Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects code fragments found in small and obfuscated AMSI bypass PowerShell scripts
Detects attempts to remove Windows Defender configuration using the 'MpPreference' cmdlet
Detects a typical pattern of a CobaltStrike BOF which inject into other processes
Detects process access events where WerFaultSecure accesses MsMpEng.exe with dbgcore.dll or dbghelp.dll in the call trace, indicating potential EDR freeze techniques.
This technique leverages WerFaultSecure.exe running as a Protected Process Light (PPL) with WinTCB protection level to call MiniDumpWriteDump and suspend EDR/AV processes, allowing malicious activity to execute undetected during the suspension period.
This technique leverages WerFaultSecure.exe running as a Protected Process Light (PPL) with WinTCB protection level to call MiniDumpWriteDump and suspend EDR/AV processes, allowing malicious activity to execute undetected during the suspension period.
Detects attempts to add, modify, or delete Windows Credential Guard related registry keys or values via command line tools such as Reg.exe or PowerShell.
Credential Guard uses virtualization-based security to isolate secrets so that only privileged system software can access them.
Adversaries may disable Credential Guard to gain access to sensitive credentials stored in the system, such as NTLM hashes and Kerberos tickets, which can be used for lateral movement and privilege escalation.
The rule matches suspicious command lines that target DeviceGuard or LSA registry paths and manipulate keys like EnableVirtualizationBasedSecurity, RequirePlatformSecurityFeatures, or LsaCfgFlags.
Such activity may indicate an attempt to disable or tamper with Credential Guard, potentially exposing sensitive credentials for misuse.
Credential Guard uses virtualization-based security to isolate secrets so that only privileged system software can access them.
Adversaries may disable Credential Guard to gain access to sensitive credentials stored in the system, such as NTLM hashes and Kerberos tickets, which can be used for lateral movement and privilege escalation.
The rule matches suspicious command lines that target DeviceGuard or LSA registry paths and manipulate keys like EnableVirtualizationBasedSecurity, RequirePlatformSecurityFeatures, or LsaCfgFlags.
Such activity may indicate an attempt to disable or tamper with Credential Guard, potentially exposing sensitive credentials for misuse.
Detects attempts to remove Windows Defender configurations using the 'MpPreference' cmdlet
Detects the use of the PowerShell "Set-Service" cmdlet to change the startup type of a service to "disabled" or "manual"
Detects the usage of "reg.exe" to add Defender folder exclusions. Qbot has been seen using this technique to add exclusions for folders within AppData and ProgramData.
Detects the use of reg.exe to disable the Event Tracing for Windows (ETW) Autologger session for Windows Defender API and Audit events.
By setting the 'Start' value to '0' for the 'DefenderApiLogger' or 'DefenderAuditLogger' session, an attacker can prevent these critical security events
from being logged, effectively blinding monitoring tools that rely on this data. This is a powerful defense evasion technique.
By setting the 'Start' value to '0' for the 'DefenderApiLogger' or 'DefenderAuditLogger' session, an attacker can prevent these critical security events
from being logged, effectively blinding monitoring tools that rely on this data. This is a powerful defense evasion technique.
Detects execution of "reg.exe" to disable security services such as Windows Defender.
Detects commands that temporarily turn off Volume Snapshots
Detects potential suspicious behaviour using secedit.exe. Such as exporting or modifying the security policy
Detects modifications or creations of Windows Defender's default threat action settings based on severity to 'allow' or take 'no action'.
This is a highly suspicious configuration change that effectively disables Defender's ability to automatically mitigate threats of a certain severity level,
allowing malicious software to run unimpeded. An attacker might use this technique to bypass defenses before executing payloads.
This is a highly suspicious configuration change that effectively disables Defender's ability to automatically mitigate threats of a certain severity level,
allowing malicious software to run unimpeded. An attacker might use this technique to bypass defenses before executing payloads.
Detects NetNTLM downgrade attack
Detects attempts to disable Windows Credential Guard by setting registry values to 0. Credential Guard uses virtualization-based security to isolate secrets so that only privileged system software can access them.
Adversaries may disable Credential Guard to gain access to sensitive credentials stored in the system, such as NTLM hashes and Kerberos tickets, which can be used for lateral movement and privilege escalation.
Adversaries may disable Credential Guard to gain access to sensitive credentials stored in the system, such as NTLM hashes and Kerberos tickets, which can be used for lateral movement and privilege escalation.
Detects when the "index" value of a scheduled task is modified from the registry
Which effectively hides it from any tooling such as "schtasks /query" (Read the referenced link for more information about the effects of this technique)
Which effectively hides it from any tooling such as "schtasks /query" (Read the referenced link for more information about the effects of this technique)
Detects usage of Windows Input Method Editor (IME) keyboard layout feature, which allows an attacker to load a DLL into the process after sending the WM_INPUTLANGCHANGEREQUEST message.
Before doing this, the client needs to register the DLL in a special registry key that is assumed to implement this keyboard layout. This registry key should store a value named "Ime File" with a DLL path.
IMEs are essential for languages that have more characters than can be represented on a standard keyboard, such as Chinese, Japanese, and Korean.
Before doing this, the client needs to register the DLL in a special registry key that is assumed to implement this keyboard layout. This registry key should store a value named "Ime File" with a DLL path.
IMEs are essential for languages that have more characters than can be represented on a standard keyboard, such as Chinese, Japanese, and Korean.
Detects changes to the registry value "PythonFunctionWarnings" that would prevent any warnings or alerts from showing when Python functions are about to be executed.
Threat actors could run malicious code through the new Microsoft Excel feature that allows Python to run within the spreadsheet.
Threat actors could run malicious code through the new Microsoft Excel feature that allows Python to run within the spreadsheet.
Detects when the Windows Vulnerable Driver Blocklist is set to disabled. This setting is crucial for preventing the loading of known vulnerable drivers,
and its modification may indicate an attempt to bypass security controls. It is often targeted by threat actors to facilitate the installation of malicious or vulnerable drivers,
particularly in scenarios involving Endpoint Detection and Response (EDR) bypass techniques.
This rule applies to systems that support the Vulnerable Driver Blocklist feature, including Windows 10 version 1903 and later, and Windows Server 2022 and later.
Note that this change will require a reboot to take effect, and this rule only detects the registry modification action.
and its modification may indicate an attempt to bypass security controls. It is often targeted by threat actors to facilitate the installation of malicious or vulnerable drivers,
particularly in scenarios involving Endpoint Detection and Response (EDR) bypass techniques.
This rule applies to systems that support the Vulnerable Driver Blocklist feature, including Windows 10 version 1903 and later, and Windows Server 2022 and later.
Note that this change will require a reboot to take effect, and this rule only detects the registry modification action.
Detects when a user bypasses the push protection on a secret detected by secret scanning.
Detects if the secret scanning feature is disabled for an enterprise or repository.
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