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Ransomware Behaviour Detected

Medium False Positive
ALR-00158 · 2026-07-09T11:04:59Z

Description

File encryption behaviour detected on WS-PC-004. 142 files renamed with .locked extension in 30 seconds. Firewall isolated endpoint.

Alert Metadata

Alert ID
ALR-00158
Timestamp
2026-07-09T11:04:59Z
Severity
Medium
Status
False Positive
Detection Source
Firewall
Assigned Analyst
Anika Patel

Endpoint Information

Hostname
WS-PC-004
User Account
n.clark
Source IP
45.224.148.7
Destination IP
10.1.27.30
Origin Country
CN China

MITRE ATT&CK Mapping

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

Investigation Timeline

11:04:59 Event ingested by SOC365 Engine
11:05:04 EmilyAI triage started — correlation enrichment
11:05:10 EmilyAI confidence: 79% — escalated to human analyst
11:05:18 Alert assigned to analyst: Anika Patel
11:07:06 Investigation started — querying SIEM and threat intelligence
11:08:50 Containment action taken — endpoint isolated
11:19:13 Alert resolved — remediation complete

Related Alerts

ID Time Alert Severity Status Host
ALR-00262 33m ago Certificate Anomaly Low Resolved WS-PC-004
ALR-00287 3h ago Shadow IT Discovery Low Investigating WS-PC-004
ALR-00356 7h ago Anomalous DNS Query Low False Positive WS-PC-004
ALR-00385 12h ago Ransomware Behaviour Detected Low Escalated WS-MAC-005
ALR-00267 13h ago Phishing Email Blocked Informational Investigating WS-PC-004