Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This query uncovers seen IPAddressV4 network subnets
'Detects suspicious user agent strings used by known hack tools'
This query is a function that consumes the publicly available Azure IP address list and checks a list of remote IP addresses against it to see if they are Azure IP addresses or not.
To use this, replace the demo portion of the query (DeviceNetworkEvents | take 10000) with your query with the column name of the IP address to check named RemoteIP. The function will add a new column to the end called IsAzure denoting if the IP address range is in the published list or not.
Please note that over time the URL to the Azure IP address list may need to be updated.
To use this, replace the demo portion of the query (DeviceNetworkEvents | take 10000) with your query with the column name of the IP address to check named RemoteIP. The function will add a new column to the end called IsAzure denoting if the IP address range is in the published list or not.
Please note that over time the URL to the Azure IP address list may need to be updated.
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
Search for the files that are using a compromised certificate associated with the Lapsus$ group.
You can remove the comments to:
1. get the list of devices where there is at least one file signed with the certificate
2. get the list of files signed with the certificate
3. get the list of files signed with the certificate group by Devices
You can remove the comments to:
1. get the list of devices where there is at least one file signed with the certificate
2. get the list of files signed with the certificate
3. get the list of files signed with the certificate group by Devices
Hunting for credential phishing using the "Referral" infrastructure using Defender for Office 365 data
This query will identify the Microsoft Defender Antivirus Engine version and Microsoft Defender Antivirus Security Intelligence version (and timestamp), Product update version (aka Platform Update version) as well as the Microsoft Defender Antivirus Mode on the endpoint (Active, Passive, etc.).
'Alerts in links that have been shared across multiple Zoom chat channels by the same user in a short space if time.
Adjust the threshold figure to change the number of channels a message needs to be posted in before an alert is raised.'
Adjust the threshold figure to change the number of channels a message needs to be posted in before an alert is raised.'
'Identifies instances where Wazuh logged over 400 '403' Web Errors from one IP Address. To onboard Wazuh data into Sentinel please view: https://github.com/wazuh/wazuh-documentation/blob/master/source/azure/monitoring%20activity.rst'
'Any Alerts that fired on any host with this same process in the range of +-1d'
Query 1 shows you any network communication happened from endpoints to a specific Remote IP or Remote URL.
Ensure to update RemoteIP and RemoteURL variable.
For questions @MiladMSFT on Twitter or milad.aslaner@microsoft.com by email.
Ensure to update RemoteIP and RemoteURL variable.
For questions @MiladMSFT on Twitter or milad.aslaner@microsoft.com by email.
This query correlates Microsoft Defender for Office 365 signals and Microsoft Entra ID identity data to find the relevant endpoint event BrowerLaunchedToOpen in Microsoft Defender ATP.
This event reflects relevant clicks on the malicious URL in the spear-phishing email recognized by Microsoft Defender for Office 365.
This event reflects relevant clicks on the malicious URL in the spear-phishing email recognized by Microsoft Defender for Office 365.
This query identifies when a user clicks a link that opens a browser to navigate to a URL
which uses redirection. It then filters out any redirections to URLs in the same DNS namespace
as the originating URL. Redirection identification is done based on URL query parameters
outlined in the following article: https://www.bleepingcomputer.com/news/security/snapchat-amex-sites-abused-in-microsoft-365-phishing-attacks/
which uses redirection. It then filters out any redirections to URLs in the same DNS namespace
as the originating URL. Redirection identification is done based on URL query parameters
outlined in the following article: https://www.bleepingcomputer.com/news/security/snapchat-amex-sites-abused-in-microsoft-365-phishing-attacks/
Added credential from country X and Signed-In from country Y in a pecific time window:
This query tries to find all applications that credentials were added to them from country X while the application's identity Signed-In from country Y in a specific time window.
This query tries to find all applications that credentials were added to them from country X while the application's identity Signed-In from country Y in a specific time window.
This query helps reviewing list of top users click on Phis URLs
Intent:
- Use MTP capability to look for insider threat potential risk indicators
- Indicators would then serve as the building block for insider threat risk modeling in subsequent tools
Definition of Insider Threat:
"The potential for an individual who has or had authorized access to an organization's assets to use their access, either maliciously or unintentionally, to act in a way that could negatively affect the organization."
This collection of queries describes the different indicators that could be used to model and look for patterns suggesting an increased risk of an individual becoming a potential insider threat.
Note: no single indicator should be used as a lone determinant of insider threat activity, but should be part of an overall program to understand the increased risk to your organization's critical assets. This in turn is used to feed an investigation by a formal insider threat program to look at the context associated with the whole person to understand the implication of a set of indicators.
- Use MTP capability to look for insider threat potential risk indicators
- Indicators would then serve as the building block for insider threat risk modeling in subsequent tools
Definition of Insider Threat:
"The potential for an individual who has or had authorized access to an organization's assets to use their access, either maliciously or unintentionally, to act in a way that could negatively affect the organization."
This collection of queries describes the different indicators that could be used to model and look for patterns suggesting an increased risk of an individual becoming a potential insider threat.
Note: no single indicator should be used as a lone determinant of insider threat activity, but should be part of an overall program to understand the increased risk to your organization's critical assets. This in turn is used to feed an investigation by a formal insider threat program to look at the context associated with the whole person to understand the implication of a set of indicators.
Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.
Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.
Microsoft has observed threat actors exploiting vulnerabilities associated with Log4J.
Identify prior activity from this campaign using IOCs shared by Microsoft's Threat Intelligence Center, or MSTIC.
Read more: https://blogs.microsoft.com/on-the-issues/2020/10/28/cyberattacks-phosphorus-t20-munich-security-conference/
Read more: https://blogs.microsoft.com/on-the-issues/2020/10/28/cyberattacks-phosphorus-t20-munich-security-conference/
This query was originally published in the threat analytics report, Confluence and WebLogic abuse.
2019 has seen several seemingly related campaigns targeting Atlassian Confluence Server and Oracle WebLogic Server. Although these campaigns use different implants and delivery methods, they consistently use the same infrastructure, and exploit the same vulnerabilities.
The campaigns have specifically targeted:
1. CVE-2019-3396 - Software update
2. CVE-2019-2725 - Software update
The following query detects activity broadly associated with these campaigns.
2019 has seen several seemingly related campaigns targeting Atlassian Confluence Server and Oracle WebLogic Server. Although these campaigns use different implants and delivery methods, they consistently use the same infrastructure, and exploit the same vulnerabilities.
The campaigns have specifically targeted:
1. CVE-2019-3396 - Software update
2. CVE-2019-2725 - Software update
The following query detects activity broadly associated with these campaigns.
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