Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects static QMS 810 and mimikatz driver name used by Mimikatz as exploited in CVE-2021-1675 and CVE-2021-34527
Detects the installation of the Azure Hybrid Connection Manager service to allow remote code execution from Azure function.
Detects value modification of registry key containing path to binary used as screensaver.
Looks for suspicious keyword additions to windows registry.
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
'This query detects an abuse of the DSRM account in order to maintain persistence and access to the organization's Active Directory.
Ref: https://adsecurity.org/?p=1785'
Ref: https://adsecurity.org/?p=1785'
This query looks for signs of impacket atexec module. Should work with others using similar technique.
Author: Jouni Mikkola
More info: https://threathunt.blog/impacket-part-3/
Author: Jouni Mikkola
More info: https://threathunt.blog/impacket-part-3/
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
ZLoader was delivered in a campaign in late summer 2021 using malvertising to download malicious .msi files onto affected machines. This campaign was originally tweeted by @MsftSecIntel on Twitter.
In this campaign, the malicious .msi files create registry keys that use that attacker-created comapny names.
In this campaign, the malicious .msi files create registry keys that use that attacker-created comapny names.
Detects persistence registry keys for Recycle Bin
Detects value modification of registry key containing path to binary used as screensaver.
Detects potential malicious modification of the property value of IsCredGuardEnabled from
HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest to disable Cred Guard on a system.
This is usually used with UseLogonCredential to manipulate the caching credentials.
HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest to disable Cred Guard on a system.
This is usually used with UseLogonCredential to manipulate the caching credentials.
Detects the addition of a key 'MiniNt' to the registry. Upon a reboot, Windows Event Log service will stopped write events.
Unfixed method for UAC bypass from Windows 10. WSReset.exe file associated with the Windows Store. It will run a binary file contained in a low-privilege registry.
Detects the creation of a scheduled task via Registry keys.
Rule to detect the configuration of Run Once registry key. Configured payload can be run by runonce.exe /AlternateShellStartup
Detects various indicators of Microsoft Connection Manager Profile Installer execution
Detects the addition of a key 'MiniNt' to the registry. Upon a reboot, Windows Event Log service will stopped write events.
MosaicLoader
KQL
This hunting query looks Malware Hides Itself Among Windows Defender Exclusions to Evade Detection
Looks for suspicious addition of command interpreters to windows registry.
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Detects registry keys created in OceanLotus (also known as APT32) attacks
Detects changes to the Registry in which a monitor program gets registered to dump the memory of the lsass.exe process
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