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Ransomware Behaviour Detected

Medium Resolved
ALR-00083 · 2026-04-07T11:48:20Z

Description

File encryption behaviour detected on SRV-DC-01. 142 files renamed with .locked extension in 30 seconds. EmilyAI Triage isolated endpoint.

Alert Metadata

Alert ID
ALR-00083
Timestamp
2026-04-07T11:48:20Z
Severity
Medium
Status
Resolved
Detection Source
EmilyAI Triage
Assigned Analyst
Emma Richardson

Endpoint Information

Hostname
SRV-DC-01
User Account
d.walker
Source IP
103.130.216.124
Destination IP
10.3.63.214
Origin Country
KP North Korea

MITRE ATT&CK Mapping

Tactic
Impact
Technique
T1486
Reference
attack.mitre.org/techniques/T1486

Investigation Timeline

11:48:20 Event ingested by SOC365 Engine
11:48:23 EmilyAI triage started — correlation enrichment
11:48:34 EmilyAI confidence: 95% — escalated to human analyst
11:49:01 Alert assigned to analyst: Emma Richardson
11:50:09 Investigation started — querying SIEM and threat intelligence
11:53:23 Containment action taken — endpoint isolated
12:03:46 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00479 4h ago Ransomware Behaviour Detected High Investigating WS-LAP-011
ALR-00429 9h ago Ransomware Behaviour Detected Medium Resolved SRV-FILE-01
ALR-00341 15h ago Unusual Outbound Traffic Critical Open SRV-DC-01
ALR-00344 19h ago Ransomware Behaviour Detected Medium Open WS-PC-002
ALR-00275 1d ago Pass-the-Hash Detected Informational Investigating SRV-DC-01