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Certificate Anomaly

High Escalated
ALR-00137 · 2026-04-07T19:32:13Z

Description

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

Alert Metadata

Alert ID
ALR-00137
Timestamp
2026-04-07T19:32:13Z
Severity
High
Status
Escalated
Detection Source
EmilyAI Triage
Assigned Analyst
James Okonkwo

Endpoint Information

Hostname
VM-DEV-01
User Account
e.evans
Source IP
91.234.195.199
Destination IP
10.1.5.39
Origin Country
BR Brazil

MITRE ATT&CK Mapping

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

Investigation Timeline

19:32:13 Event ingested by SOC365 Engine
19:32:14 EmilyAI triage started — correlation enrichment
19:32:25 EmilyAI confidence: 98% — escalated to human analyst
19:32:40 Alert assigned to analyst: James Okonkwo
19:33:49 Investigation started — querying SIEM and threat intelligence
19:36:41 Containment action taken — endpoint isolated
19:46:57 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00082 6h ago Certificate Anomaly Medium Escalated WS-PC-004
ALR-00329 6h ago Unusual Outbound Traffic Critical Investigating VM-DEV-01
ALR-00086 11h ago Anomalous DNS Query High Escalated VM-DEV-01
ALR-00363 14h ago Port Scan Detected Low False Positive VM-DEV-01
ALR-00499 19h ago Phishing Email Blocked High Investigating VM-DEV-01