TROJ_DLOADR.BDN
Generic.grp!eb (McAfee); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Generic.KD.385366 (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
237,568 bytes
EXE
Yes
17 May 2012
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 creates the following folders:
- %Program Files%\clipview
- %User Temp%\is-86TUK.tmp
- %User Temp%\is-MN3AD.tmp
- %User Temp%\is-MN3AD.tmp\_isetup
- %Program Files%\clipview\temp
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
clipview = "%Program Files%\clipview\clipview.exe"
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Inno Setup: Setup Version = "5.4.2 (a)"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Inno Setup: App Path = "%Program Files%\clipview"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
InstallLocation = "%Program Files%\clipview"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Inno Setup: Icon Group = "ClipView"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Inno Setup: User = "Administrator"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Inno Setup: Language = "default"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
DisplayName = "clipview v1.0"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
UninstallString = "%Program Files%\clipview\unins000.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
QuietUninstallString = "%Program Files%\clipview\unins000.exe /SILENT"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
DisplayVersion = "1.01"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Publisher = "ClipView, Inc."
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
NoModify = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
NoRepair = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
InstallDate = "20120516"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
MajorVersion = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
MinorVersion = "1"
It deletes the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
ClipView_is1
Dropping Routine
This Trojan drops the following files:
- %Program Files%\clipview\clipview_setup.exe
- %User Temp%\is-86TUK.tmp\clipview_setup.tmp
- %User Temp%\is-MN3AD.tmp\_isetup\_RegDLL.tmp
- %User Temp%\is-MN3AD.tmp\_isetup\_shfoldr.dll
- %Program Files%\clipview\unins000.dat
- %Program Files%\clipview\is-TLJA0.tmp
- %Program Files%\clipview\is-ACI86.tmp
- %Program Files%\clipview\is-F000B.tmp
- %Program Files%\clipview\is-7DBVB.tmp
- %Program Files%\clipview\is-PRJPN.tmp
- %Program Files%\clipview\temp\is-F2UPP.tmp
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.. %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.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}ew.com/clipview/clipview.php
- http://{BLOCKED}ew.com/clipview/clipview_setup.exe
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
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\Software\Microsoft\Windows\CurrentVersion\Uninstall
- ClipView_is1
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- clipview = "%Program Files%\clipview\clipview.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Inno Setup: Setup Version = "5.4.2 (a)"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Inno Setup: App Path = "%Program Files%\clipview"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- InstallLocation = "%Program Files%\clipview"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Inno Setup: Icon Group = "ClipView"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Inno Setup: User = "Administrator"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Inno Setup: Language = "default"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- DisplayName = "clipview v1.0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- UninstallString = "%Program Files%\clipview\unins000.exe"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- QuietUninstallString = "%Program Files%\clipview\unins000.exe /SILENT"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- DisplayVersion = "1.01"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- Publisher = "ClipView, Inc."
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- NoModify = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- NoRepair = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- InstallDate = "20120516"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- MajorVersion = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClipView_is1
- MinorVersion = "1"
Step 5
Search and delete these files
- %Program Files%\clipview\clipview_setup.exe
- %User Temp%\is-86TUK.tmp\clipview_setup.tmp
- %User Temp%\is-MN3AD.tmp\_isetup\_RegDLL.tmp
- %User Temp%\is-MN3AD.tmp\_isetup\_shfoldr.dll
- %Program Files%\clipview\unins000.dat
- %Program Files%\clipview\is-TLJA0.tmp
- %Program Files%\clipview\is-ACI86.tmp
- %Program Files%\clipview\is-F000B.tmp
- %Program Files%\clipview\is-7DBVB.tmp
- %Program Files%\clipview\is-PRJPN.tmp
- %Program Files%\clipview\temp\is-F2UPP.tmp
Step 6
Search and delete these folders
- %Program Files%\clipview
- %User Temp%\is-86TUK.tmp
- %User Temp%\is-MN3AD.tmp
- %User Temp%\is-MN3AD.tmp\_isetup
- %Program Files%\clipview\temp
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DLOADR.BDN. 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 8
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall
- ClipView_is1
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