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Certificate Anomaly

High Investigating
ALR-00245 · 2026-10-07T20:04:05Z

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-00245
Timestamp
2026-10-07T20:04:05Z
Severity
High
Status
Investigating
Detection Source
SOC365 Engine
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
VM-DEV-01
User Account
a.wilson
Source IP
45.198.148.35
Destination IP
10.2.35.122
Origin Country
FR France

MITRE ATT&CK Mapping

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

Investigation Timeline

20:04:05 Event ingested by SOC365 Engine
20:04:10 EmilyAI triage started — correlation enrichment
20:04:20 EmilyAI confidence: 79% — escalated to human analyst
20:04:24 Alert assigned to analyst: Sarah Chen
20:06:12 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00367 9h ago Certificate Anomaly Medium False Positive SRV-DC-01
ALR-00098 10h ago Certificate Anomaly High Investigating WS-PC-006
ALR-00270 13h ago Credential Stuffing Attempt Medium False Positive VM-DEV-01
ALR-00269 14h ago Certificate Anomaly Medium Investigating VM-DEV-01
ALR-00286 16h ago Lateral Movement Detected Medium Escalated VM-DEV-01