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Certificate Anomaly

Medium Resolved
ALR-00385 · 2026-10-09T23:13:27Z

Description

TLS certificate anomaly detected on WS-LAP-010. Self-signed certificate on port 443 does not match expected corporate CA chain.

Alert Metadata

Alert ID
ALR-00385
Timestamp
2026-10-09T23:13:27Z
Severity
Medium
Status
Resolved
Detection Source
EmilyAI Triage
Assigned Analyst
Sarah Chen

Endpoint Information

Hostname
WS-LAP-010
User Account
c.williams
Source IP
185.127.220.123
Destination IP
10.3.252.46
Origin Country
DE Germany

MITRE ATT&CK Mapping

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

Investigation Timeline

23:13:27 Event ingested by SOC365 Engine
23:13:32 EmilyAI triage started — correlation enrichment
23:13:36 EmilyAI confidence: 86% — escalated to human analyst
23:13:55 Alert assigned to analyst: Sarah Chen
23:16:02 Investigation started — querying SIEM and threat intelligence
23:18:01 Containment action taken — endpoint isolated
23:24:45 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00169 14h ago Suspicious PowerShell Execution Medium Open WS-LAP-010
ALR-00048 14h ago Certificate Anomaly High Open WS-LAP-011
ALR-00195 15h ago Malware Signature Match Low Open WS-LAP-010
ALR-00419 22h ago Unusual Outbound Traffic Medium Resolved WS-LAP-010
ALR-00334 1d ago Certificate Anomaly Medium Resolved SRV-FILE-01