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Ransomware Behaviour Detected

Medium Open
ALR-00334 · 2026-05-22T05:21:59Z

Description

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

Alert Metadata

Alert ID
ALR-00334
Timestamp
2026-05-22T05:21:59Z
Severity
Medium
Status
Open
Detection Source
EmilyAI Triage
Assigned Analyst
Marcus Webb

Endpoint Information

Hostname
SRV-WEB-01
User Account
f.hall
Source IP
45.34.148.78
Destination IP
10.0.23.248
Origin Country
CN China

MITRE ATT&CK Mapping

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

Investigation Timeline

05:21:59 Event ingested by SOC365 Engine
05:22:02 EmilyAI triage started — correlation enrichment
05:22:04 EmilyAI confidence: 86% — escalated to human analyst
05:22:31 Alert assigned to analyst: Marcus Webb
05:24:24 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00042 53m ago Brute Force SSH Medium False Positive SRV-WEB-01
ALR-00396 1h ago Ransomware Behaviour Detected Low False Positive WS-LAP-010
ALR-00481 1h ago Ransomware Behaviour Detected Low Investigating SW-CORE-01
ALR-00415 2h ago Ransomware Behaviour Detected Low False Positive AP-WIFI-03
ALR-00181 2h ago Unauthorised USB Device Low Escalated SRV-WEB-01