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Rogue DHCP Server

Informational Open
ALR-00126 · 2026-05-21T22:33:38Z

Description

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

Alert Metadata

Alert ID
ALR-00126
Timestamp
2026-05-21T22:33:38Z
Severity
Informational
Status
Open
Detection Source
Firewall
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-APP-01
User Account
p.thomas
Source IP
91.77.195.114
Destination IP
10.2.208.210
Origin Country
KP North Korea

MITRE ATT&CK Mapping

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

Investigation Timeline

22:33:38 Event ingested by SOC365 Engine
22:33:40 EmilyAI triage started — correlation enrichment
22:33:49 EmilyAI confidence: 79% — escalated to human analyst
22:33:56 Alert assigned to analyst: EmilyAI (auto)
22:35:07 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00200 4h ago Rogue DHCP Server Informational False Positive SRV-FILE-01
ALR-00371 5h ago Rogue DHCP Server Low False Positive SW-CORE-01
ALR-00025 7h ago Rogue DHCP Server Medium False Positive WS-LAP-011
ALR-00164 7h ago Rogue DHCP Server High Investigating SRV-MAIL-01
ALR-00263 12h ago Malware Signature Match Medium False Positive SRV-APP-01