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Certificate Anomaly

High Investigating
ALR-00305 · 2026-04-10T05:29:43Z

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-00305
Timestamp
2026-04-10T05:29:43Z
Severity
High
Status
Investigating
Detection Source
Attack Surface Scanner
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
VM-DEV-01
User Account
e.evans
Source IP
45.157.148.55
Destination IP
10.3.229.83
Origin Country
UA Ukraine

MITRE ATT&CK Mapping

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

Investigation Timeline

05:29:43 Event ingested by SOC365 Engine
05:29:45 EmilyAI triage started — correlation enrichment
05:29:49 EmilyAI confidence: 90% — escalated to human analyst
05:29:59 Alert assigned to analyst: Emma Richardson
05:31:14 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00006 43m ago Certificate Anomaly Low Investigating SRV-MAIL-01
ALR-00472 3h ago Privilege Escalation Attempt Low Investigating VM-DEV-01
ALR-00164 5h ago Certificate Anomaly Medium False Positive SRV-SQL-01
ALR-00147 8h ago Certificate Anomaly Medium False Positive SRV-WEB-01
ALR-00420 10h ago Certificate Anomaly High Open WS-PC-004