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Acronis - Multiple Inboxes with Malicious Content Detected

View on GitHub ↗Original file ↗

Description

Many inboxes containing malicious content could indicate a potential ongoing phishing attack.

Rule type: Scheduled
Version: 1.0.0
Query frequency: 1h
Query period: 1d
Trigger: gt 2

Declared MITRE coverage

KQL query

Original query, unchanged.

CommonSecurityLog
| where DeviceVendor == "Acronis"
| where DeviceEventClassID in
("MaliciousURLDetectedInM365MailboxBackup",
"MalwareDetectedInM365MailboxBackup",
"MaliciousEmailDetectedPerceptionPointWarning")
| summarize MaliciousContent = count() by DeviceName

Declared entities

Host

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

File: Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisMultipleInboxesWithMaliciousContentDetected.yaml ↗
Commit: 7ca9800 ↗
Source identifier: 5090ad7b-4b47-4cab-9015-bffb43aecde8

Additional source files 2

Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisMultipleInboxesWithMaliciousContentDetected.yamlsource ↗Solutions/Acronis Cyber Protect Cloud/Data/Solution_AcronisCyberProtectCloud.jsonsolution-membership ↗

GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.