Disable Internal Tools or Feature in Registry
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About the rule
Rule Type
Standard
Rule Description
Detects registry modifications that change features of internal Windows tools (malware like Agent Tesla uses this technique)
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND ((OBJECTNAME endswith "SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\DisableCMD,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoControlPanel,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRun,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\StartMenuLogOff,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableChangePassword,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableLockWorkstation,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskmgr,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\NoDispBackgroundPage,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\NoDispCPL,SOFTWARE\Policies\Microsoft\Windows\Explorer\DisableNotificationCenter,SOFTWARE\Policies\Microsoft\Windows\System\DisableCMD" OR (OBJECTNAME endswith "SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Policies\Microsoft\Windows\Explorer,SOFTWARE\Policies\Microsoft\Windows\System" AND OBJECTVALUENAME = "DisableCMD,NoControlPanel,NoRun,StartMenuLogOff,DisableChangePassword,DisableLockWorkstation,DisableRegistryTools,DisableTaskmgr,NoDispBackgroundPage,NoDispCPL,DisableNotificationCenter,DisableCMD")) AND (INFORMATION = "DWORD (0x00000001)" OR (CHANGES = 1 AND NEWTYPE = "REG_DWORD"))) OR ((OBJECTNAME endswith "SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin,Software\Microsoft\Windows\CurrentVersion\Policies\System\InactivityTimeoutSecs,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\shutdownwithoutlogon,SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications\ToastEnabled,SYSTEM\CurrentControlSet\Control\Storage\Write Protection,SYSTEM\CurrentControlSet\Control\StorageDevicePolicies\WriteProtect" OR (OBJECTNAME endswith "SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,Software\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System,SOFTWARE\Microsoft\Windows\CurrentVersion\PushNotifications,SYSTEM\CurrentControlSet\Control\Storage,SYSTEM\CurrentControlSet\Control\StorageDevicePolicies" AND OBJECTVALUENAME = "ConsentPromptBehaviorAdmin,InactivityTimeoutSecs,shutdownwithoutlogon,ToastEnabled,Write Protection,WriteProtect")) AND (INFORMATION = "DWORD (0x00000000)" OR (CHANGES = 0 AND NEWTYPE = "REG_DWORD"))) select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113, Nasreddine Bencherchali (Nextron Systems), CrimpSec
