Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
979 detections
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Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
Detects registry changes to Office macro settings. The TrustRecords contain information on executed macro-enabled documents. (see references)
OilRig APT Activity
Sigma
Detects OilRig activity as reported by Nyotron in their March 2018 report
Detects actions caused by the RedMimicry Winnti playbook
Change the Fax Dll
Sigma
Detect possible persistence using Fax DLL load when service restart
Detects changes to the NGenAssemblyUsageLog registry key.
.NET Usage Log output location can be controlled by setting the NGenAssemblyUsageLog CLR configuration knob in the Registry or by configuring an environment variable (as described in the next section).
By simplify specifying an arbitrary value (e.g. fake output location or junk data) for the expected value, a Usage Log file for the .NET execution context will not be created.
.NET Usage Log output location can be controlled by setting the NGenAssemblyUsageLog CLR configuration knob in the Registry or by configuring an environment variable (as described in the next section).
By simplify specifying an arbitrary value (e.g. fake output location or junk data) for the expected value, a Usage Log file for the .NET execution context will not be created.
Detect set UseActionCenterExperience to 0 to disable the Windows security center notification
OilRig APT Activity
Sigma
Detects OilRig activity as reported by Nyotron in their March 2018 report
Detects the execution of "reg.exe" to alter registry keys that would replace the user's desktop background.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
Remote registry management using REG utility from non-admin workstation
Detects changes to the NGenAssemblyUsageLog registry key.
.NET Usage Log output location can be controlled by setting the NGenAssemblyUsageLog CLR configuration knob in the Registry or by configuring an environment variable (as described in the next section).
By simplify specifying an arbitrary value (e.g. fake output location or junk data) for the expected value, a Usage Log file for the .NET execution context will not be created.
.NET Usage Log output location can be controlled by setting the NGenAssemblyUsageLog CLR configuration knob in the Registry or by configuring an environment variable (as described in the next section).
By simplify specifying an arbitrary value (e.g. fake output location or junk data) for the expected value, a Usage Log file for the .NET execution context will not be created.
Detects tampering of RDP Terminal Service/Server sensitive settings.
Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections'...etc
Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections'...etc
Looks for suspicious base64 encoded registry keys being created.
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Author: Jouni Mikkola
References:
https://threathunt.blog/registry-hunts/
Detects registry modifications that disable internal tools or functions in explorer (malware like Agent Tesla uses this technique)
Detects potential persistence activity via the registering of a new custom protocole handlers. While legitimate applications register protocole handlers often times during installation. And attacker can abuse this by setting a custom handler to be used as a persistence mechanism.
Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
Detects setting of a new registry value related to BgInfo configuration, which can be abused to execute custom VBScript via "BgInfo.exe"
Detects tampering of RDP Terminal Service/Server sensitive settings.
Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections', etc.
Such as allowing unauthorized users access to a system via the 'fAllowUnsolicited' or enabling RDP via 'fDenyTSConnections', etc.
Detects registry keys related to NetWire RAT
Detects registry value settings that would replace the user's desktop background.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
This is a common technique used by malware to change the desktop background to a ransom note or other image.
Detects registry modifications that hide internal tools or functions from the user (malware like Agent Tesla, Hermetic Wiper uses this technique)
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