TROJ_ONLINEG.OPE
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
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.
It deletes itself after execution.
TECHNICAL DETAILS
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.
Autostart Technique
This Trojan registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
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\64to32\Parameters
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\Version
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}\TypeLib
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\64to32
Description = "applications to access the local Intel(R) Management and Security"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\64to32\Parameters
ServiceDll = "%System%\64to32.dll"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
NoExplorer = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}\TypeLib
Version = "1.0"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Session Manager
ExcludeFromKnownDlls = "usp10.dll"
(Note: The default value data of the said registry entry is {random values}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SvcHost
netsvcs = "{random characters}"
(Note: The default value data of the said registry entry is {random values}.)
Dropping Routine
This Trojan drops the following files:
- %System%\64to32.dll
- %Temp%\rCD1dAMy.pif
- %Temp%\VkfZW448.pif
- %System%\Windows32.dll
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://aug.{BLOCKED}9.com/ico/m829.exe
- http://about.{BLOCKED}5.com/ico/main816.exe
- http://do.{BLOCKED}8.com/main/m0816.txt
- http://host.{BLOCKED}6.com/main/main0816.txt
It deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
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
Restart in Safe Mode
Step 3
Close all opened browser windows
Step 4
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\64to32
- Parameters
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {E3C2200E-C290-4F51-A0F4-D945A27746EA}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
- Version
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DD4DE43B-ADD5-4DF8-8974-1DEC722F3E1F}\1.0
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}
- TypeLib
Step 5
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\SYSTEM\ControlSet001\Services\64to32
- Description = "applications to access the local Intel(R) Management and Security"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\64to32\Parameters
- ServiceDll = "%System%\64to32.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{E3C2200E-C290-4F51-A0F4-D945A27746EA}\InprocServer32
- ThreadingModel = "Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{E3C2200E-C290-4F51-A0F4-D945A27746EA}
- NoExplorer = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{C58A99D3-A64E-4A72-AEB8-E3DEF8B307EC}\TypeLib
- Version = "1.0"
Step 6
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\Session Manager
- From: ExcludeFromKnownDlls = "usp10.dll"
To: ExcludeFromKnownDlls = ""{random values}""
- From: ExcludeFromKnownDlls = "usp10.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SvcHost
- From: netsvcs = "{random characters}"
To: netsvcs = ""{random values}""
- From: netsvcs = "{random characters}"
Step 7
Search and delete these components
- %System%\64to32.dll
- %Temp%\rCD1dAMy.pif
- %Temp%\VkfZW448.pif
- %System%\Windows32.dll
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_ONLINEG.OPE. 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.
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