TSPY_YUNSIP.OPX
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It modifies the Internet Explorer Zone Settings.
It deletes itself after execution.
TECHNICAL DETAILS
31,232 bytes
EXE
Yes
06 Sep 2013
Arrival Details
This spyware 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 spyware drops the following files:
- %System%\Windowsxp.ini
- %System%\64to32.dll
- %System%\Windows32.dll
- %System%\Windowsxp32.ini
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Autostart Technique
This spyware registers its dropped component as a system service to ensure its automatic execution at every system startup. It does this by creating the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_64TO32
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\64to32
Other System Modifications
This spyware adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{6E28339B-7A2A-47B6-AEB2-46BA53782379}
HKEY_CLASSES_ROOT\CLSID\{E92B03AB-A707-11d2-9CBD-0000F87A369H}
HKEY_CLASSES_ROOT\CLSID\{E9C0568A-0146-9ACE-2347-9ACE13568ABD}
HKEY_CLASSES_ROOT\Interface\{4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
HKEY_CLASSES_ROOT\TypeLib\{A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{6E28339B-7A2A-47B6-AEB2-46BA53782379}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E92B03AB-A707-11d2-9CBD-0000F87A369H}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{E9C0568A-0146-9ACE-2347-9ACE13568ABD}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{6E28339B-7A2A-47B6-AEB2-46BA53782379}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{E92B03AB-A707-11d2-9CBD-0000F87A369H}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{E9C0568A-0146-9ACE-2347-9ACE13568ABD}
HKEY_CLASSES_ROOT\BhoPlugin.EyeOnIE.1
HKEY_LOCAL_MACHINE\BhoPlugin.EyeOnIE
HKEY_LOCAL_MACHINE\BhoPlugin.EyeOnIE.1
HKEY_CLASSES_ROOT\BhoPlugin.EyeOnIE
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Windows
AppInit_DLLs = "Windows32"
(Note: The default value data of the said registry entry is "".)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\SvcHost
netsvcs = "{original list of service names} 64to32"
(Note: The default value data of the said registry entry is {original list of service names}.)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\Session Manager
ExcludeFromKnownDlls = "usp10.dll"
(Note: The default value data of the said registry entry is "".)
Web Browser Home Page and Search Page Modification
This spyware modifies the Internet Explorer Zone Settings.
Other Details
This spyware connects to the following possibly malicious URL:
- http://do.{BLOCKED}8.com/main/m0816.txt
- http://x3.{BLOCKED}9.com/ico/m816.exe
- http://{BLOCKED}.160.149/wpad.dat
- http://host.{BLOCKED}6.com/main/main0816.txt
- http://sub.{BLOCKED}5.com/ico/main816.exe
It deletes itself after execution.
NOTES:
This spyware drops the following file in every folder in the system:
- usp10.dll
SOLUTION
9.300
10.274.04
11 Sep 2013
10.275.00
11 Sep 2013
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
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\Enum\Root
- LEGACY_64TO32
- LEGACY_64TO32
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- 64to32
- 64to32
- In HKEY_CLASSES_ROOT\CLSID
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- In HKEY_CLASSES_ROOT\CLSID
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- In HKEY_CLASSES_ROOT\CLSID
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- In HKEY_CLASSES_ROOT\Interface
- {4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
- {4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
- In HKEY_CLASSES_ROOT\TypeLib
- {A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
- {A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
- {4CF9A0D2-ED75-40CB-98C0-36DF6A30E040}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
- {A2D5957F-6D1A-44CE-BFBA-D448EAAB8781}
- In HKEY_LOCAL_MACHINE\SOFTWARE\MicrosoftWindows\CurrentVersion\Explorer\Browser Helper Objects
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- {6E28339B-7A2A-47B6-AEB2-46BA53782379}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- {E92B03AB-A707-11d2-9CBD-0000F87A369H}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- {E9C0568A-0146-9ACE-2347-9ACE13568ABD}
- In HKEY_CLASSES_ROOT
- BhoPlugin.EyeOnIE.1
- BhoPlugin.EyeOnIE.1
- In HKEY_LOCAL_MACHINE
- BhoPlugin.EyeOnIE
- BhoPlugin.EyeOnIE
- In HKEY_LOCAL_MACHINE
- BhoPlugin.EyeOnIE.1
- BhoPlugin.EyeOnIE.1
- In HKEY_CLASSES_ROOT
- BhoPlugin.EyeOnIE
- BhoPlugin.EyeOnIE
Step 4
Restore this modified 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\Windows NT\CurrentVersion\Windows
- From: AppInit_DLLs = "Windows32"
To: AppInit_DLLs = ""
- From: AppInit_DLLs = "Windows32"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
- From: ExcludeFromKnownDlls = "usp10.dll"
To: ExcludeFromKnownDlls = ""
- From: ExcludeFromKnownDlls = "usp10.dll"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SvcHost
- From: netsvcs = "{original list of service names} 64to32"
To: netsvcs = "{original list of service names}"
- From: netsvcs = "{original list of service names} 64to32"
Step 5
Search and delete these files
- %System%\Windowsxp.ini
- %System%\64to32.dll
- %System%\Windows32.dll
- %System%\Windowsxp32.ini
Step 6
Reset Internet security settings
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_YUNSIP.OPX. 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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