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Certificate Anomaly

Medium Investigating
ALR-00249 · 2026-07-08T01:04:58Z

Description

TLS certificate anomaly detected on SRV-BACKUP-01. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00249
Timestamp
2026-07-08T01:04:58Z
Severity
Medium
Status
Investigating
Detection Source
Firewall
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
SRV-BACKUP-01
User Account
p.thomas
Source IP
45.4.148.125
Destination IP
10.1.122.239
Origin Country
KP North Korea

MITRE ATT&CK Mapping

Tactic
Defence Evasion
Technique
T1553.004
Reference
attack.mitre.org/techniques/T1553.004

Investigation Timeline

01:04:58 Event ingested by SOC365 Engine
01:05:02 EmilyAI triage started — correlation enrichment
01:05:07 EmilyAI confidence: 84% — escalated to human analyst
01:05:27 Alert assigned to analyst: Marcus Webb
01:05:51 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00481 4h ago Anomalous DNS Query High Investigating SRV-BACKUP-01
ALR-00360 20h ago DecoyPulse Honeypot Triggered Low Resolved SRV-BACKUP-01
ALR-00259 23h ago Shadow IT Discovery Medium Escalated SRV-BACKUP-01
ALR-00167 1d ago Certificate Anomaly Low Escalated SRV-BACKUP-01
ALR-00304 1d ago Certificate Anomaly Informational Escalated AP-WIFI-03