TROJ_AGENT_033894.TOMB

May 18, 2013

ALIASES:

iBryte (Sunbelt)

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: 644,704 bytes

File Type: EXE

Memory Resident: No

Initial Samples Received Date: 20 Jun 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:

%User Temp%\3163F693
%User Profile%\Application Data\Tarma Installer
%User Profile%\Tarma Installer\{361E80BE-388B-4270-BF54-A10C2B756504}
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Cache
%User Temp%\3163F693\x86
%User Temp%\3163F693\x64
%User Temp%\48A7B44E
%User Profile%\Tarma Installer\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Cache
%User Temp%\48A7B44E\x86
%User Temp%\48A7B44E\x64
%Program Files%\Yontoo

(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.. %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.. %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).)

Autostart Technique

This Trojan 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\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}

Other System Modifications

This Trojan deletes the following files:

%Program Files%\TSRE.tmp
%User Profile%\Application Data\TSRF.tmp
%User Temp%\ezLooker-S-Setup_Suite1-0308.log
%User Profile%\Tarma Installer\TSR10.tmp
%Program Files%\TSR11.tmp
%User Profile%\Tarma Installer\TSR12.tmp
%User Temp%\InstallHandler.txt
%User Temp%\YontooSetup-S-074C.log

(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).. %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.)

It deletes the following folders:

%Application Data%\Local\Microsoft\Internet Explorer\iconcache

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{4889CB45-FFEB-486E-8785-D034DAC2ACE6}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Products\{361E80BE-388B-4270-BF54-A10C2B756504}

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Recovery\Active

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Recovery\AdminActive

HKEY_LOCAL_MACHINE\Software\Google

HKEY_LOCAL_MACHINE\Software\Google\
Chrome

HKEY_LOCAL_MACHINE\Software\Google\
Chrome\Extensions

HKEY_LOCAL_MACHINE\Software\Google\
Chrome\Extensions\niapdbllcanepiiimjjndipklodoedlc

HKEY_LOCAL_MACHINE\Software\Classes\
CLSID\{80922ee0-8a76-46ae-95d5-bd3c3fe0708d}

HKEY_LOCAL_MACHINE\Software\Classes\
CLSID\{FE9271F2-6EFD-44b0-A826-84C829536E93}

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Ext\
PreApproved\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{CFDAFE39-20CE-451D-BD45-A37452F39CF0}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\YontooIEClient.DLL

HKEY_CLASSES_ROOT\YontooIEClient.Api.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Api.1\CLSID

HKEY_CLASSES_ROOT\YontooIEClient.Api

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Api\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Api\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\TypeLib

HKEY_CLASSES_ROOT\YontooIEClient.Layers.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Layers.1\CLSID

HKEY_CLASSES_ROOT\YontooIEClient.Layers

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Layers\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
YontooIEClient.Layers\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\InProcServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\NumMethods

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\NumMethods

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{9D9785E5-3424-40B6-A287-BA143AD53109}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{9307081B-7444-494C-8CF6-2FA7C0E92BFB}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Components\{8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}

HKEY_LOCAL_MACHINE\Software\Tarma Installer\
Products\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{4889CB45-FFEB-486E-8785-D034DAC2ACE6}
{361E80BE-388B-4270-BF54-A10C2B756504} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Products\{361E80BE-388B-4270-BF54-A10C2B756504}
TizPath = "%User Temp%\ezLooker-S-Setup_Suite1.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\YontooIEClient.DLL
AppID = "{CFDAFE39-20CE-451D-BD45-A37452F39CF0}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\InProcServer32
ThreadingModel = "Both"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{FE9271F2-6EFD-44b0-A826-84C829536E93}
defaultEnableAppsList = "ezLooker,pagerage,buzzdock,toprelatedtopics,twittube"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{9D9785E5-3424-40B6-A287-BA143AD53109}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{9307081B-7444-494C-8CF6-2FA7C0E92BFB}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Components\{8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
UninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
QuietUninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
ModifyPath = "%User Profile%\{889DF~1\Setup.exe /q0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Version = "1a2"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
VersionMajor = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
VersionMinor = "a"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
EstimatedSize = "6d8"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Language = "49"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
TSAware = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
TinFolder = "%User Profile%\Tarma Installer\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
TinVersion = "5021"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
InstallDate = "20120613"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
InstallLocation = "%Program Files%\Yontoo"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
InstallSource = "%User Temp%"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
DisplayIcon = "%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
DisplayName = "Yontoo 1.10.02"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
DisplayVersion = "1.10.02"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Publisher = "Yontoo LLC"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
URLInfoAbout = "http://www.{BLOCKED}o.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Contact = "support@yontoo.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\
Products\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
TizPath = "%User Temp%\YontooSetup-S.exe"

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
User Agent\Post Platform

Dropping Routine

This Trojan drops the following files:

%User Temp%\offconfig.temp
%User Temp%\idlimage.temp
%User Temp%\tmp1.tmp
%User Temp%\tmp2.tmp
%User Temp%\tmp3.tmp
%User Temp%\tmp4.tmp
%User Temp%\tmp5.tmp
%User Temp%\tmp6.tmp
%User Temp%\tmp7.tmp
%User Temp%\tmp8.tmp
%User Temp%\tmp9.tmp
%User Temp%\tmpA.tmp
%User Temp%\tmpB.tmp
%User Temp%\ezLooker-S-Setup_Suite1.exe
%User Temp%\tmpC.tmp
%User Temp%\tmpD.tmp
%User Temp%\playbryte_installer.exe
%User Temp%\PricePeepInstaller.exe
%User Temp%\ezLooker-S-Setup_Suite1-0308.exe
%User Temp%\3163F693.dat
%User Temp%\3163F693\_Setup.dll
%User Temp%\3163F693\Setup.ico
%User Temp%\3163F693\x86\regsvr32.exe
%User Temp%\3163F693\x64\regsvr32.exe
%User Temp%\YontooSetup-S.exe._tm
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.dat
%User Temp%\YontooSetup-S-074C.exe
%User Temp%\48A7B44E.dat
%User Temp%\48A7B44E\_Setup.dll
%User Temp%\48A7B44E\Setup.ico
%User Temp%\48A7B44E\_Setupx.dll
%User Temp%\48A7B44E\x86\regsvr32.exe
%User Temp%\48A7B44E\x64\regsvr32.exe
%User Temp%\7za.exe._tm
%User Temp%\sqlite3.exe._tm
%User Temp%\YontooIEClient.dll._tm
%User Temp%\InstallHandler.txt.tmp
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.dat
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.exe
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\_Setup.dll
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.exe
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setup.dll
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setupx.dll
%Program Files%\Yontoo\YontooIEClient.dll

Other Details

This Trojan connects to the following possibly malicious URL:

http://imp.{BLOCKED}m-installer.com/impression.do/?{random characters}
http://imp.{BLOCKED}m-installer.com/InstallHandler.aspx?{random characters}
http://install.{BLOCKED}m-installer.com/config/7zip_bundle/offers.json?{random characters}
http://cdn.{BLOCKED}l.oibundles2.com/bundles/maxwebsearch/muted_7zip_maxwebsearch.jpg
http://cdn.{BLOCKED}l.oibundles2.com/{BLOCKED}lerpackage/wisedownloads/muted/muted_optimum_header.jpg
http://cdn.{BLOCKED}l.oibundles2.com/bundles/ezlooker/muted_ezlooker.jpg
http://cdn.{BLOCKED}l.playbryte.com/bundles/PlayBryte_fa/muted_playbryte.jpg
http://cdn.{BLOCKED}l.oibundles2.com/bundles/pricepeep/muted_pricepeep.jpg
http://cdn.{BLOCKED}l.oibundles2.com/bundles/wajam/wajam.jpg?v=20120530
http://cdn.{BLOCKED}l.oibundles2.com/{BLOCKED}lerpackage/wisedownloads/muted/deals_progress_screen.jpg
http://cdn.{BLOCKED}l.oibundles2.com/{BLOCKED}lerpackage/wisedownloads/muted/deals_finished_screen.jpg
http://cdn.{BLOCKED}l.oibundles2.com/bundles/ezlooker/ezLooker-S-Setup_Suite1.exe
http://cdn.{BLOCKED}l.playbryte.com/bundles/PlayBryte_fa/Installer.playbryte-fa.exe?v=20120517
http://downloads.{BLOCKED}eep.net/{random path}?v=cr

This report is generated via an automated analysis system.

SOLUTION

Minimum Scan Engine: 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

Close all opened browser windows

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\Tarma Installer\Components
- {4889CB45-FFEB-486E-8785-D034DAC2ACE6}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Products
- {361E80BE-388B-4270-BF54-A10C2B756504}

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Recovery
- Active

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Recovery
- AdminActive

In HKEY_LOCAL_MACHINE\Software
- Google

In HKEY_LOCAL_MACHINE\Software\Google
- Chrome

In HKEY_LOCAL_MACHINE\Software\Google\Chrome
- Extensions

In HKEY_LOCAL_MACHINE\Software\Google\Chrome\Extensions
- niapdbllcanepiiimjjndipklodoedlc

In HKEY_LOCAL_MACHINE\Software\Classes\CLSID
- {80922ee0-8a76-46ae-95d5-bd3c3fe0708d}

In HKEY_LOCAL_MACHINE\Software\Classes\CLSID
- {FE9271F2-6EFD-44b0-A826-84C829536E93}

In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Ext\PreApproved
- {DF7770F7-832F-4BDF-B144-100EDDD0C3AE}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
- {CFDAFE39-20CE-451D-BD45-A37452F39CF0}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
- YontooIEClient.DLL

In HKEY_CLASSES_ROOT
- YontooIEClient.Api.1

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Api.1
- CLSID

In HKEY_CLASSES_ROOT
- YontooIEClient.Api

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Api
- CLSID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Api
- CurVer

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {DF7770F7-832F-4BDF-B144-100EDDD0C3AE}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
- ProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
- VersionIndependentProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
- Programmable

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
- InprocServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
- TypeLib

In HKEY_CLASSES_ROOT
- YontooIEClient.Layers.1

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Layers.1
- CLSID

In HKEY_CLASSES_ROOT
- YontooIEClient.Layers

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Layers
- CLSID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\YontooIEClient.Layers
- CurVer

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {FD72061E-9FDE-484D-A58A-0BAB4151CAD8}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- ProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- VersionIndependentProgID

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- Programmable

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- InprocServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- TypeLib

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
- Browser Helper Objects

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {D372567D-67C1-4B29-B3F0-159B52B3E967}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}
- 1.0

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0
- FLAGS

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0
- 0

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0\0
- win32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{D372567D-67C1-4B29-B3F0-159B52B3E967}\1.0
- HELPDIR

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {10DE7085-6A1E-4D41-A7BF-9AF93E351401}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
- ProxyStubClsid

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
- ProxyStubClsid32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
- TypeLib

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {1AD27395-1659-4DFF-A319-2CFA243861A5}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}
- ProxyStubClsid

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}
- ProxyStubClsid32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}
- TypeLib

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {10DE7085-6A1E-4D41-A7BF-9AF93E351401}

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
- InProcServer32

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
- NumMethods

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}
- NumMethods

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {9D9785E5-3424-40B6-A287-BA143AD53109}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {9307081B-7444-494C-8CF6-2FA7C0E92BFB}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Components
- {8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}

In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B}

In HKEY_LOCAL_MACHINE\Software\Tarma Installer\Products
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B}

To delete the registry key this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Tarma Installer>Components
Still in the left panel, locate and delete the key:
{4889CB45-FFEB-486E-8785-D034DAC2ACE6}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Tarma Installer>Products
Still in the left panel, locate and delete the key:
{361E80BE-388B-4270-BF54-A10C2B756504}
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Recovery
Still in the left panel, locate and delete the key:
Active
Again Still in the left panel, locate and delete the key:
AdminActive
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software
Still in the left panel, locate and delete the key:
Google
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Google
Still in the left panel, locate and delete the key:
Chrome
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Google>Chrome
Still in the left panel, locate and delete the key:
Extensions
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Google>Chrome>Extensions
Still in the left panel, locate and delete the key:
niapdbllcanepiiimjjndipklodoedlc
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Classes>CLSID
Still in the left panel, locate and delete the key:
{80922ee0-8a76-46ae-95d5-bd3c3fe0708d}
Again Still in the left panel, locate and delete the key:
{FE9271F2-6EFD-44b0-A826-84C829536E93}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Microsoft>Windows>CurrentVersion>Ext>PreApproved
Still in the left panel, locate and delete the key:
{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>AppID
Still in the left panel, locate and delete the key:
{CFDAFE39-20CE-451D-BD45-A37452F39CF0}
Again Still in the left panel, locate and delete the key:
YontooIEClient.DLL
In the left panel, double-click the following:
HKEY_CLASSES_ROOT
Still in the left panel, locate and delete the key:
YontooIEClient.Api.1
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>YontooIEClient.Api.1
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
YontooIEClient.Api
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>YontooIEClient.Api
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
CurVer
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID
Still in the left panel, locate and delete the key:
{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}
Still in the left panel, locate and delete the key:
ProgID
Again Still in the left panel, locate and delete the key:
VersionIndependentProgID
Again Still in the left panel, locate and delete the key:
Programmable
Again Still in the left panel, locate and delete the key:
InprocServer32
Again Still in the left panel, locate and delete the key:
TypeLib
Again Still in the left panel, locate and delete the key:
YontooIEClient.Layers.1
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>YontooIEClient.Layers.1
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
YontooIEClient.Layers
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>YontooIEClient.Layers
Still in the left panel, locate and delete the key:
CLSID
Again Still in the left panel, locate and delete the key:
CurVer
Again Still in the left panel, locate and delete the key:
{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
Still in the left panel, locate and delete the key:
ProgID
Again Still in the left panel, locate and delete the key:
VersionIndependentProgID
Again Still in the left panel, locate and delete the key:
Programmable
Again Still in the left panel, locate and delete the key:
InprocServer32
Again Still in the left panel, locate and delete the key:
TypeLib
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Explorer
Still in the left panel, locate and delete the key:
Browser Helper Objects
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib
Still in the left panel, locate and delete the key:
{D372567D-67C1-4B29-B3F0-159B52B3E967}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>TypeLib>{D372567D-67C1-4B29-B3F0-159B52B3E967}
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>{D372567D-67C1-4B29-B3F0-159B52B3E967}>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>{D372567D-67C1-4B29-B3F0-159B52B3E967}>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:
{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
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
Again Still in the left panel, locate and delete the key:
{1AD27395-1659-4DFF-A319-2CFA243861A5}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{1AD27395-1659-4DFF-A319-2CFA243861A5}
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
Again Still in the left panel, locate and delete the key:
{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{10DE7085-6A1E-4D41-A7BF-9AF93E351401}
Still in the left panel, locate and delete the key:
InProcServer32
Again Still in the left panel, locate and delete the key:
NumMethods
Again Still in the left panel, locate and delete the key:
NumMethods
Again Still in the left panel, locate and delete the key:
{9D9785E5-3424-40B6-A287-BA143AD53109}
Again Still in the left panel, locate and delete the key:
{1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}
Again Still in the left panel, locate and delete the key:
{B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}
Again Still in the left panel, locate and delete the key:
{9307081B-7444-494C-8CF6-2FA7C0E92BFB}
Again Still in the left panel, locate and delete the key:
{BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}
Again Still in the left panel, locate and delete the key:
{8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>Software>Microsoft>Windows>CurrentVersion>Uninstall
Still in the left panel, locate and delete the key:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Again Still in the left panel, locate and delete the key:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
Close Registry Editor.

Step 4

Delete this registry value

[ Learn More ]

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{4889CB45-FFEB-486E-8785-D034DAC2ACE6}
- {361E80BE-388B-4270-BF54-A10C2B756504} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Products\{361E80BE-388B-4270-BF54-A10C2B756504}
- TizPath = "%User Temp%\ezLooker-S-Setup_Suite1.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\YontooIEClient.DLL
- AppID = "{CFDAFE39-20CE-451D-BD45-A37452F39CF0}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}\InprocServer32
- ThreadingModel = "Apartment"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}\InprocServer32
- ThreadingModel = "Apartment"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
- NoExplorer = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\TypeLib
- Version = "1.0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{1AD27395-1659-4DFF-A319-2CFA243861A5}\TypeLib
- Version = "1.0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{10DE7085-6A1E-4D41-A7BF-9AF93E351401}\InProcServer32
- ThreadingModel = "Both"

In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{FE9271F2-6EFD-44b0-A826-84C829536E93}
- defaultEnableAppsList = "ezLooker,pagerage,buzzdock,toprelatedtopics,twittube"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{9D9785E5-3424-40B6-A287-BA143AD53109}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{9307081B-7444-494C-8CF6-2FA7C0E92BFB}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Components\{8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}
- {889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- UninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- QuietUninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- ModifyPath = "%User Profile%\{889DF~1\Setup.exe /q0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- Version = "1a2"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- VersionMajor = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- VersionMinor = "a"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- EstimatedSize = "6d8"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- Language = "49"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- TSAware = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- TinFolder = "%User Profile%\Tarma Installer\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- TinVersion = "5021"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- InstallDate = "20120613"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- InstallLocation = "%Program Files%\Yontoo"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- InstallSource = "%User Temp%"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- DisplayIcon = "%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- DisplayName = "Yontoo 1.10.02"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- DisplayVersion = "1.10.02"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- Publisher = "Yontoo LLC"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- URLInfoAbout = "http://www.{BLOCKED}o.com"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- Contact = "support@yontoo.com"

In HKEY_LOCAL_MACHINE\SOFTWARE\Tarma Installer\Products\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
- TizPath = "%User Temp%\YontooSetup-S.exe"

To delete the registry value this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{4889CB45-FFEB-486E-8785-D034DAC2ACE6}
In the right panel, locate and delete the entry:
{361E80BE-388B-4270-BF54-A10C2B756504} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Products>{361E80BE-388B-4270-BF54-A10C2B756504}
In the right panel, locate and delete the entry:
TizPath = "%User Temp%\ezLooker-S-Setup_Suite1.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>AppID>YontooIEClient.DLL
In the right panel, locate and delete the entry:
AppID = "{CFDAFE39-20CE-451D-BD45-A37452F39CF0}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{DF7770F7-832F-4BDF-B144-100EDDD0C3AE}>InprocServer32
In the right panel, locate and delete the entry:
ThreadingModel = "Apartment"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}>InprocServer32
In the right panel, locate and delete the entry:
ThreadingModel = "Apartment"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Explorer>Browser Helper Objects>{FD72061E-9FDE-484D-A58A-0BAB4151CAD8}
In the right panel, locate and delete the entry:
NoExplorer = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{10DE7085-6A1E-4D41-A7BF-9AF93E351401}>TypeLib
In the right panel, locate and delete the entry:
Version = "1.0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Interface>{1AD27395-1659-4DFF-A319-2CFA243861A5}>TypeLib
In the right panel, locate and delete the entry:
Version = "1.0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{10DE7085-6A1E-4D41-A7BF-9AF93E351401}>InProcServer32
In the right panel, locate and delete the entry:
ThreadingModel = "Both"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>{FE9271F2-6EFD-44b0-A826-84C829536E93}
In the right panel, locate and delete the entry:
defaultEnableAppsList = "ezLooker,pagerage,buzzdock,toprelatedtopics,twittube"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{9D9785E5-3424-40B6-A287-BA143AD53109}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{1A975F48-2A3C-44FE-A91C-49D3C12ED0BC}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{B6783DFA-B8C8-4CB6-AB9F-EF1A1F7F7AE8}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{9307081B-7444-494C-8CF6-2FA7C0E92BFB}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{BB1DCBF2-6F69-4FB5-BA9F-0B46B5F93395}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Components>{8D8654CD-7FBC-4C7E-84E9-371BFA8DB04E}
In the right panel, locate and delete the entry:
{889DF117-14D1-44EE-9F31-C5FB5D47F68B} = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Uninstall>{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
In the right panel, locate and delete the entry:
UninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q0"
Again In the right panel, locate and delete the entry:
QuietUninstallString = "%User Profile%\{889DF~1\Setup.exe /remove /q"
Again In the right panel, locate and delete the entry:
ModifyPath = "%User Profile%\{889DF~1\Setup.exe /q0"
Again In the right panel, locate and delete the entry:
Version = "1a2"
Again In the right panel, locate and delete the entry:
VersionMajor = "1"
Again In the right panel, locate and delete the entry:
VersionMinor = "a"
Again In the right panel, locate and delete the entry:
EstimatedSize = "6d8"
Again In the right panel, locate and delete the entry:
Language = "49"
Again In the right panel, locate and delete the entry:
TSAware = "1"
Again In the right panel, locate and delete the entry:
TinFolder = "%User Profile%\Tarma Installer\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}"
Again In the right panel, locate and delete the entry:
TinVersion = "5021"
Again In the right panel, locate and delete the entry:
InstallDate = "20120613"
Again In the right panel, locate and delete the entry:
InstallLocation = "%Program Files%\Yontoo"
Again In the right panel, locate and delete the entry:
InstallSource = "%User Temp%"
Again In the right panel, locate and delete the entry:
DisplayIcon = "%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico"
Again In the right panel, locate and delete the entry:
DisplayName = "Yontoo 1.10.02"
Again In the right panel, locate and delete the entry:
DisplayVersion = "1.10.02"
Again In the right panel, locate and delete the entry:
Publisher = "Yontoo LLC"
Again In the right panel, locate and delete the entry:
URLInfoAbout = "http://www.{BLOCKED}o.com"
Again In the right panel, locate and delete the entry:
Contact = "support@yontoo.com"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Tarma Installer>Products>{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
In the right panel, locate and delete the entry:
TizPath = "%User Temp%\YontooSetup-S.exe"
Close Registry Editor.

Step 5

Restore these modified registry values

[ Learn More ]

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- From: 1609 = "0"
  To: 1609 = ""1""

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.

%User Temp%\offconfig.temp
%User Temp%\idlimage.temp
%User Temp%\tmp1.tmp
%User Temp%\tmp2.tmp
%User Temp%\tmp3.tmp
%User Temp%\tmp4.tmp
%User Temp%\tmp5.tmp
%User Temp%\tmp6.tmp
%User Temp%\tmp7.tmp
%User Temp%\tmp8.tmp
%User Temp%\tmp9.tmp
%User Temp%\tmpA.tmp
%User Temp%\tmpB.tmp
%User Temp%\ezLooker-S-Setup_Suite1.exe
%User Temp%\tmpC.tmp
%User Temp%\tmpD.tmp
%User Temp%\playbryte_installer.exe
%User Temp%\PricePeepInstaller.exe
%User Temp%\ezLooker-S-Setup_Suite1-0308.exe
%User Temp%\3163F693.dat
%User Temp%\3163F693\_Setup.dll
%User Temp%\3163F693\Setup.ico
%User Temp%\3163F693\x86\regsvr32.exe
%User Temp%\3163F693\x64\regsvr32.exe
%User Temp%\YontooSetup-S.exe._tm
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.dat
%User Temp%\YontooSetup-S-074C.exe
%User Temp%\48A7B44E.dat
%User Temp%\48A7B44E\_Setup.dll
%User Temp%\48A7B44E\Setup.ico
%User Temp%\48A7B44E\_Setupx.dll
%User Temp%\48A7B44E\x86\regsvr32.exe
%User Temp%\48A7B44E\x64\regsvr32.exe
%User Temp%\7za.exe._tm
%User Temp%\sqlite3.exe._tm
%User Temp%\YontooIEClient.dll._tm
%User Temp%\InstallHandler.txt.tmp
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.dat
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.exe
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\_Setup.dll
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.exe
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setup.dll
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setupx.dll
%Program Files%\Yontoo\YontooIEClient.dll

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

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

Right-click Start then click Search....
In the Named input box, type:
%User Temp%\offconfig.temp
%User Temp%\idlimage.temp
%User Temp%\tmp1.tmp
%User Temp%\tmp2.tmp
%User Temp%\tmp3.tmp
%User Temp%\tmp4.tmp
%User Temp%\tmp5.tmp
%User Temp%\tmp6.tmp
%User Temp%\tmp7.tmp
%User Temp%\tmp8.tmp
%User Temp%\tmp9.tmp
%User Temp%\tmpA.tmp
%User Temp%\tmpB.tmp
%User Temp%\ezLooker-S-Setup_Suite1.exe
%User Temp%\tmpC.tmp
%User Temp%\tmpD.tmp
%User Temp%\playbryte_installer.exe
%User Temp%\PricePeepInstaller.exe
%User Temp%\ezLooker-S-Setup_Suite1-0308.exe
%User Temp%\3163F693.dat
%User Temp%\3163F693\_Setup.dll
%User Temp%\3163F693\Setup.ico
%User Temp%\3163F693\x86\regsvr32.exe
%User Temp%\3163F693\x64\regsvr32.exe
%User Temp%\YontooSetup-S.exe._tm
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.dat
%User Temp%\YontooSetup-S-074C.exe
%User Temp%\48A7B44E.dat
%User Temp%\48A7B44E\_Setup.dll
%User Temp%\48A7B44E\Setup.ico
%User Temp%\48A7B44E\_Setupx.dll
%User Temp%\48A7B44E\x86\regsvr32.exe
%User Temp%\48A7B44E\x64\regsvr32.exe
%User Temp%\7za.exe._tm
%User Temp%\sqlite3.exe._tm
%User Temp%\YontooIEClient.dll._tm
%User Temp%\InstallHandler.txt.tmp
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.dat
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.exe
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\_Setup.dll
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.exe
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setup.dll
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setupx.dll
%Program Files%\Yontoo\YontooIEClient.dll
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.
Repeat the said steps for all files listed.

• For Windows Vista and Windows 7 users:

Click Start>Computer.
In the Search input box, type:
%User Temp%\offconfig.temp
%User Temp%\idlimage.temp
%User Temp%\tmp1.tmp
%User Temp%\tmp2.tmp
%User Temp%\tmp3.tmp
%User Temp%\tmp4.tmp
%User Temp%\tmp5.tmp
%User Temp%\tmp6.tmp
%User Temp%\tmp7.tmp
%User Temp%\tmp8.tmp
%User Temp%\tmp9.tmp
%User Temp%\tmpA.tmp
%User Temp%\tmpB.tmp
%User Temp%\ezLooker-S-Setup_Suite1.exe
%User Temp%\tmpC.tmp
%User Temp%\tmpD.tmp
%User Temp%\playbryte_installer.exe
%User Temp%\PricePeepInstaller.exe
%User Temp%\ezLooker-S-Setup_Suite1-0308.exe
%User Temp%\3163F693.dat
%User Temp%\3163F693\_Setup.dll
%User Temp%\3163F693\Setup.ico
%User Temp%\3163F693\x86\regsvr32.exe
%User Temp%\3163F693\x64\regsvr32.exe
%User Temp%\YontooSetup-S.exe._tm
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.dat
%User Temp%\YontooSetup-S-074C.exe
%User Temp%\48A7B44E.dat
%User Temp%\48A7B44E\_Setup.dll
%User Temp%\48A7B44E\Setup.ico
%User Temp%\48A7B44E\_Setupx.dll
%User Temp%\48A7B44E\x86\regsvr32.exe
%User Temp%\48A7B44E\x64\regsvr32.exe
%User Temp%\7za.exe._tm
%User Temp%\sqlite3.exe._tm
%User Temp%\YontooIEClient.dll._tm
%User Temp%\InstallHandler.txt.tmp
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.dat
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.exe
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\_Setup.dll
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.exe
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setup.dll
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Setup.ico
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\_Setupx.dll
%Program Files%\Yontoo\YontooIEClient.dll
Once located, select the file then press SHIFT+DELETE to delete it.
Repeat the said steps for all files listed.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.

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.

%User Temp%\3163F693
%User Profile%\Application Data\Tarma Installer
%User Profile%\Tarma Installer\{361E80BE-388B-4270-BF54-A10C2B756504}
%User Profile%\{361E80BE-388B-4270-BF54-A10C2B756504}\Cache
%User Temp%\3163F693\x86
%User Temp%\3163F693\x64
%User Temp%\48A7B44E
%User Profile%\Tarma Installer\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}
%User Profile%\{889DF117-14D1-44EE-9F31-C5FB5D47F68B}\Cache
%User Temp%\48A7B44E\x86
%User Temp%\48A7B44E\x64
%Program Files%\Yontoo

Step 8

Scan your computer with your Trend Micro product to delete files detected as TROJ_AGENT_033894.TOMB. 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.

%Program Files%\TSRE.tmp
%User Profile%\Application Data\TSRF.tmp
%User Temp%\ezLooker-S-Setup_Suite1-0308.log
%User Profile%\Tarma Installer\TSR10.tmp
%Program Files%\TSR11.tmp
%User Profile%\Tarma Installer\TSR12.tmp
%User Temp%\InstallHandler.txt
%User Temp%\YontooSetup-S-074C.log

Step 10

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\Internet Settings\User Agent
- Post Platform

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TROJ_AGENT_033894.TOMB

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