Alerts for SQL Database and Azure Synapse Analytics
This article lists the security alerts you might get for SQL Database and Azure Synapse Analytics from Microsoft Defender for Cloud and any Microsoft Defender plans you enabled. The alerts shown in your environment depend on the resources and services you're protecting, and your customized configuration.
Note
Some of the recently added alerts powered by Microsoft Defender Threat Intelligence and Microsoft Defender for Endpoint might be undocumented.
Learn how to respond to these alerts.
Note
Alerts from different sources might take different amounts of time to appear. For example, alerts that require analysis of network traffic might take longer to appear than alerts related to suspicious processes running on virtual machines.
SQL Database and Azure Synapse Analytics alerts
A possible vulnerability to SQL Injection
(SQL.DB_VulnerabilityToSqlInjection SQL.VM_VulnerabilityToSqlInjection SQL.MI_VulnerabilityToSqlInjection SQL.DW_VulnerabilityToSqlInjection Synapse.SQLPool_VulnerabilityToSqlInjection)
Description: An application has generated a faulty SQL statement in the database. This can indicate a possible vulnerability to SQL injection attacks. There are two possible reasons for a faulty statement. A defect in application code might have constructed the faulty SQL statement. Or, application code or stored procedures didn't sanitize user input when constructing the faulty SQL statement, which can be exploited for SQL injection.
MITRE tactics: PreAttack
Severity: Medium
Logon activity from a potentially harmful application
(SQL.DB_HarmfulApplication SQL.VM_HarmfulApplication SQL.MI_HarmfulApplication SQL.DW_HarmfulApplication Synapse.SQLPool_HarmfulApplication)
Description: A potentially harmful application attempted to access your resource.
MITRE tactics: PreAttack
Severity: High
Log on from an unusual Azure Data Center
(SQL.DB_DataCenterAnomaly SQL.VM_DataCenterAnomaly SQL.DW_DataCenterAnomaly SQL.MI_DataCenterAnomaly Synapse.SQLPool_DataCenterAnomaly)
Description: There has been a change in the access pattern to an SQL Server, where someone has signed in to the server from an unusual Azure Data Center. In some cases, the alert detects a legitimate action (a new application or Azure service). In other cases, the alert detects a malicious action (attacker operating from breached resource in Azure).
MITRE tactics: Probing
Severity: Low
Log on from an unusual location
(SQL.DB_GeoAnomaly SQL.VM_GeoAnomaly SQL.DW_GeoAnomaly SQL.MI_GeoAnomaly Synapse.SQLPool_GeoAnomaly)
Description: There has been a change in the access pattern to SQL Server, where someone has signed in to the server from an unusual geographical location. In some cases, the alert detects a legitimate action (a new application or developer maintenance). In other cases, the alert detects a malicious action (a former employee or external attacker).
MITRE tactics: Exploitation
Severity: Medium
Login from a principal user not seen in 60 days
(SQL.DB_PrincipalAnomaly SQL.VM_PrincipalAnomaly SQL.DW_PrincipalAnomaly SQL.MI_PrincipalAnomaly Synapse.SQLPool_PrincipalAnomaly)
Description: A principal user not seen in the last 60 days has logged into your database. If this database is new or this is expected behavior caused by recent changes in the users accessing the database, Defender for Cloud will identify significant changes to the access patterns and attempt to prevent future false positives.
MITRE tactics: Exploitation
Severity: Medium
Login from a domain not seen in 60 days
(SQL.DB_DomainAnomaly SQL.VM_DomainAnomaly SQL.DW_DomainAnomaly SQL.MI_DomainAnomaly Synapse.SQLPool_DomainAnomaly)
Description: A user has logged in to your resource from a domain no other users have connected from in the last 60 days. If this resource is new or this is expected behavior caused by recent changes in the users accessing the resource, Defender for Cloud will identify significant changes to the access patterns and attempt to prevent future false positives.
MITRE tactics: Exploitation
Severity: Medium
Login from a suspicious IP
(SQL.DB_SuspiciousIpAnomaly SQL.VM_SuspiciousIpAnomaly SQL.DW_SuspiciousIpAnomaly SQL.MI_SuspiciousIpAnomaly Synapse.SQLPool_SuspiciousIpAnomaly)
Description: Your resource has been accessed successfully from an IP address that Microsoft Threat Intelligence has associated with suspicious activity.
MITRE tactics: PreAttack
Severity: Medium
Potential SQL injection
(SQL.DB_PotentialSqlInjection SQL.VM_PotentialSqlInjection SQL.MI_PotentialSqlInjection SQL.DW_PotentialSqlInjection Synapse.SQLPool_PotentialSqlInjection)
Description: An active exploit has occurred against an identified application vulnerable to SQL injection. This means an attacker is trying to inject malicious SQL statements by using the vulnerable application code or stored procedures.
MITRE tactics: PreAttack
Severity: High
Suspected brute force attack using a valid user
(SQL.DB_BruteForce SQL.VM_BruteForce SQL.DW_BruteForce SQL.MI_BruteForce Synapse.SQLPool_BruteForce)
Description: A potential brute force attack has been detected on your resource. The attacker is using the valid user (username), which has permissions to log in.
MITRE tactics: PreAttack
Severity: High
Suspected brute force attack
(SQL.DB_BruteForce SQL.VM_BruteForce SQL.DW_BruteForce SQL.MI_BruteForce Synapse.SQLPool_BruteForce)
Description: A potential brute force attack has been detected on your resource.
MITRE tactics: PreAttack
Severity: High
Suspected successful brute force attack
(SQL.DB_BruteForce SQL.VM_BruteForce SQL.DW_BruteForce SQL.MI_BruteForce Synapse.SQLPool_BruteForce)
Description: A successful login occurred after an apparent brute force attack on your resource.
MITRE tactics: PreAttack
Severity: High
SQL Server potentially spawned a Windows command shell and accessed an abnormal external source
(SQL.DB_ShellExternalSourceAnomaly SQL.VM_ShellExternalSourceAnomaly SQL.DW_ShellExternalSourceAnomaly SQL.MI_ShellExternalSourceAnomaly Synapse.SQLPool_ShellExternalSourceAnomaly)
Description: A suspicious SQL statement potentially spawned a Windows command shell with an external source that hasn't been seen before. Executing a shell that accesses an external source is a method used by attackers to download malicious payload and then execute it on the machine and compromise it. This enables an attacker to perform malicious tasks under remote direction. Alternatively, accessing an external source can be used to exfiltrate data to an external destination.
MITRE tactics: Execution
Severity: High/Medium
Unusual payload with obfuscated parts has been initiated by SQL Server
(SQL.VM_PotentialSqlInjection)
Description: Someone has initiated a new payload utilizing the layer in SQL Server that communicates with the operating system while concealing the command in the SQL query. Attackers commonly hide impactful commands which are popularly monitored like xp_cmdshell, sp_add_job and others. Obfuscation techniques abuse legitimate commands like string concatenation, casting, base changing, and others, to avoid regex detection and hurt the readability of the logs.
MITRE tactics: Execution
Severity: High/Medium
Note
For alerts that are in preview: The Azure Preview Supplemental Terms include additional legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.
Next steps
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