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Trojan.MulDrop23.64586

Added to the Dr.Web virus database: 2023-10-04

Virus description added:

Technical Information

Malicious functions
To complicate detection of its presence in the operating system,
blocks the following features:
  • User Account Control (UAC)
Executes the following
  • '<SYSTEM32>\net.exe' stop Winmgmt /y
  • '<SYSTEM32>\net.exe' stop WManSvc
Launches a large number of processes
Modifies file system
Creates the following files
  • %TEMP%\os2w0epo.bat
  • %WINDIR%\temp\fwtsqmfile01.sqm
Miscellaneous
Executes the following
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\oS2w0epo.bat" "
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl" /v "Win32PrioritySeparation" /t REG_DWORD /d "40" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl" /v "ConvertibleSlateMode" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "MouseThreshold2" /T REG_SZ /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "MouseThreshold1" /T REG_SZ /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "MouseSpeed" /T REG_SZ /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "SmoothMouseYCurve" /T REG_BINARY /d 0000000000000000000038000000000000007000000000000000A800000000000000E00000000000
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "SmoothMouseXCurve" /T REG_BINARY /d 0000000000000000C0CC0C0000000000809919000000000040662600000000000033330000000000
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Mouse" /F /V "MouseSensitivity" /T REG_SZ /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_CURRENT_USER\Control Panel\Desktop" /F /V "MenuShowDelay" /T REG_SZ /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SYSTEM\CurrentControlSet\Services\DXGKrnl" /F /V "MonitorRefreshLatencyTolerance" /T REG_DWORD /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SYSTEM\CurrentControlSet\Services\DXGKrnl" /F /V "MonitorLatencyTolerance" /T REG_DWORD /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power" /F /V "EventProcessorEnabled" /T REG_DWORD /d 0
  • '<SYSTEM32>\reg.exe' ADD "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Diagnostics\Performance" /F /V "DisableDiagnosticTracing" /T REG_DWORD /d 1
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters" /v "DisableLargeMtu" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" /v "DisableTaskOffload" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters" /v "DisableLargeMtu" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider" /v "NetbtPriority" /t REG_DWORD /d "7" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider" /v "DnsPriority" /t REG_DWORD /d "6" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider" /v "HostsPriority" /t REG_DWORD /d "5" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\ServiceProvider" /v "LocalPriority" /t REG_DWORD /d "4" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Control\Power" /v "HibernateEnabled" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\Maintenance" /v "MaintenanceDisabled" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Control" /v "WaitToKillServiceTimeout" /t REG_SZ /d "2000" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "MenuShowDelay" /t REG_SZ /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "LowLevelHooksTimeout" /t REG_SZ /d "1000" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "WaitToKillAppTimeout" /t REG_SZ /d "2000" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "HungAppTimeout" /t REG_SZ /d "1000" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\PolicyManager\current\device\Update" /v "ExcludeWUDriversInQualityUpdate" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\PolicyManager\default\Update" /v "ExcludeWUDriversInQualityUpdate" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\PolicyManager\default\Update\ExcludeWUDriversInQualityUpdate" /v "value" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\WindowsUpdate\UX\Settings" /v "ExcludeWUDriversInQualityUpdate" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "ConsentPromptBehaviorAdmin" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Services\Tcpip6\Parameters" /v "DisabledComponents" /t REG_DWORD /d "255" /f
  • '<SYSTEM32>\reg.exe' delete "HKCU\System\GameConfigStore\Parents" /f
  • '<SYSTEM32>\reg.exe' delete "HKCU\System\GameConfigStore\Children" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings" /v "DownloadMode" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\mouclass\Parameters" /v "MouseDataQueueSize" /t REG_DWORD /d "16" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Services\kbdclass\Parameters" /v "KeyboardDataQueueSize" /t REG_DWORD /d "16" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\SQMClient" /v "CorporateSQMURL" /t REG_SZ /d "0.0.0.0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\SQMClient\Windows" /v "CEIPEnable" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Control\WMI\AutoLogger\SQMLogger" /v "Start" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\System\CurrentControlSet\Control\WMI\AutoLogger\AutoLogger-Diagtrack-Listener" /v "Start" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Privacy" /v "TailoredExperiencesWithDiagnosticDataEnabled" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WUDF" /v "LogLevel" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\ContentDeliveryManager" /v "SubscribedContent-338389Enabled" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WUDF" /v "LogEnable" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Policies\Microsoft\Windows\CloudContent" /v "DisableWindowsConsumerFeatures" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "TaskbarAnimations" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "ListviewShadow" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "ListviewAlphaSelect" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "IconsOnly" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer" /v "ShellState" /t REG_BINARY /d "240000003E28000000000000000000000000000001000000130000000000000072000000" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop\WindowMetrics" /v "MinAnimate" /t REG_SZ /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "UserPreferencesMask" /t REG_BINARY /d "9012038010020000" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "FontSmoothing" /t REG_SZ /d "2" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "DragFullWindows" /t REG_SZ /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VisualEffects" /v "VisualFXSetting" /t REG_DWORD /d "3" /f
  • '<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate" /v "ExcludeWUDriversInQualityUpdate" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "PromptOnSecureDesktop" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\Control Panel\Desktop" /v "AutoEndTasks" /t REG_SZ /d "1" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\System\GameConfigStore" /v "GameDVR_EFSEFeatureFlags" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\System\GameConfigStore" /v "GameDVR_DXGIHonorFSEWindowsCompatible" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\bcdedit.exe' /set isolatedcontext No
  • '<SYSTEM32>\bcdedit.exe' /set allowedinmemorysettings 0x0
  • '<SYSTEM32>\bcdedit.exe' /set nolowmem Yes
  • '<SYSTEM32>\bcdedit.exe' /set avoidlowmemory 0x8000000
  • '<SYSTEM32>\bcdedit.exe' /set firstmegabytepolicy UseAll
  • '<SYSTEM32>\bcdedit.exe' /set increaseuserva 268435328
  • '<SYSTEM32>\bcdedit.exe' /set linearaddress57 OptOut
  • '<SYSTEM32>\bcdedit.exe' /set {globalsettings} custom:16000068 true
  • '<SYSTEM32>\bcdedit.exe' /set {globalsettings} custom:16000069 true
  • '<SYSTEM32>\bcdedit.exe' /set {globalsettings} custom:16000067 true
  • '<SYSTEM32>\bcdedit.exe' /set quietboot yes
  • '<SYSTEM32>\bcdedit.exe' /set tpmbootentropy ForceDisable
  • '<SYSTEM32>\bcdedit.exe' /set hypervisorlaunchtype off
  • '<SYSTEM32>\bcdedit.exe' /set bootmenupolicy standard
  • '<SYSTEM32>\bcdedit.exe' /set bootux disabled
  • '<SYSTEM32>\bcdedit.exe' /set nx optout
  • '<SYSTEM32>\bcdedit.exe' /timeout 0
  • '<SYSTEM32>\bcdedit.exe' /set useplatformtick yes
  • '<SYSTEM32>\bcdedit.exe' /set disabledynamictick yes
  • '<SYSTEM32>\net1.exe' start WManSvc
  • '<SYSTEM32>\net.exe' start WManSvc
  • '<SYSTEM32>\net1.exe' start Winmgmt
  • '<SYSTEM32>\net.exe' start Winmgmt
  • '<SYSTEM32>\sc.exe' config WManSvc start=demand
  • '<SYSTEM32>\sc.exe' config Winmgmt start=demand
  • '<SYSTEM32>\net1.exe' stop WManSvc
  • '<SYSTEM32>\net1.exe' stop Winmgmt /y
  • '<SYSTEM32>\bcdedit.exe' /set vsmlaunchtype Off
  • '<SYSTEM32>\bcdedit.exe' /set vm No
  • '<SYSTEM32>\bcdedit.exe' /set configaccesspolicy Default
  • '<SYSTEM32>\bcdedit.exe' /set MSI Default
  • '<SYSTEM32>\reg.exe' add "HKCU\System\GameConfigStore" /v "GameDVR_FSEBehaviorMode" /t REG_DWORD /d "2" /f
  • '<SYSTEM32>\reg.exe' add "HKCU\System\GameConfigStore" /v "GameDVR_Enabled" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "SFIO Priority" /t REG_SZ /d "High" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Scheduling Category" /t REG_SZ /d "High" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Priority" /t REG_DWORD /d "6" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "GPU Priority" /t REG_DWORD /d "8" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Clock Rate" /t REG_DWORD /d "10000" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Background Only" /t REG_SZ /d "False" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games" /v "Affinity" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile" /v "SystemResponsiveness" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile" /v "NetworkThrottlingIndex" /t REG_DWORD /d "10" /f
  • '<SYSTEM32>\reg.exe' add "HKLM\SYSTEM\CurrentControlSet\Control\Power\PowerThrottling" /v "PowerThrottlingOff" /t REG_DWORD /d "1" /f
  • '<SYSTEM32>\netsh.exe' int ipv4 set dynamicport udp start=1025 num=64511
  • '<SYSTEM32>\netsh.exe' int tcp set security profiles=disabled
  • '<SYSTEM32>\netsh.exe' int ipv4 set dynamicport tcp start=1025 num=64511
  • '<SYSTEM32>\netsh.exe' int tcp set security mpp=disabled
  • '<SYSTEM32>\netsh.exe' int tcp set heuristics wsh=disabled
  • '<SYSTEM32>\netsh.exe' int tcp set heuristics disabled
  • '<SYSTEM32>\netsh.exe' int tcp set global rsc=disabled
  • '<SYSTEM32>\netsh.exe' int ip set global mldlevel=none
  • '<SYSTEM32>\netsh.exe' int ip set global mediasenseeventlog=disabled
  • '<SYSTEM32>\netsh.exe' int ip set global dhcpmediasense=disabled
  • '<SYSTEM32>\netsh.exe' int ip set global taskoffload=disabled
  • '<SYSTEM32>\netsh.exe' int ip set global sourceroutingbehavior=drop
  • '<SYSTEM32>\netsh.exe' int ip set global routecachelimit=4096
  • '<SYSTEM32>\netsh.exe' int ip set global neighborcachelimit=4096
  • '<SYSTEM32>\bcdedit.exe' /set usefirmwarepcisettings No
  • '<SYSTEM32>\bcdedit.exe' /set usephysicaldestination No
  • '<SYSTEM32>\reg.exe' add "HKCU\System\GameConfigStore" /v "GameDVR_HonorUserFSEBehaviorMode" /t REG_DWORD /d "0" /f
  • '<SYSTEM32>\gpupdate.exe' /force

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

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