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Rogue DHCP Server

Low False Positive
ALR-00048 · 2026-10-11T22:26:59Z

Description

Rogue DHCP server detected on VLAN 10 from SRV-MAIL-01. Offering IPs in unexpected range. Endpoint Agent quarantined the device.

Alert Metadata

Alert ID
ALR-00048
Timestamp
2026-10-11T22:26:59Z
Severity
Low
Status
False Positive
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-MAIL-01
User Account
f.hall
Source IP
103.154.216.188
Destination IP
10.2.216.206
Origin Country
US United States

MITRE ATT&CK Mapping

Tactic
Discovery
Technique
T1557.003
Reference
attack.mitre.org/techniques/T1557.003

Investigation Timeline

22:26:59 Event ingested by SOC365 Engine
22:27:01 EmilyAI triage started — correlation enrichment
22:27:08 EmilyAI confidence: 95% — escalated to human analyst
22:27:28 Alert assigned to analyst: EmilyAI (auto)
22:29:50 Investigation started — querying SIEM and threat intelligence
22:35:06 Containment action taken — endpoint isolated
22:44:49 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00025 2h ago Rogue DHCP Server Medium Open WS-PC-006
ALR-00145 3h ago Rogue DHCP Server Low False Positive SRV-WEB-01
ALR-00499 6h ago Port Scan Detected Medium Resolved SRV-MAIL-01
ALR-00449 8h ago Rogue DHCP Server Critical Escalated WS-PC-003
ALR-00412 9h ago Port Scan Detected Low Escalated SRV-MAIL-01