TROJ_BHO.TG


 ALIASES:

Rogue:Win32/Winwebsec, Trojan:Win32/Zlob.U (Microsoft); [2.nsis]:Generic PUP.x., [3.nsis\00005b68.EXE]:Puper (McAfee); AdwareRemover2007, Trojan.Zlob (Symantec); Trojan-FakeAV.Win32.TotalSecure2009.e (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan horse FakeAlert.BS (AVG)

 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:

969,560 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

14 Jun 2013

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%\TotalSecure2009
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\nsdC.tmp

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %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.)

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
TotalSecure2009 = "%Program Files%\TotalSecure2009\scan.exe"

It 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\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\nsr1.tmp
  • %User Temp%\nsdC.tmp

(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_CURRENT_USER\Software\TotalSecure2009

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009

HKEY_CURRENT_USER\Software\Microsoft\
Bind

HKEY_CLASSES_ROOT\Vjhas

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Vjhas\CLSID

HKEY_CLASSES_ROOT\toolie.Bho

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
toolie.Bho\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
toolie.Bho\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}\TypeLib

It adds the following registry entries:

HKEY_CURRENT_USER\Software\TotalSecure2009
Path = "%Program Files%\TotalSecure2009"

HKEY_CURRENT_USER\Software\TotalSecure2009
Inst = "{malware path and file name}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
UninstallString = "%Program Files%\TotalSecure2009\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
InstallLocation = "%Program Files%\TotalSecure2009"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
DisplayName = "Total Secure 2009"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
DisplayIcon = "%Program Files%\TotalSecure2009\scan.exe,0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
DisplayVersion = "3.4"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
VersionMajor = "2"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
VersionMinor = "2"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Total Secure 2009
NoRepair = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Bind
comment2 = "%Program Files%\TotalSecure2009\reg.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Bind
comment = "4913138"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\ThemeManager
SystemID = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}\TypeLib
Version = "1.0"

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\TotalSecure2009\scan.exe
  • %Program Files%\TotalSecure2009\reg.exe
  • %Program Files%\TotalSecure2009\totalsecure.s2
  • %Program Files%\TotalSecure2009\totalsecure.s3
  • %Program Files%\TotalSecure2009\totalsecure.s6
  • %Program Files%\TotalSecure2009\uninstall.exe
  • %Start Menu%\Programs\Total Secure 2009.lnk
  • %Desktop%\Total Secure 2009.lnk
  • %User Temp%\nsdC.tmp\System.dll
  • %System%\aguic.dll
  • %User Temp%\8u9fdfn12.tmp

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %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.. %System% is the Windows system folder, which is usually C:\Windows\System32.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

[ Learn More ]

Step 3

Close all opened browser windows

Step 4

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_CURRENT_USER\Software
    • TotalSecure2009
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • Total Secure 2009
  • In HKEY_CURRENT_USER\Software\Microsoft
    • Bind
  • In HKEY_CLASSES_ROOT
    • Vjhas
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Vjhas
    • CLSID
  • In HKEY_CLASSES_ROOT
    • toolie.Bho
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\toolie.Bho
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\toolie.Bho
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{15C7D7AD-A87A-4C0D-9D8B-637FCD3488EF}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8FEDD8C2-47C8-484E-AF34-3EACB7D21158}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {700ADE6F-527F-44A9-B8F9-9FC2861C5F14}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}
    • TypeLib

Step 5

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
    • TotalSecure2009 = "%Program Files%\TotalSecure2009\scan.exe"
  • In HKEY_CURRENT_USER\Software\TotalSecure2009
    • Path = "%Program Files%\TotalSecure2009"
  • In HKEY_CURRENT_USER\Software\TotalSecure2009
    • Inst = "{malware path and file name}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • UninstallString = "%Program Files%\TotalSecure2009\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • InstallLocation = "%Program Files%\TotalSecure2009"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • DisplayName = "Total Secure 2009"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • DisplayIcon = "%Program Files%\TotalSecure2009\scan.exe,0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • DisplayVersion = "3.4"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • VersionMajor = "2"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • VersionMinor = "2"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Total Secure 2009
    • NoRepair = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\Bind
    • comment2 = "%Program Files%\TotalSecure2009\reg.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Bind
    • comment = "4913138"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ThemeManager
    • SystemID = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BE17AE9C-3BD1-4BAD-936F-B77B63D5763F}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8FEDD8C2-47C8-484E-AF34-3EACB7D21158}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{700ADE6F-527F-44A9-B8F9-9FC2861C5F14}\TypeLib
    • Version = "1.0"

Step 6

Search and delete these components

[ Learn More ]
There may be some components 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%\TotalSecure2009\scan.exe
  • %Program Files%\TotalSecure2009\reg.exe
  • %Program Files%\TotalSecure2009\totalsecure.s2
  • %Program Files%\TotalSecure2009\totalsecure.s3
  • %Program Files%\TotalSecure2009\totalsecure.s6
  • %Program Files%\TotalSecure2009\uninstall.exe
  • %Start Menu%\Programs\Total Secure 2009.lnk
  • %Desktop%\Total Secure 2009.lnk
  • %User Temp%\nsdC.tmp\System.dll
  • %System%\aguic.dll
  • %User Temp%\8u9fdfn12.tmp

Step 7

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%\TotalSecure2009
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\nsdC.tmp

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_BHO.TG. 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 9

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%\nsr1.tmp
  • %User Temp%\nsdC.tmp


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