TROJ_PACKSKINTRIM_000002b.TOMA


 ALIASES:

TrojanDownloader:Win32/Wintrim.BX (Microsoft); Skintrim.gen.f (McAfee); Trojan Horse (Symantec); PAK:PE_Patch (Kaspersky); Trojan-Downloader.Win32.Wintrim.bxa (v) (Sunbelt); Trojan.Generic.5601586 (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:

922,724 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

26 Sep 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:

  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsa3.tmp
  • %Program Files%\InternetGameBox
  • %Program Files%\InternetGameBox\ressources
  • %Program Files%\InternetGameBox\skins
  • %Start Menu%\Programs\InternetGameBox
  • ressources
  • ressources\favoris
  • %Program Files%\InternetGameBox\ressources\favoris

(Note: %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:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %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.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu 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
owfefn = "%Application Data%\owfefn.exe owfefn"

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\nsk1.tmp
  • %User Temp%\nsa3.tmp
  • %User Temp%\wbk4.tmp
  • %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log

(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.. %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\IGB

HKEY_LOCAL_MACHINE\Software\IGB

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox

HKEY_CURRENT_USER\Software\fcn

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn

HKEY_CURRENT_USER\Software\LanConfig

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}\TypeLib

HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\
Software\Microsoft\Outlook Express\
5.0\signatures

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
nums = "FCu_SSmAAA-FB0rWl0AAA"

HKEY_CURRENT_USER\Software\IGB
nums = "FCu_SSmAAA-FB0rWl0AAA"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
grpid = "875"

HKEY_CURRENT_USER\Software\IGB
grpid = "875"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
InstallOpt1 = "1"

HKEY_CURRENT_USER\Software\IGB
InstallOpt1 = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
installdt = "20081206"

HKEY_CURRENT_USER\Software\IGB
installdt = "20081206"

HKEY_CURRENT_USER\Software\IGB
uai = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
dl_lg = "IT"

HKEY_CURRENT_USER\Software\IGB
dl_lg = "IT"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
DisplayName = "InternetGameBox "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
UninstallString = "%Program Files%\InternetGameBox\uninst.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
UninstallString2 = "%Program Files%\InternetGameBox\uninst.exe /S"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
DisplayIcon = "%Program Files%\InternetGameBox\InternetGameBox.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
URLInfoAbout = "http://www.{BLOCKED}etgamebox.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
InternetGameBox
Publisher = "OOO «Favorit»"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
Installer Language = "1033"

HKEY_CURRENT_USER\Software\fcn
gid = "875"

HKEY_CURRENT_USER\Software\fcn
cnid = "V4Nb4bUgSie8y5MG1mwFnw"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn
DisplayName = "Favorit"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn
UninstallString = "%Application Data%\owfefn.exe -uninstall"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn
NoRemove = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
owfefn
NoRepair = "1"

HKEY_CURRENT_USER\Software\fcn
idt = "201209260834"

HKEY_CURRENT_USER\Software\LanConfig
LAN = "UP"

HKEY_LOCAL_MACHINE\SOFTWARE\IGB
bnrid = "672125"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts
ConnectionSettingsMigrated = "1"

HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\
Software\Microsoft\Outlook Express\
5.0
StoreMigratedV5 = "1"

HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\
Software\Microsoft\Outlook Express\
5.0
Settings Upgraded = "7"

HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\
Software\Microsoft\Outlook Express\
5.0
Running = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts
AssociatedID = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager
Server ID = "4"

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4
FirstRun = "1"

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4
OlkContactRefresh = "0"

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4
OlkFolderRefresh = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
Version = "1.0"

HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\
Software\Microsoft\Outlook Express\
5.0\Mail
Attach VCard = "0"

It modifies the following registry entries:

HKEY_CURRENT_USER\SessionInformation
ProgramCount = "2"

(Note: The default value data of the said registry entry is 2.)

HKEY_CURRENT_USER\SessionInformation
ProgramCount = "1"

(Note: The default value data of the said registry entry is 2.)

HKEY_CURRENT_USER\SessionInformation
ProgramCount = "3"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4EFCED9C6BDD0C985CA3C7D253063C5BE6FC620C
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4EF2E6670AC9B5091FE06BE0E5483EAAD6BA32D9
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4C95A9902ABE0777CED18D6ACCC3372D2748381E
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4BA7B9DDD68788E12FF852E1A024204BF286A8F6
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4B421F7515F6AE8A6ECEF97F6982A400A4D9224E
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
47AFB915CDA26D82467B97FA42914468726138DD
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4463C531D7CCC1006794612BB656D3BF8257846F
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
43F9B110D5BAFD48225231B0D0082B372FEF9A54
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
43DDB1FFF3B49B73831407F6BC8B975023D07C50
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
40E78C1D523D1CD9954FAC1A1AB3BD3CBAA15BFC
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
4072BA31FEC351438480F62E6CB95508461EAB2F
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
3F85F2BB4A62B0B58BE1614ABB0D4631B4BEF8BA
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
394FF6850B06BE52E51856CC10E180E882B385CC
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\AuthRoot\Certificates\
36863563FD5128C7BEA6F005CFE9B43668086CCE
Blob = "{random values}"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
Name = "iexplore.exe"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
DirectDraw\MostRecentApplication
ID = "4117b81"

(Note: The default value data of the said registry entry is 41107b81.)

HKEY_CURRENT_USER\Identities
Last Username = "Main Identity"

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

HKEY_CURRENT_USER\Identities
Last User ID = "{341F68BA-C841-4200-A7B4-3D5CFF202166}"

(Note: The default value data of the said registry entry is {C0FE0177-5693-4537-9331-A7402AD82D40}.)

HKEY_CURRENT_USER\Identities
Identity Login = "9853"

(Note: The default value data of the said registry entry is 98053.)

HKEY_CURRENT_USER\Identities
Identity Ordinal = "2"

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

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\nsk2.tmp
  • %User Temp%\nsa3.tmp\LangDLL.dll
  • %User Temp%\nsa3.tmp\ioSpecial.ini
  • %User Temp%\nsa3.tmp\modern-wizard.bmp
  • %User Temp%\nsa3.tmp\modern-header.bmp
  • %User Temp%\nsa3.tmp\InstallOptions.dll
  • %Application Data%\owfefn.exe
  • %Program Files%\InternetGameBox\InternetGameBox.exe
  • %Program Files%\InternetGameBox\ressources\configv2_fr.xml
  • %Program Files%\InternetGameBox\ressources\configv2_en.xml
  • %Program Files%\InternetGameBox\ressources\configv2_es.xml
  • %Program Files%\InternetGameBox\skins\skinv2.skn
  • %Program Files%\InternetGameBox\language
  • %Start Menu%\Programs\InternetGameBox\InternetGameBox.lnk
  • %Start Menu%\Programs\InternetGameBox\Uninstall.lnk
  • %Desktop%\InternetGameBox.lnk
  • %Program Files%\InternetGameBox\uninst.exe
  • %Application Data%\owfefn.dat
  • %User Temp%\owfefnpi.tmp
  • %Application Data%\owfefn_m2s.xml
  • %Application Data%\owfefn_m2s.zl
  • %Application Data%\owfefn_s2m.zl
  • %Application Data%\owfefn_s2m.xml
  • %User Temp%\owfefnup.tmp
  • %User Temp%\owfefnpic.tmp
  • %Application Data%\owfefn_navps.dat
  • ressources\favoris\defaultv2.swf
  • %Program Files%\InternetGameBox\ressources\AttenteOn.html
  • %Program Files%\InternetGameBox\ressources\AttenteOff.html

(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.. %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://updates.{BLOCKED}-network.comsa/cpi.php?{random characters}
  • http://updates.{BLOCKED}-network.comsa/receive_data.php?tcpc=68625
  • http://updates.{BLOCKED}-network.combinaries/bin.php?id=0&up=1&fd=1&tcpc=68937
  • http://updates.{BLOCKED}-network.combinaries/check.php?tcpc=71687
  • http://updates.{BLOCKED}-network.combinaries/check.php?tcpc=83781
  • http://www.{BLOCKED}etgamebox.com/igb/defaultv2.swf

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_CURRENT_USER\Software
    • IGB
  • In HKEY_LOCAL_MACHINE\Software
    • IGB
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • InternetGameBox
  • In HKEY_CURRENT_USER\Software
    • fcn
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • owfefn
  • In HKEY_CURRENT_USER\Software
    • LanConfig
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {8CC497C9-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{8CC497C9-A1DF-11CE-8098-00AA0047BE5D}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C0-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C2-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C1-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C3-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C4-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {8CC497C5-A1DF-11CE-8098-00AA0047BE5D}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}
    • TypeLib
  • In HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\Software\Microsoft\Outlook Express\5.0
    • signatures

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
    • owfefn = "%Application Data%\owfefn.exe owfefn"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • nums = "FCu_SSmAAA-FB0rWl0AAA"
  • In HKEY_CURRENT_USER\Software\IGB
    • nums = "FCu_SSmAAA-FB0rWl0AAA"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • grpid = "875"
  • In HKEY_CURRENT_USER\Software\IGB
    • grpid = "875"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • InstallOpt1 = "1"
  • In HKEY_CURRENT_USER\Software\IGB
    • InstallOpt1 = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • installdt = "20081206"
  • In HKEY_CURRENT_USER\Software\IGB
    • installdt = "20081206"
  • In HKEY_CURRENT_USER\Software\IGB
    • uai = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • dl_lg = "IT"
  • In HKEY_CURRENT_USER\Software\IGB
    • dl_lg = "IT"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • DisplayName = "InternetGameBox "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • UninstallString = "%Program Files%\InternetGameBox\uninst.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • UninstallString2 = "%Program Files%\InternetGameBox\uninst.exe /S"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • DisplayIcon = "%Program Files%\InternetGameBox\InternetGameBox.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • URLInfoAbout = "http://www.{BLOCKED}etgamebox.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InternetGameBox
    • Publisher = "OOO «Favorit»"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • Installer Language = "1033"
  • In HKEY_CURRENT_USER\Software\fcn
    • gid = "875"
  • In HKEY_CURRENT_USER\Software\fcn
    • cnid = "V4Nb4bUgSie8y5MG1mwFnw"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\owfefn
    • DisplayName = "Favorit"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\owfefn
    • UninstallString = "%Application Data%\owfefn.exe -uninstall"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\owfefn
    • NoRemove = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\owfefn
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\owfefn
    • NoRepair = "1"
  • In HKEY_CURRENT_USER\Software\fcn
    • idt = "201209260834"
  • In HKEY_CURRENT_USER\Software\LanConfig
    • LAN = "UP"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\IGB
    • bnrid = "672125"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
    • ConnectionSettingsMigrated = "1"
  • In HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\Software\Microsoft\Outlook Express\5.0
    • StoreMigratedV5 = "1"
  • In HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\Software\Microsoft\Outlook Express\5.0
    • Settings Upgraded = "7"
  • In HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\Software\Microsoft\Outlook Express\5.0
    • Running = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
    • AssociatedID = "{random values}"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager
    • Server ID = "4"
  • In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
    • FirstRun = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
    • OlkContactRefresh = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
    • OlkFolderRefresh = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C0-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C2-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C1-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C3-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C4-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{8CC497C5-A1DF-11CE-8098-00AA0047BE5D}\TypeLib
    • Version = "1.0"
  • In HKEY_CURRENT_USER\Identities\{341F68BA-C841-4200-A7B4-3D5CFF202166}\Software\Microsoft\Outlook Express\5.0\Mail
    • Attach VCard = "0"

Step 5

Restore this modified 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\SessionInformation
    • From: ProgramCount = "2"
      To: ProgramCount = ""2""
  • In HKEY_CURRENT_USER\SessionInformation
    • From: ProgramCount = "1"
      To: ProgramCount = ""2""
  • In HKEY_CURRENT_USER\SessionInformation
    • From: ProgramCount = "3"
      To: ProgramCount = ""2""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EFCED9C6BDD0C985CA3C7D253063C5BE6FC620C
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EF2E6670AC9B5091FE06BE0E5483EAAD6BA32D9
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4C95A9902ABE0777CED18D6ACCC3372D2748381E
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4BA7B9DDD68788E12FF852E1A024204BF286A8F6
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4B421F7515F6AE8A6ECEF97F6982A400A4D9224E
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\47AFB915CDA26D82467B97FA42914468726138DD
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4463C531D7CCC1006794612BB656D3BF8257846F
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\43F9B110D5BAFD48225231B0D0082B372FEF9A54
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\43DDB1FFF3B49B73831407F6BC8B975023D07C50
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\40E78C1D523D1CD9954FAC1A1AB3BD3CBAA15BFC
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4072BA31FEC351438480F62E6CB95508461EAB2F
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\3F85F2BB4A62B0B58BE1614ABB0D4631B4BEF8BA
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\394FF6850B06BE52E51856CC10E180E882B385CC
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\36863563FD5128C7BEA6F005CFE9B43668086CCE
    • From: Blob = "{random values}"
      To: Blob = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
    • From: Name = "iexplore.exe"
      To: Name = ""iexplore.exe""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication
    • From: ID = "4117b81"
      To: ID = ""41107b81""
  • In HKEY_CURRENT_USER\Identities
    • From: Last Username = "Main Identity"
      To: Last Username = ""Main Identity""
  • In HKEY_CURRENT_USER\Identities
    • From: Last User ID = "{341F68BA-C841-4200-A7B4-3D5CFF202166}"
      To: Last User ID = ""{C0FE0177-5693-4537-9331-A7402AD82D40}""
  • In HKEY_CURRENT_USER\Identities
    • From: Identity Login = "9853"
      To: Identity Login = ""98053""
  • In HKEY_CURRENT_USER\Identities
    • From: Identity Ordinal = "2"
      To: Identity Ordinal = ""1""

Step 6

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.
  • %User Temp%\nsk2.tmp
  • %User Temp%\nsa3.tmp\LangDLL.dll
  • %User Temp%\nsa3.tmp\ioSpecial.ini
  • %User Temp%\nsa3.tmp\modern-wizard.bmp
  • %User Temp%\nsa3.tmp\modern-header.bmp
  • %User Temp%\nsa3.tmp\InstallOptions.dll
  • %Application Data%\owfefn.exe
  • %Program Files%\InternetGameBox\InternetGameBox.exe
  • %Program Files%\InternetGameBox\ressources\configv2_fr.xml
  • %Program Files%\InternetGameBox\ressources\configv2_en.xml
  • %Program Files%\InternetGameBox\ressources\configv2_es.xml
  • %Program Files%\InternetGameBox\skins\skinv2.skn
  • %Program Files%\InternetGameBox\language
  • %Start Menu%\Programs\InternetGameBox\InternetGameBox.lnk
  • %Start Menu%\Programs\InternetGameBox\Uninstall.lnk
  • %Desktop%\InternetGameBox.lnk
  • %Program Files%\InternetGameBox\uninst.exe
  • %Application Data%\owfefn.dat
  • %User Temp%\owfefnpi.tmp
  • %Application Data%\owfefn_m2s.xml
  • %Application Data%\owfefn_m2s.zl
  • %Application Data%\owfefn_s2m.zl
  • %Application Data%\owfefn_s2m.xml
  • %User Temp%\owfefnup.tmp
  • %User Temp%\owfefnpic.tmp
  • %Application Data%\owfefn_navps.dat
  • ressources\favoris\defaultv2.swf
  • %Program Files%\InternetGameBox\ressources\AttenteOn.html
  • %Program Files%\InternetGameBox\ressources\AttenteOff.html

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.
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\ADMINI~1
  • %User Profile%\LOCALS~1
  • %User Temp%\nsa3.tmp
  • %Program Files%\InternetGameBox
  • %Program Files%\InternetGameBox\ressources
  • %Program Files%\InternetGameBox\skins
  • %Start Menu%\Programs\InternetGameBox
  • ressources
  • ressources\favoris
  • %Program Files%\InternetGameBox\ressources\favoris

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_PACKSKINTRIM_000002b.TOMA. 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%\nsk1.tmp
  • %User Temp%\nsa3.tmp
  • %User Temp%\wbk4.tmp
  • %Windows%\SoftwareDistribution\DataStore\Logs\edbtmp.log


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