Azure Sentinel
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Identifies potential service tampering related to Microsoft Defender services.
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/MultipleDataSources/PotentialMicrosoftDefenderTampering.yaml
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/MultipleDataSources/PotentialMicrosoftDefenderTampering.yaml
Remote Monitoring and Management (RMM) programs are IT to manage remote endpoints. Attackers have begun to abuse these programs to persist or provide C2 channels.
https://github.com/jischell-msft/RemoteManagementMonitoringTools
https://github.com/jischell-msft/RemoteManagementMonitoringTools
Remote Monitoring and Management (RMM) programs are IT to manage remote endpoints. Attackers have begun to abuse these programs to persist or provide C2 channels.
https://github.com/jischell-msft/RemoteManagementMonitoringTools
https://github.com/jischell-msft/RemoteManagementMonitoringTools
First query digs in print spooler drivers folder for any file creations,
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Unsigned files
or ones that don't have any relations to printers that you are using are
suspicious.
Second query that can be used for finding client machines that
could be operating print servers or file servers is also included here.
As additional mitigation for the exploit you might want to block the
incoming traffic to the SMB or EPMAP Ports (445) if you need to keep the
spooler service running to print from clients.
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Unsigned files
or ones that don't have any relations to printers that you are using are
suspicious.
Second query that can be used for finding client machines that
could be operating print servers or file servers is also included here.
As additional mitigation for the exploit you might want to block the
incoming traffic to the SMB or EPMAP Ports (445) if you need to keep the
spooler service running to print from clients.
This hunting query looks for hosts exporting a mailbox from an on-prem Exchange server, followed by
that same host removing the export within a short time window. This pattern has been observed by attackers
when exfiltrating emails from a target environment. A Mailbox export is unlikely to be a common command run so look for
activity from unexpected hosts and accounts.
Reference: https://www.volexity.com/blog/2020/12/14/dark-halo-leverages-solarwinds-compromise-to-breach-organizations/
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/SecurityEvent/HostExportingMailboxAndRemovingExport.yaml
that same host removing the export within a short time window. This pattern has been observed by attackers
when exfiltrating emails from a target environment. A Mailbox export is unlikely to be a common command run so look for
activity from unexpected hosts and accounts.
Reference: https://www.volexity.com/blog/2020/12/14/dark-halo-leverages-solarwinds-compromise-to-breach-organizations/
Query insprired by Azure Sentinel detection https://github.com/Azure/Azure-Sentinel/blob/master/Hunting%20Queries/SecurityEvent/HostExportingMailboxAndRemovingExport.yaml
'This query looks at the last 14 days for "Consent to application" operation by a user/app which could potentially mean unauthorized access. Additional context is added from AuditLogs based on CorrleationId from the same account that performed the action.'
'This hunting query looks for increases in the number of workspaces queried by a user.'
'CreepyDrive uses OneDrive for command and control. This detection identifies URLs specific to CreepyDrive.'
Following the September 14th, 2021 release of three Elevation of Privilege (EoP) vulnerabilities (CVE-2021-38645, CVE-2021-38649, CVE-2021-38648) and one unauthenticated Remote Code Execution (RCE) vulnerability (CVE-2021-38647) in the Open Management Infrastructure (OMI) Framework.
This detection validates that any OMS-agent that is reporting to the Microsoft Sentinel workspace is updated with the patch. The detection will go over the heartbeats received from all agents over the last day and will create alert for those agents who are not updated.
This detection validates that any OMS-agent that is reporting to the Microsoft Sentinel workspace is updated with the patch. The detection will go over the heartbeats received from all agents over the last day and will create alert for those agents who are not updated.
'Identifies whenever a user account has the setting "Password Never Expires" in the user account properties selected.
This is indicated in Security event 4738 in the EventData item labeled UserAccountControl with an included value of %%2089.
%%2089 resolves to "Don't Expire Password - Enabled".'
This is indicated in Security event 4738 in the EventData item labeled UserAccountControl with an included value of %%2089.
%%2089 resolves to "Don't Expire Password - Enabled".'
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