ADW_WONTEG

This adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

File Size:

698,656 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Jan 2015

Arrival Details

This adware 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 adware creates the following folders:

%User Temp%\Tempdir
%User Temp%\TempDir

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other System Modifications

This adware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}\TypeLib

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main\FeatureControl

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_BROWSER_EMULATION

HKEY_CURRENT_USER\SOFTWARE\Appscion

It adds the following registry entries:

HKEY_CLASSES_ROOT
Setup.Application = "Setup.Application"

HKEY_CLASSES_ROOT
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90} = "Setup.Application"

HKEY_CLASSES_ROOT
Setup.Application\CLSID = "{017E057B-DACF-4A07-B878-E294565E3F90}"

HKEY_CLASSES_ROOT
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\ProgID = "Setup.Application"

HKEY_CLASSES_ROOT
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\InprocHandler32 = "ole32.dll"

HKEY_CLASSES_ROOT
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\LocalServer32 = "{malware path and file name} "

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}\TypeLib
Version = "1.0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main\FeatureControl\
FEATURE_BROWSER_EMULATION
{malware file name} = "1aa"

HKEY_CURRENT_USER\Software\Appscion
AppInstanceUid = "9D13B254-1836-4CE5-8D56-18C4226FC4A7"

Dropping Routine

This adware drops the following files:

%User Temp%\TempDir\Chrome25156_Local State
%User Temp%\TempDir\Chrome25171_Local State
%User Temp%\TempDir\Chrome25187_Local State
%User Temp%\TempDir\Firefox25203_profiles.ini
%User Temp%\TempDir\Firefox25218_profiles.ini
%User Temp%\TempDir\Chrome25218_Local State
%User Temp%\TempDir\Firefox25234_profiles.ini
%User Temp%\TempDir\Chrome25234_Local State
%User Temp%\TempDir\Firefox25250_profiles.ini
%User Temp%\TempDir\Chrome25281_Local State
%User Temp%\TempDir\Chrome25296_Local State
%User Temp%\TempDir\Firefox25359_profiles.ini
%User Temp%\TempDir\Firefox25375_profiles.ini
%User Temp%\TempDir\Chrome25390_Local State
%User Temp%\TempDir\Firefox25421_profiles.ini
%User Temp%\TempDir\Chrome27031_Local State
%User Temp%\TempDir\Firefox27109_profiles.ini

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This adware connects to the following possibly malicious URL:

http://setup.{BLOCKED}installer.com
{BLOCKED}.157.99
{BLOCKED}0.1
{BLOCKED}.228.38
{BLOCKED}.52.13

This report is generated via an automated analysis system.

Minimum Scan Engine:

9.700

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

[ 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\Classes\TypeLib
- {F126C9FC-9299-40F2-BD42-C59023AD1E7F}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}
- 1.0

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0
- FLAGS

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0
- 0

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0\0
- win32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{F126C9FC-9299-40F2-BD42-C59023AD1E7F}\1.0
- HELPDIR

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {237FDFDB-3722-470E-8BA8-90196DABE967}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}
- ProxyStubClsid

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}
- ProxyStubClsid32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}
- TypeLib

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- FeatureControl

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl
- FEATURE_BROWSER_EMULATION

In HKEY_CURRENT_USER\SOFTWARE
- Appscion

To delete the registry key this malware/grayware created:

Open Registry Editor.
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib
Still in the left panel, locate and delete the key:
{F126C9FC-9299-40F2-BD42-C59023AD1E7F}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib>{F126C9FC-9299-40F2-BD42-C59023AD1E7F}
Still in the left panel, locate and delete the key:
1.0
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib>{F126C9FC-9299-40F2-BD42-C59023AD1E7F}>1.0
Still in the left panel, locate and delete the key:
FLAGS
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib>{F126C9FC-9299-40F2-BD42-C59023AD1E7F}>1.0>0
Still in the left panel, locate and delete the key:
win32
Again Still in the left panel, locate and delete the key:
HELPDIR
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface
Still in the left panel, locate and delete the key:
{237FDFDB-3722-470E-8BA8-90196DABE967}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{237FDFDB-3722-470E-8BA8-90196DABE967}
Still in the left panel, locate and delete the key:
ProxyStubClsid
Again Still in the left panel, locate and delete the key:
ProxyStubClsid32
Again Still in the left panel, locate and delete the key:
TypeLib
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Main
Still in the left panel, locate and delete the key:
FeatureControl
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Main>FeatureControl
Still in the left panel, locate and delete the key:
FEATURE_BROWSER_EMULATION
In the left panel, double-click the following:
HKEY_CURRENT_USER>SOFTWARE
Still in the left panel, locate and delete the key:
Appscion
Close Registry Editor.

Step 3

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_CLASSES_ROOT
- Setup.Application = "Setup.Application"

In HKEY_CLASSES_ROOT
- CLSID\{017E057B-DACF-4A07-B878-E294565E3F90} = "Setup.Application"

In HKEY_CLASSES_ROOT
- Setup.Application\CLSID = "{017E057B-DACF-4A07-B878-E294565E3F90}"

In HKEY_CLASSES_ROOT
- CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\ProgID = "Setup.Application"

In HKEY_CLASSES_ROOT
- CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\InprocHandler32 = "ole32.dll"

In HKEY_CLASSES_ROOT
- CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\LocalServer32 = "{malware path and file name} "

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{237FDFDB-3722-470E-8BA8-90196DABE967}\TypeLib
- Version = "1.0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION
- {malware file name} = "1aa"

In HKEY_CURRENT_USER\Software\Appscion
- AppInstanceUid = "9D13B254-1836-4CE5-8D56-18C4226FC4A7"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_CLASSES_ROOT
In the right panel, locate and delete the entry:
Setup.Application = "Setup.Application"
Again In the right panel, locate and delete the entry:
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90} = "Setup.Application"
Again In the right panel, locate and delete the entry:
Setup.Application\CLSID = "{017E057B-DACF-4A07-B878-E294565E3F90}"
Again In the right panel, locate and delete the entry:
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\ProgID = "Setup.Application"
Again In the right panel, locate and delete the entry:
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\InprocHandler32 = "ole32.dll"
Again In the right panel, locate and delete the entry:
CLSID\{017E057B-DACF-4A07-B878-E294565E3F90}\LocalServer32 = "{malware path and file name} "
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{237FDFDB-3722-470E-8BA8-90196DABE967}>TypeLib
In the right panel, locate and delete the entry:
Version = "1.0"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Main>FeatureControl>FEATURE_BROWSER_EMULATION
In the right panel, locate and delete the entry:
{malware file name} = "1aa"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Appscion
In the right panel, locate and delete the entry:
AppInstanceUid = "9D13B254-1836-4CE5-8D56-18C4226FC4A7"
Close Registry Editor.

Step 4

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.

%User Temp%\TempDir\Chrome25156_Local State
%User Temp%\TempDir\Chrome25171_Local State
%User Temp%\TempDir\Chrome25187_Local State
%User Temp%\TempDir\Firefox25203_profiles.ini
%User Temp%\TempDir\Firefox25218_profiles.ini
%User Temp%\TempDir\Chrome25218_Local State
%User Temp%\TempDir\Firefox25234_profiles.ini
%User Temp%\TempDir\Chrome25234_Local State
%User Temp%\TempDir\Firefox25250_profiles.ini
%User Temp%\TempDir\Chrome25281_Local State
%User Temp%\TempDir\Chrome25296_Local State
%User Temp%\TempDir\Firefox25359_profiles.ini
%User Temp%\TempDir\Firefox25375_profiles.ini
%User Temp%\TempDir\Chrome25390_Local State
%User Temp%\TempDir\Firefox25421_profiles.ini
%User Temp%\TempDir\Chrome27031_Local State
%User Temp%\TempDir\Firefox27109_profiles.ini

To manually delete a malware/grayware file from an affected system:

• For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search....
In the File name* input box, type the following:
%User Temp%\TempDir\Chrome25156_Local State
%User Temp%\TempDir\Chrome25171_Local State
%User Temp%\TempDir\Chrome25187_Local State
%User Temp%\TempDir\Firefox25203_profiles.ini
%User Temp%\TempDir\Firefox25218_profiles.ini
%User Temp%\TempDir\Chrome25218_Local State
%User Temp%\TempDir\Firefox25234_profiles.ini
%User Temp%\TempDir\Chrome25234_Local State
%User Temp%\TempDir\Firefox25250_profiles.ini
%User Temp%\TempDir\Chrome25281_Local State
%User Temp%\TempDir\Chrome25296_Local State
%User Temp%\TempDir\Firefox25359_profiles.ini
%User Temp%\TempDir\Firefox25375_profiles.ini
%User Temp%\TempDir\Chrome25390_Local State
%User Temp%\TempDir\Firefox25421_profiles.ini
%User Temp%\TempDir\Chrome27031_Local State
%User Temp%\TempDir\Firefox27109_profiles.ini
In the Look In drop-down list, select My Computer then press Enter.
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%User Temp%\TempDir\Chrome25156_Local State
%User Temp%\TempDir\Chrome25171_Local State
%User Temp%\TempDir\Chrome25187_Local State
%User Temp%\TempDir\Firefox25203_profiles.ini
%User Temp%\TempDir\Firefox25218_profiles.ini
%User Temp%\TempDir\Chrome25218_Local State
%User Temp%\TempDir\Firefox25234_profiles.ini
%User Temp%\TempDir\Chrome25234_Local State
%User Temp%\TempDir\Firefox25250_profiles.ini
%User Temp%\TempDir\Chrome25281_Local State
%User Temp%\TempDir\Chrome25296_Local State
%User Temp%\TempDir\Firefox25359_profiles.ini
%User Temp%\TempDir\Firefox25375_profiles.ini
%User Temp%\TempDir\Chrome25390_Local State
%User Temp%\TempDir\Firefox25421_profiles.ini
%User Temp%\TempDir\Chrome27031_Local State
%User Temp%\TempDir\Firefox27109_profiles.ini
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 5

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.

%User Temp%\Tempdir
%User Temp%\TempDir

Step 6

Scan your computer with your Trend Micro product to delete files detected as ADW_WONTEG. 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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