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Ransomware Behaviour Detected

Informational False Positive
ALR-00483 · 2026-10-10T12:45:00Z

Description

File encryption behaviour detected on WS-MAC-005. 142 files renamed with .locked extension in 30 seconds. Network IDS isolated endpoint.

Alert Metadata

Alert ID
ALR-00483
Timestamp
2026-10-10T12:45:00Z
Severity
Informational
Status
False Positive
Detection Source
Network IDS
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
WS-MAC-005
User Account
a.wilson
Source IP
45.5.148.99
Destination IP
10.1.15.1
Origin Country
KP North Korea

MITRE ATT&CK Mapping

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

Investigation Timeline

12:45:00 Event ingested by SOC365 Engine
12:45:05 EmilyAI triage started — correlation enrichment
12:45:15 EmilyAI confidence: 91% — escalated to human analyst
12:45:41 Alert assigned to analyst: EmilyAI (auto)
12:46:29 Investigation started — querying SIEM and threat intelligence
12:53:24 Containment action taken — endpoint isolated
13:02:30 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00427 2h ago Pass-the-Hash Detected Informational Investigating WS-MAC-005
ALR-00291 2h ago Malware Signature Match Low Investigating WS-MAC-005
ALR-00493 3h ago Kerberoasting Attempt High Investigating WS-MAC-005
ALR-00074 5h ago Ransomware Behaviour Detected Critical Escalated VM-DEV-01
ALR-00423 6h ago Unusual Outbound Traffic Informational False Positive WS-MAC-005