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Ransomware Behaviour Detected

Medium Escalated
ALR-00239 · 2026-04-11T12:17:14Z

Description

File encryption behaviour detected on SRV-WEB-01. 142 files renamed with .locked extension in 30 seconds. Dark Web Monitor isolated endpoint.

Alert Metadata

Alert ID
ALR-00239
Timestamp
2026-04-11T12:17:14Z
Severity
Medium
Status
Escalated
Detection Source
Dark Web Monitor
Assigned Analyst
James Okonkwo

Endpoint Information

Hostname
SRV-WEB-01
User Account
system
Source IP
185.155.220.205
Destination IP
10.1.240.193
Origin Country
VN Vietnam

MITRE ATT&CK Mapping

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

Investigation Timeline

12:17:14 Event ingested by SOC365 Engine
12:17:17 EmilyAI triage started — correlation enrichment
12:17:24 EmilyAI confidence: 96% — escalated to human analyst
12:17:49 Alert assigned to analyst: James Okonkwo
12:18:41 Investigation started — querying SIEM and threat intelligence
12:23:49 Containment action taken — endpoint isolated
12:36:08 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00243 38m ago Unauthorised USB Device Medium Resolved SRV-WEB-01
ALR-00415 3h ago Ransomware Behaviour Detected Medium Escalated AP-WIFI-03
ALR-00053 3h ago Ransomware Behaviour Detected Medium False Positive SRV-BACKUP-01
ALR-00134 5h ago Ransomware Behaviour Detected Informational Resolved WS-PC-003
ALR-00140 11h ago DecoyPulse Honeypot Triggered Informational Resolved SRV-WEB-01