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Rogue DHCP Server

Medium Open
ALR-00267 · 2026-10-05T09:12:43Z

Description

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

Alert Metadata

Alert ID
ALR-00267
Timestamp
2026-10-05T09:12:43Z
Severity
Medium
Status
Open
Detection Source
DecoyPulse
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
SRV-FILE-01
User Account
j.smith
Source IP
103.89.216.31
Destination IP
10.1.238.228
Origin Country
RO Romania

MITRE ATT&CK Mapping

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

Investigation Timeline

09:12:43 Event ingested by SOC365 Engine
09:12:48 EmilyAI triage started — correlation enrichment
09:12:55 EmilyAI confidence: 84% — escalated to human analyst
09:13:04 Alert assigned to analyst: Sarah Chen
09:15:14 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00064 4h ago Brute Force SSH High Open SRV-FILE-01
ALR-00395 16h ago Credential Stuffing Attempt Informational False Positive SRV-FILE-01
ALR-00436 18h ago Rogue DHCP Server Medium Open WS-LAP-012
ALR-00200 1d ago Rogue DHCP Server Low Escalated WS-LAP-010
ALR-00233 1d ago Kerberoasting Attempt Low Open SRV-FILE-01