"service_os": "linux",
"dst_port": "25"
},
"hostname": "mail.sensor-1.internal",
"sensor_id": "sensor-1",
"attack_chain_stage": "discovery",
"ban_policy": "advisory_investigate",
"tags_list": [
"net_smtp_probe",
"smtp_emulated",
"smtp_enumeration"
],
"asn_dc_heuristic": true,
"behavior_alert_count": 1,
"behavior_priority": 72
}
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