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Rogue DHCP Server

Medium False Positive
ALR-00333 · 2026-10-08T18:55:43Z

Description

Rogue DHCP server detected on VLAN 10 from WS-PC-002. Offering IPs in unexpected range. Endpoint Agent quarantined the device.

Alert Metadata

Alert ID
ALR-00333
Timestamp
2026-10-08T18:55:43Z
Severity
Medium
Status
False Positive
Detection Source
Endpoint Agent
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
WS-PC-002
User Account
r.davies
Source IP
45.196.148.248
Destination IP
10.0.91.42
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

18:55:43 Event ingested by SOC365 Engine
18:55:46 EmilyAI triage started — correlation enrichment
18:55:54 EmilyAI confidence: 89% — escalated to human analyst
18:56:08 Alert assigned to analyst: Sarah Chen
18:57:18 Investigation started — querying SIEM and threat intelligence
19:05:38 Containment action taken — endpoint isolated
19:15:03 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00354 1h ago Suspicious PowerShell Execution Critical Escalated WS-PC-002
ALR-00431 5h ago Credential Stuffing Attempt Medium Escalated WS-PC-002
ALR-00023 13h ago Data Exfiltration Attempt Low Open WS-PC-002
ALR-00436 18h ago Rogue DHCP Server Medium Open WS-LAP-012
ALR-00166 18h ago DLP Policy Violation Medium Open WS-PC-002