TROJ_ANTAVMU.CP
Backdoor:Win32/Beksnoc.A (Microsoft); Packed-AB!89F55866CE43 (McAfee); Trojan.ADH (Symantec); Trojan.Win32.Antavmu.ubb (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Generic31.BFUH (AVG)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
126,538 bytes
EXE
Yes
02 Apr 2013
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Trojan drops the following copies of itself into the affected system:
- %System%\msuqxstd.exe
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
It creates the following folders:
- %Temp%\btw_5159c340
- %Temp%\mpk_5159c364
- %User Profile%\Application Data\MPK
- %User Profile%\MPK\CPDM
- %User Profile%\MPK\CPDA
- %User Profile%\MPK\1
- %User Profile%\1\HCAL
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Autostart Technique
This Trojan modifies the following registry entries to ensure it automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
userinit = "%System%\userinit.exe,%User Profile%\MPK\mpk.exe,"
(Note: The default value data of the said registry entry is %Windows%\system32\userinit.exe,.)
It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinVideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinVideo\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinVideo\Video
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinVideo\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinSystem
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinSystem\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinSystem\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinMouse
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinMouse\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinKeyboard
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinKeyboard\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\BeTwinDD
Other System Modifications
This Trojan deletes the following files:
- %User Profile%\MPK\M0000-journal
- %User Profile%\1\D0000-journal
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
It adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
TermServMonitor
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\ThinComputingInc\BeTwin
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\ThinComputingInc\BeTwin\
BTS#0
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\ThinComputingInc\BeTwin\
Diagnostics
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
TermServMonitor
SetupName2 = "
¼ÚÛ®¥¡¶Ó¶«Õ×Ñ»"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon\
SpecialAccounts\UserList
SUPPORT_8712 = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Terminal Server
IgnoreRegUserConfigErrors = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Terminal Server\Licensing Core
EnableConcurrentSessions = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
TermServMonitor
btw = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
TermServMonitor
mpk = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin
EnableRDP = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin
ClearCubeMax = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin
SoftwareRevisionLevel = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin
RdpRevisionLevel = "45"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin
limitblankpassworduseforrdpclient = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Lsa
limitblankpassworduseforrdpclient = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin\
BTS#0
ClassGUID = "{8dd21b99-9a46-4f0f-b18f-4bd786caf9ee}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\ThinComputingInc\BeTwin\
BTS#0
DeviceReference = "886719"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo
Group = "Video Init"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo
Start = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo
ImagePath = "System32\drivers\BeTwinVF.sys"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
DualViewPrimaryDisplay = "\Device\Video0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
DualViewSecondaryDisplay = "\Device\Video1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
DisableVgaDriver = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
PriorityBoost = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
AllowHostAccess = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
HookDisplayDriver = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Parameters
EnableWDDM = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Video
Service = "BeTwinVideo"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Video
VideoID = "{DC22CEA6-4768-11DF-A8FC-806D6172696F}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Enum
0 = "Root\LEGACY_BETWINVIDEO\0000"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Enum
Count = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinVideo\Enum
NextInstance = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem
ImagePath = "System32\Drivers\BeTwinSystem.sys"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem
Group = "BeTwin"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem
Start = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem\Enum
0 = "Root\LEGACY_BETWINSYSTEM\0000"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem\Enum
Count = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinSystem\Enum
NextInstance = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinMouse
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinMouse
Group = "Base"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinMouse
Start = "3"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinMouse
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinMouse
ImagePath = "System32\drivers\BeTwinMF.sys"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinKeyboard
ErrorControl = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinKeyboard
Group = "Base"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinKeyboard
Start = "3"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinKeyboard
Type = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\BeTwinKeyboard
ImagePath = "System32\drivers\BeTwinKF.sys"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
GinaDLL = "xtgina.dll"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Terminal Server
TSEnabled = "1"
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Terminal Server
fAllowToGetHelp = "1"
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Terminal Server
fDenyTSConnections = "0"
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
Start = "2"
(Note: The default value data of the said registry entry is 3.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Lsa
limitblankpassworduse = "0"
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
ErrorControl = "1"
(Note: The default value data of the said registry entry is 1.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
ObjectName = "LocalSystem"
(Note: The default value data of the said registry entry is LocalSystem.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
DependOnService = "RPCSS"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
Type = "1"
(Note: The default value data of the said registry entry is 20.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService
ImagePath = "System32\BeTwinServiceXP.exe"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Parameters
ServiceDll = "%SystemRoot%\System32\termsrv.dll"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Close = "CloseTSObject"
(Note: The default value data of the said registry entry is CloseTSObject.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Collect Timeout = "3e8"
(Note: The default value data of the said registry entry is 3e8.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Collect = "CollectTSObjectData"
(Note: The default value data of the said registry entry is CollectTSObjectData.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Open Timeout = "3e8"
(Note: The default value data of the said registry entry is 3e8.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Open = "OpenTSObject"
(Note: The default value data of the said registry entry is OpenTSObject.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Library = "perfts.dll"
(Note: The default value data of the said registry entry is perfts.dll.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Last Counter = "886"
(Note: The default value data of the said registry entry is 886.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Last Help = "887"
(Note: The default value data of the said registry entry is 887.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
First Counter = "86"
(Note: The default value data of the said registry entry is 806.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
First Help = "87"
(Note: The default value data of the said registry entry is 807.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Object List = "2054 2176 2054 2176"
(Note: The default value data of the said registry entry is 2054 2176.)
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\TermService\Performance
Library Validation Code = "{random values}"
(Note: The default value data of the said registry entry is {random values}.)
Dropping Routine
This Trojan drops the following files:
- %Temp%\wf1.tmp
- %Temp%\btw_5159c340\1.tmp
- %Temp%\btw_5159c340\2.tmp
- %Temp%\btw_5159c340\3.tmp
- %Temp%\btw_5159c340\4.tmp
- %Temp%\btw_5159c340\5.tmp
- %Temp%\btw_5159c340\6.tmp
- %Temp%\btw_5159c340\7.tmp
- %Temp%\btw_5159c340\8.tmp
- %Temp%\btw_5159c340\9.tmp
- %Temp%\btw_5159c340\10.tmp
- %Temp%\wf2.tmp
- %Temp%\mpk_5159c364\1.tmp
- %Temp%\mpk_5159c364\2.tmp
- %Temp%\mpk_5159c364\3.tmp
- %Temp%\mpk_5159c364\4.tmp
- %Temp%\mpk_5159c364\5.tmp
- %Temp%\mpk_5159c364\6.tmp
- %User Profile%\MPK\etilqs_mgtMC000VbbT4QLmVTXh
- %System%\drivers\betwinkf.sys
- %System%\drivers\betwinmf.sys
- %System%\drivers\betwinvf.sys
- %System%\drivers\betwinsystem.sys
- %System%\slsapi.dll
- %System%\betwinservicexp.exe
- %System%\xtgina.dll
- %System%\winscard32.dll
- %System%\winscard.dll
- %User Profile%\MPK\s0000
- %User Profile%\MPK\mpk.exe
- %User Profile%\MPK\mpk.dll
- %User Profile%\MPK\key.bin
- %User Profile%\MPK\sqlite3.dll
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.)
Other Details
This Trojan connects to the following possibly malicious URL:
This report is generated via an automated analysis system.
SOLUTION
9.300
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and delete files detected as TROJ_ANTAVMU.CP using either the Startup Disk or Recovery Console
Step 3
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- BeTwinVideo
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinVideo
- Parameters
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinVideo
- Video
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinVideo
- Enum
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- BeTwinSystem
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinSystem
- Enum
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinSystem
- Parameters
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- BeTwinMouse
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinMouse
- Parameters
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- BeTwinKeyboard
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BeTwinKeyboard
- Parameters
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- BeTwinDD
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft
- TermServMonitor
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ThinComputingInc
- BeTwin
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ThinComputingInc\BeTwin
- BTS#0
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ThinComputingInc\BeTwin
- Diagnostics
Step 4
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\TermServMonitor
- SetupName2 = " ¼ÚÛ®¥¡¶Ó¶«Õ×Ñ»"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList
- SUPPORT_8712 = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server
- IgnoreRegUserConfigErrors = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server\Licensing Core
- EnableConcurrentSessions = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\TermServMonitor
- btw = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\TermServMonitor
- mpk = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin
- EnableRDP = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin
- ClearCubeMax = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin
- SoftwareRevisionLevel = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin
- RdpRevisionLevel = "45"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin
- limitblankpassworduseforrdpclient = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa
- limitblankpassworduseforrdpclient = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin\BTS#0
- ClassGUID = "{8dd21b99-9a46-4f0f-b18f-4bd786caf9ee}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ThinComputingInc\BeTwin\BTS#0
- DeviceReference = "886719"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo
- ErrorControl = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo
- Group = "Video Init"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo
- Start = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo
- Type = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo
- ImagePath = "System32\drivers\BeTwinVF.sys"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- DualViewPrimaryDisplay = "\Device\Video0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- DualViewSecondaryDisplay = "\Device\Video1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- DisableVgaDriver = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- PriorityBoost = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- AllowHostAccess = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- HookDisplayDriver = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Parameters
- EnableWDDM = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Video
- Service = "BeTwinVideo"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Video
- VideoID = "{DC22CEA6-4768-11DF-A8FC-806D6172696F}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Enum
- 0 = "Root\LEGACY_BETWINVIDEO\0000"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Enum
- Count = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinVideo\Enum
- NextInstance = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem
- ImagePath = "System32\Drivers\BeTwinSystem.sys"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem
- ErrorControl = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem
- Group = "BeTwin"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem
- Start = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem
- Type = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem\Enum
- 0 = "Root\LEGACY_BETWINSYSTEM\0000"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem\Enum
- Count = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinSystem\Enum
- NextInstance = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinMouse
- ErrorControl = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinMouse
- Group = "Base"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinMouse
- Start = "3"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinMouse
- Type = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinMouse
- ImagePath = "System32\drivers\BeTwinMF.sys"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinKeyboard
- ErrorControl = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinKeyboard
- Group = "Base"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinKeyboard
- Start = "3"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinKeyboard
- Type = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\BeTwinKeyboard
- ImagePath = "System32\drivers\BeTwinKF.sys"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- GinaDLL = "xtgina.dll"
Step 5
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server
- From: TSEnabled = "1"
To: TSEnabled = ""1""
- From: TSEnabled = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server
- From: fAllowToGetHelp = "1"
To: fAllowToGetHelp = ""1""
- From: fAllowToGetHelp = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Terminal Server
- From: fDenyTSConnections = "0"
To: fDenyTSConnections = ""1""
- From: fDenyTSConnections = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: Start = "2"
To: Start = ""3""
- From: Start = "2"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Lsa
- From: limitblankpassworduse = "0"
To: limitblankpassworduse = ""1""
- From: limitblankpassworduse = "0"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: ErrorControl = "1"
To: ErrorControl = ""1""
- From: ErrorControl = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: ObjectName = "LocalSystem"
To: ObjectName = ""LocalSystem""
- From: ObjectName = "LocalSystem"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: DependOnService = "RPCSS"
To: DependOnService = ""{random values}""
- From: DependOnService = "RPCSS"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: Type = "1"
To: Type = ""20""
- From: Type = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService
- From: ImagePath = "System32\BeTwinServiceXP.exe"
To: ImagePath = ""{random values}""
- From: ImagePath = "System32\BeTwinServiceXP.exe"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Parameters
- From: ServiceDll = "%SystemRoot%\System32\termsrv.dll"
To: ServiceDll = ""{random values}""
- From: ServiceDll = "%SystemRoot%\System32\termsrv.dll"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Close = "CloseTSObject"
To: Close = ""CloseTSObject""
- From: Close = "CloseTSObject"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Collect Timeout = "3e8"
To: Collect Timeout = ""3e8""
- From: Collect Timeout = "3e8"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Collect = "CollectTSObjectData"
To: Collect = ""CollectTSObjectData""
- From: Collect = "CollectTSObjectData"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Open Timeout = "3e8"
To: Open Timeout = ""3e8""
- From: Open Timeout = "3e8"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Open = "OpenTSObject"
To: Open = ""OpenTSObject""
- From: Open = "OpenTSObject"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Library = "perfts.dll"
To: Library = ""perfts.dll""
- From: Library = "perfts.dll"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Last Counter = "886"
To: Last Counter = ""886""
- From: Last Counter = "886"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Last Help = "887"
To: Last Help = ""887""
- From: Last Help = "887"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: First Counter = "86"
To: First Counter = ""806""
- From: First Counter = "86"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: First Help = "87"
To: First Help = ""807""
- From: First Help = "87"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Object List = "2054 2176 2054 2176"
To: Object List = ""2054 2176""
- From: Object List = "2054 2176 2054 2176"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\TermService\Performance
- From: Library Validation Code = "{random values}"
To: Library Validation Code = ""{random values}""
- From: Library Validation Code = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
- From: userinit = "%System%\userinit.exe,%User Profile%\MPK\mpk.exe,"
To: userinit = ""%Windows%\system32\userinit.exe,""
- From: userinit = "%System%\userinit.exe,%User Profile%\MPK\mpk.exe,"
Step 6
Search and delete these components
- %Temp%\wf1.tmp
- %Temp%\btw_5159c340\1.tmp
- %Temp%\btw_5159c340\2.tmp
- %Temp%\btw_5159c340\3.tmp
- %Temp%\btw_5159c340\4.tmp
- %Temp%\btw_5159c340\5.tmp
- %Temp%\btw_5159c340\6.tmp
- %Temp%\btw_5159c340\7.tmp
- %Temp%\btw_5159c340\8.tmp
- %Temp%\btw_5159c340\9.tmp
- %Temp%\btw_5159c340\10.tmp
- %Temp%\wf2.tmp
- %Temp%\mpk_5159c364\1.tmp
- %Temp%\mpk_5159c364\2.tmp
- %Temp%\mpk_5159c364\3.tmp
- %Temp%\mpk_5159c364\4.tmp
- %Temp%\mpk_5159c364\5.tmp
- %Temp%\mpk_5159c364\6.tmp
- %User Profile%\MPK\etilqs_mgtMC000VbbT4QLmVTXh
- %System%\drivers\betwinkf.sys
- %System%\drivers\betwinmf.sys
- %System%\drivers\betwinvf.sys
- %System%\drivers\betwinsystem.sys
- %System%\slsapi.dll
- %System%\betwinservicexp.exe
- %System%\xtgina.dll
- %System%\winscard32.dll
- %System%\winscard.dll
- %User Profile%\MPK\s0000
- %User Profile%\MPK\mpk.exe
- %User Profile%\MPK\mpk.dll
- %User Profile%\MPK\key.bin
- %User Profile%\MPK\sqlite3.dll
Step 7
Search and delete these folders
- %Temp%\btw_5159c340
- %Temp%\mpk_5159c364
- %User Profile%\Application Data\MPK
- %User Profile%\MPK\CPDM
- %User Profile%\MPK\CPDA
- %User Profile%\MPK\1
- %User Profile%\1\HCAL
Step 8
Scan your computer with your Trend Micro product to delete files detected as TROJ_ANTAVMU.CP. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
Step 9
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %User Profile%\MPK\M0000-journal
- %User Profile%\1\D0000-journal
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