ALIASES:

Generic.grp!eb (McAfee); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Generic.KD.385366 (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • 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

File Size: 237,568 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 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

Minimum Scan Engine: 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

[ Learn More ]

Step 3

Delete this registry key

[ Learn More ]

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

[ Learn More ]

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

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %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

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %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


Did this description help? Tell us how we did.