TROJ_CLIBGOB.SMI
TrojanDropper:Win32/Clibgov.A (Microsoft); Generic Dropper!dtk (McAfee); Adware.Links, VBS.StartPage (Symantec); Trojan-Downloader.Win32.VB.zeo (Kaspersky); Gen:Trojan.Heur.VP.fm0@aK@6m3ib (FSecure)
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
86,016 bytes
EXE
No
23 Nov 2011
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.
Other System Modifications
This Trojan deletes the following files:
- %User Temp%\ie.reg
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
It adds the following registry keys:
HKEY_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\
shellex
HKEY_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\
shellex\ContextMenuHandlers
HKEY_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\
shellex\ContextMenuHandlers\ieframe
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
InProcServer32
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
Instance
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
Instance\InitPropertyBag
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
shellex
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
shellex\ContextMenuHandlers
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
shellex\ContextMenuHandlers\{1f4de370-ba4f-11d1-d627-00a0c91eedba}
HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\
shellex\MayChangeDefaultMenu
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
DefaultIcon
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
Shell
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
Shell\Open(&O)
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
Shell\Open(&O)\Command
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
Shell\ÊôÐÔ(&R)
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
Shell\ÊôÐÔ(&R)\Command
HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
ShellFolder
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\DefaultIcon
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\
Open(&O)
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\
Open(&O)\Command
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\
ÊôÐÔ(&R)
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\
ÊôÐÔ(&R)\Command
HKEY_CURRENT_USER\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\ShellFolder
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Desktop\NameSpace\{C42EB5A1-0EED-E549-91B0-775852013521}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Toolbar\WebBrowser
ITBar7Layout = {random values}
HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Toolbar\WebBrowser
ITBarLayout = {random values}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
InfoTip = "ÌØÂô"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\InProcServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance
CLSID = "{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\
InitPropertyBag
CLSID = "{13709620-C279-11CE-A49E-444553540000}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\
InitPropertyBag
command = "´ò¿ª(&O)"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\
InitPropertyBag
method = "ShellExecute"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\
InitPropertyBag
Param1 = "http://%77%77%77%2e%31%39%38%33%30%39%2e%63%6f%6d"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\
InitPropertyBag
Param2 = "%ProgramFiles%\Internet Explorer\iexplore.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\ShellFolder
Attributes = a
HKEY_CURRENT_USER\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\
ShellFolder
Attributes = a
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
LocalizedString = "Internet Explorer"
(Note: The default value data of the said registry entry is @%SystemRoot%\system32\SHELL32.dll,-30521.)
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\InProcServer32
ThreadingModel = "Apartment"
(Note: The default value data of the said registry entry is Apartment.)
Dropping Routine
This Trojan drops the following files:
- %User Temp%\360safe.vbs
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
This report is generated via an automated analysis system.
SOLUTION
9.200
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
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_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
- shellex
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\shellex
- ContextMenuHandlers
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\shellex\ContextMenuHandlers
- ieframe
- In HKEY_CLASSES_ROOT\CLSID
- {1f4de370-ba4f-11d1-d627-00a0c91eedba}
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}
- InProcServer32
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}
- Instance
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance
- InitPropertyBag
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}
- shellex
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\shellex
- ContextMenuHandlers
- In HKEY_CLASSES_ROOT\CLSID\shellex\ContextMenuHandlers
- {1f4de370-ba4f-11d1-d627-00a0c91eedba}
- In HKEY_CLASSES_ROOT\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\shellex
- MayChangeDefaultMenu
- In HKEY_CLASSES_ROOT\CLSID
- {C42EB5A1-0EED-E549-91B0-775852013521}
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- DefaultIcon
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- Shell
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell
- Open(&O)
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\Open(&O)
- Command
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell
- ÊôÐÔ(&R)
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\ÊôÐÔ(&R)
- Command
- In HKEY_CLASSES_ROOT\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- ShellFolder
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID
- {C42EB5A1-0EED-E549-91B0-775852013521}
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- DefaultIcon
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- Shell
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell
- Open(&O)
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\Open(&O)
- Command
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell
- ÊôÐÔ(&R)
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\Shell\ÊôÐÔ(&R)
- Command
- In HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}
- ShellFolder
- In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
- {C42EB5A1-0EED-E549-91B0-775852013521}
Step 3
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_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser
- ITBar7Layout={random values}
- In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser
- ITBarLayout={random values}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
- InfoTip="ÌØÂô"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\InProcServer32
- ThreadingModel="Apartment"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance
- CLSID="{3f454f0e-42ae-4d7c-8ea3-328250d6e272}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\InitPropertyBag
- CLSID="{13709620-C279-11CE-A49E-444553540000}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\InitPropertyBag
- command="´ò¿ª(&O)"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\InitPropertyBag
- method="ShellExecute"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\InitPropertyBag
- Param1="http://%77%77%77%2e%31%39%38%33%30%39%2e%63%6f%6d"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-ba4f-11d1-d627-00a0c91eedba}\Instance\InitPropertyBag
- Param2="%ProgramFiles%\Internet Explorer\iexplore.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\ShellFolder
- Attributes=a
- In HKEY_CURRENT_USER\CLSID\{C42EB5A1-0EED-E549-91B0-775852013521}\ShellFolder
- Attributes=a
Step 4
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\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
- From: LocalizedString="Internet Explorer"
To: LocalizedString=@%SystemRoot%\system32\SHELL32.dll,-30521
- From: LocalizedString="Internet Explorer"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\InProcServer32
- From: ThreadingModel="Apartment"
To: ThreadingModel=Apartment
- From: ThreadingModel="Apartment"
Step 5
Search and delete this file
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_CLIBGOB.SMI. 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 7
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 Temp%\ie.reg
Did this description help? Tell us how we did.