Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects disabling Windows Defender Tamper Protection
Detects when an attacker modifies the registry key "HtmlHelp Author" to achieve persistence
Detect enable rdp feature to allow specific user to rdp connect on the targeted machine
Detects tamper attempts to sophos av functionality via registry key modification
Detects changes to "DsrmAdminLogonBehavior" registry value.
During a Domain Controller (DC) promotion, administrators create a Directory Services Restore Mode (DSRM) local administrator account with a password that rarely changes. The DSRM account is an “Administrator” account that logs in with the DSRM mode when the server is booting up to restore AD backups or recover the server from a failure.
Attackers could abuse DSRM account to maintain their persistence and access to the organization's Active Directory.
If the "DsrmAdminLogonBehavior" value is set to "0", the administrator account can only be used if the DC starts in DSRM.
If the "DsrmAdminLogonBehavior" value is set to "1", the administrator account can only be used if the local AD DS service is stopped.
If the "DsrmAdminLogonBehavior" value is set to "2", the administrator account can always be used.
During a Domain Controller (DC) promotion, administrators create a Directory Services Restore Mode (DSRM) local administrator account with a password that rarely changes. The DSRM account is an “Administrator” account that logs in with the DSRM mode when the server is booting up to restore AD backups or recover the server from a failure.
Attackers could abuse DSRM account to maintain their persistence and access to the organization's Active Directory.
If the "DsrmAdminLogonBehavior" value is set to "0", the administrator account can only be used if the DC starts in DSRM.
If the "DsrmAdminLogonBehavior" value is set to "1", the administrator account can only be used if the local AD DS service is stopped.
If the "DsrmAdminLogonBehavior" value is set to "2", the administrator account can always be used.
Detects execution of commands via the run dialog box on Windows by checking values of the "RunMRU" registry key.
This technique was seen being abused by threat actors to deceive users into pasting and executing malicious commands, often disguised as CAPTCHA verification steps.
This technique was seen being abused by threat actors to deceive users into pasting and executing malicious commands, often disguised as CAPTCHA verification steps.
Detects setting a custom URL for OneDriveStandaloneUpdater.exe to download a file from the Internet without executing any
anomalous executables with suspicious arguments. The downloaded file will be in C:\Users\redacted\AppData\Local\Microsoft\OneDrive\StandaloneUpdaterreSignInSettingsConfig.json
anomalous executables with suspicious arguments. The downloaded file will be in C:\Users\redacted\AppData\Local\Microsoft\OneDrive\StandaloneUpdaterreSignInSettingsConfig.json
Detect set EnableFirewall to 0 to disable the Windows firewall
Detects .NET Framework CLR and .NET Core CLR "cor_enable_profiling" and "cor_profiler" variables being set and configured.
Detects a possible persistence mechanism using RUN key for Windows Explorer and pointing to a suspicious folder
Detects modification of autostart extensibility point (ASEP) in registry.
Detects the enabling of the "EnablePeriodicBackup" registry value. Once enabled, The OS will backup System registry hives on restarts to the "C:\Windows\System32\config\RegBack" folder. Windows creates a "RegIdleBackup" task to manage subsequent backups.
Registry backup was a default behavior on Windows and was disabled as of "Windows 10, version 1803".
Registry backup was a default behavior on Windows and was disabled as of "Windows 10, version 1803".
Detects modification of autostart extensibility point (ASEP) in registry.
Detects modification to the "Default" value of the "MyComputer" key and subkeys to point to a custom binary that will be launched whenever the associated action is executed (see reference section for example)
Detects registry changes to Office trust records where the path is located in a potentially suspicious location
Detects UAC bypass method using Windows event viewer
Potential adversaries stopping ETW providers recording loaded .NET assemblies.
Detects modification of autostart extensibility point (ASEP) in registry.
Detects the modification of the registry to disable a system restore on the computer
Bypasses User Account Control using Event Viewer and a relevant Windows Registry modification
Detect the creation of a service with a service binary located in a uncommon directory
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