Azure Sentinel
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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.
EmojiHunt
KQL
Did you know you can use Emojis in Windows?.
Read more here: https://davidzych.com/abusing-emoji-in-windows.
Check-out who in your organization has renamed his or her computer to a Pizza or to a smiling poop.
You might be amused by the results, or perhaps angry if one of your systems or scripts was broken by this...
Note: this query will also return some machines with non-English charcters that are not Emojis.
Credit for this query goes to miflower - thanks for bringing joy to our lives! :).
Read more here: https://davidzych.com/abusing-emoji-in-windows.
Check-out who in your organization has renamed his or her computer to a Pizza or to a smiling poop.
You might be amused by the results, or perhaps angry if one of your systems or scripts was broken by this...
Note: this query will also return some machines with non-English charcters that are not Emojis.
Credit for this query goes to miflower - thanks for bringing joy to our lives! :).
This query was originally published in the threat analytics report, WDigest credential harvesting.
WDigest is a legacy authentication protocol dating from Windows XP. While still used on some corporate networks, this protocol can be manipulated by attackers to dump system credentials.
The Microsoft Security Response Center published an overview of KB2871997, which addresses WDigest use on older platforms. More recent versions of Windows can be protected with a holistic security approach that follows the principle of least privilege.
The following query returns any attempts to turn WDigest credential caching on through the registry.
References:
https://docs.microsoft.com/previous-versions/windows/it-pro/windows-server-2003/cc778868(v=ws.10)?redirectedfrom=MSDN
https://msrc-blog.microsoft.com/2014/06/05/an-overview-of-kb2871997/
https://www.catalog.update.microsoft.com/Search.aspx?q=KB2871997
https://docs.microsoft.com/windows-server/identity/ad-ds/plan/security-best-practices/implementing-least-privilege-administrative-models
WDigest is a legacy authentication protocol dating from Windows XP. While still used on some corporate networks, this protocol can be manipulated by attackers to dump system credentials.
The Microsoft Security Response Center published an overview of KB2871997, which addresses WDigest use on older platforms. More recent versions of Windows can be protected with a holistic security approach that follows the principle of least privilege.
The following query returns any attempts to turn WDigest credential caching on through the registry.
References:
https://docs.microsoft.com/previous-versions/windows/it-pro/windows-server-2003/cc778868(v=ws.10)?redirectedfrom=MSDN
https://msrc-blog.microsoft.com/2014/06/05/an-overview-of-kb2871997/
https://www.catalog.update.microsoft.com/Search.aspx?q=KB2871997
https://docs.microsoft.com/windows-server/identity/ad-ds/plan/security-best-practices/implementing-least-privilege-administrative-models
This query looks for the DGA pattern of the domain associated with the Nobelium campaign, in order to find other domains with the same activity pattern.
This query is inspired by an Azure Sentinel detection.
Reference - https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Hunting%20Queries/DnsEvents/Solorigate-DNS-Pattern.yaml
This query is inspired by an Azure Sentinel detection.
Reference - https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Hunting%20Queries/DnsEvents/Solorigate-DNS-Pattern.yaml
'This hunting query identifies a fork activity against a repository done by a user who is not the owner of the repo nor a contributes.'
'This hunting query looks for anomalously large LA queries by users.'
'Any Alerts that fired on a given host during the range of +6h and -3d'
'This detection will go over the heartbeats received from the agents of Domain Controllers over the last hour, and will create alerts if the last heartbeats were received an hour ago.'
'This detection uses Normalized Process Events to hunt Certutil activities'
One of the indicators of compromise for the Nobelium (formerly Solorigate) campaign was that unexpected service principals have been added to privileged roles. This query looks for service principals that have been added to any role.
See Understanding "Solorigate"'s Identity IOCs - for Identity Vendors and their customers..
Reference - https://techcommunity.microsoft.com/t5/azure-active-directory-identity/understanding-quot-solorigate-quot-s-identity-iocs-for-identity/ba-p/2007610
See Understanding "Solorigate"'s Identity IOCs - for Identity Vendors and their customers..
Reference - https://techcommunity.microsoft.com/t5/azure-active-directory-identity/understanding-quot-solorigate-quot-s-identity-iocs-for-identity/ba-p/2007610
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