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Unauthorised USB Device

Low Investigating
ALR-00127 · 2026-05-22T04:42:46Z

Description

Unauthorised USB mass storage device connected to SRV-SQL-01 by user 'r.davies'. Device blocked by Endpoint Agent endpoint policy.

Alert Metadata

Alert ID
ALR-00127
Timestamp
2026-05-22T04:42:46Z
Severity
Low
Status
Investigating
Detection Source
Endpoint Agent
Assigned Analyst
EmilyAI (auto)

Endpoint Information

Hostname
SRV-SQL-01
User Account
r.davies
Source IP
103.223.216.188
Destination IP
10.0.59.202
Origin Country
IR Iran

MITRE ATT&CK Mapping

Tactic
Initial Access
Technique
T1091
Reference
attack.mitre.org/techniques/T1091

Investigation Timeline

04:42:46 Event ingested by SOC365 Engine
04:42:47 EmilyAI triage started — correlation enrichment
04:42:54 EmilyAI confidence: 84% — escalated to human analyst
04:43:06 Alert assigned to analyst: EmilyAI (auto)
04:44:24 Investigation started — querying SIEM and threat intelligence

Related Alerts

ID Time Alert Severity Status Host
ALR-00394 6h ago Brute Force SSH High Investigating SRV-SQL-01
ALR-00401 6h ago Rogue DHCP Server Low False Positive SRV-SQL-01
ALR-00198 7h ago Unauthorised USB Device Low Open WS-MAC-005
ALR-00114 20h ago Unauthorised USB Device Low Open SRV-APP-01
ALR-00267 1d ago C2 Beacon Activity Medium Investigating SRV-SQL-01