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Rogue DHCP Server

Informational Resolved
ALR-00431 · 2026-04-08T13:40:05Z

Description

Rogue DHCP server detected on VLAN 10 from VM-DEV-01. Offering IPs in unexpected range. Attack Surface Scanner quarantined the device.

Alert Metadata

Alert ID
ALR-00431
Timestamp
2026-04-08T13:40:05Z
Severity
Informational
Status
Resolved
Detection Source
Attack Surface Scanner
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
VM-DEV-01
User Account
h.roberts
Source IP
91.67.195.150
Destination IP
10.3.228.220
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

13:40:05 Event ingested by SOC365 Engine
13:40:09 EmilyAI triage started — correlation enrichment
13:40:15 EmilyAI confidence: 88% — escalated to human analyst
13:40:25 Alert assigned to analyst: EmilyAI (auto)
13:42:41 Investigation started — querying SIEM and threat intelligence
13:45:46 Containment action taken — endpoint isolated
13:54:59 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00156 46m ago Rogue DHCP Server Low Escalated WS-LAP-012
ALR-00097 2h ago Data Exfiltration Attempt Medium Escalated VM-DEV-01
ALR-00096 13h ago Rogue DHCP Server Low Resolved SRV-FILE-01
ALR-00390 13h ago Rogue DHCP Server Low Investigating SRV-WEB-01
ALR-00277 22h ago Rogue DHCP Server Low Investigating SRV-SQL-01