ALIASES:

Adware:Win32/GameVance (Microsoft); GameVance.gen.ah. (McAfee); Gamevance!gen1 (Symantec); Duck Play LLC (v) (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: 2,132,744 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 10 Oct 2012

Arrival Details

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

Installation

This Trojan creates the following folders:

  • %Program Files%\Mighty Magoo
  • %User Profile%\Application Data\Mozilla
  • %User Profile%\Mozilla\Extensions
  • %User Profile%\Extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}
  • %User Profile%\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}\textlinks@mmagoo.com
  • %User Profile%\textlinks@mmagoo.com\components
  • %User Profile%\textlinks@mmagoo.com\chrome

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Mightymagoo = "%Program Files%\Mighty Magoo\mightymagoo32.exe a"

It registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{EEAD004E-7E2D-49f8-831C-A01647E85B53}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}

Other System Modifications

This Trojan deletes the following files:

  • %Application Data%\IconCache.db

(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\Microsoft\
Windows\CurrentVersion\Uninstall\
MightyMagoo

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

HKEY_CLASSES_ROOT\CLSID\{EEAD004E-7E2D-49f8-831C-A01647E85B53}

HKEY_CLASSES_ROOT\CLSID\{EEAD004E-7E2D-49f8-831C-A01647E85B53}\
InprocServer32

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Google Chrome

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Google Chrome

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl

HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\
System\BIOS

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Ext\
Settings\{EEAD004E-7E2D-49f8-831C-A01647E85B53}

HKEY_CLASSES_ROOT\AppID\MightyMagooText.DLL

HKEY_CLASSES_ROOT\MightyMagooText.Linker.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MightyMagooText.Linker.1\CLSID

HKEY_CLASSES_ROOT\MightyMagooText.Linker

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MightyMagooText.Linker\CLSID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MightyMagooText.Linker\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MightyMagoo
DisplayName = "Mighty Magoo"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MightyMagoo
UninstallString = "%Program Files%\Mighty Magoo\mmagooun.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
MightyMagoo
DisplayIcon = "%Program Files%\Mighty Magoo\mmagooun.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{EEAD004E-7E2D-49f8-831C-A01647E85B53}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EEAD004E-7E2D-49f8-831C-A01647E85B53}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\MightyMagooText.DLL
AppID = "{97E74A14-E5F1-40cc-9B0F-0D11946E5469}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
NoExplorer = "1"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
uid = "ffe024db-e6dd-4bab-bc08-5be4b10b06aa-XX"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
cid = "0"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
ct = "{random values}"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
ci = "e1"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
cid = "18967d2"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
sc1u = "{random characters}"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
d = "0"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
esint = "5"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
domfqc = "1f4"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
domfqt = "258"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
sc2u = "{random characters}"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
nos2 = "1"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
scr1 = "{random values}"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
eu = "{random values}"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
eus = "d8"

HKEY_CURRENT_USER\Software\AppDataLow\
mmagootl
jss = "1"

Dropping Routine

This Trojan drops the following files:

  • %Program Files%\Mighty Magoo\mightymagoolib32.dll
  • %Program Files%\Mighty Magoo\mightymagoo32.exe
  • %Program Files%\Mighty Magoo\mmagooun.exe
  • %Program Files%\Mighty Magoo\ars.cfg
  • %Program Files%\Mighty Magoo\mmagootl.dll
  • %Program Files%\Mighty Magoo\mmagooff.tmp
  • %User Profile%\textlinks@mmagoo.com\chrome.manifest
  • %User Profile%\textlinks@mmagoo.com\install.rdf
  • %User Profile%\components\mmagootlf.dll
  • %User Profile%\components\mmagootlf.xpt
  • %User Profile%\chrome\mmtextlinks.jar

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://pages.{BLOCKED}o.com/aj/inst.php?{random characters}
  • http://pages.{BLOCKED}o.com/aj/bund.php?{random characters}
  • http://cf.{BLOCKED}o.com/cd?{random characters}
  • http://cf.{BLOCKED}o.com/ed?{random characters}
  • http://cf.{BLOCKED}o.com/bar/{BLOCKED}o.bmp
  • http://cf.{BLOCKED}o.com/ctg?{random characters}
  • http://cf.{BLOCKED}o.com/cmn?{random characters}
  • http://cf.{BLOCKED}o.com/etg

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

Restart in Safe Mode

[ Learn More ]

Step 3

Close all opened browser windows

Step 4

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • MightyMagoo
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    • Browser Helper Objects
  • In HKEY_CLASSES_ROOT\CLSID
    • {EEAD004E-7E2D-49f8-831C-A01647E85B53}
  • In HKEY_CLASSES_ROOT\CLSID\{EEAD004E-7E2D-49f8-831C-A01647E85B53}
    • InprocServer32
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • Google Chrome
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • Google Chrome
  • In HKEY_CURRENT_USER\Software\AppDataLow
    • mmagootl
  • In HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System
    • BIOS
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings
    • {EEAD004E-7E2D-49f8-831C-A01647E85B53}
  • In HKEY_CLASSES_ROOT\AppID
    • MightyMagooText.DLL
  • In HKEY_CLASSES_ROOT
    • MightyMagooText.Linker.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MightyMagooText.Linker.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • MightyMagooText.Linker
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MightyMagooText.Linker
    • CLSID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MightyMagooText.Linker
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {97E74A14-E5F1-40cc-9B0F-0D11946E5469}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • TypeLib

Step 5

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • Mightymagoo = "%Program Files%\Mighty Magoo\mightymagoo32.exe a"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MightyMagoo
    • DisplayName = "Mighty Magoo"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MightyMagoo
    • UninstallString = "%Program Files%\Mighty Magoo\mmagooun.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\MightyMagoo
    • DisplayIcon = "%Program Files%\Mighty Magoo\mmagooun.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{EEAD004E-7E2D-49f8-831C-A01647E85B53}
    • NoExplorer = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{EEAD004E-7E2D-49f8-831C-A01647E85B53}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\MightyMagooText.DLL
    • AppID = "{97E74A14-E5F1-40cc-9B0F-0D11946E5469}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{97E74A14-E5F1-40cc-9B0F-0D11946E5469}
    • NoExplorer = "1"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • uid = "ffe024db-e6dd-4bab-bc08-5be4b10b06aa-XX"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • cid = "0"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • ct = "{random values}"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • ci = "e1"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • cid = "18967d2"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • sc1u = "{random characters}"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • d = "0"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • esint = "5"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • domfqc = "1f4"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • domfqt = "258"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • sc2u = "{random characters}"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • nos2 = "1"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • scr1 = "{random values}"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • eu = "{random values}"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • eus = "d8"
  • In HKEY_CURRENT_USER\Software\AppDataLow\mmagootl
    • jss = "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.
  • %Program Files%\Mighty Magoo\mightymagoolib32.dll
  • %Program Files%\Mighty Magoo\mightymagoo32.exe
  • %Program Files%\Mighty Magoo\mmagooun.exe
  • %Program Files%\Mighty Magoo\ars.cfg
  • %Program Files%\Mighty Magoo\mmagootl.dll
  • %Program Files%\Mighty Magoo\mmagooff.tmp
  • %User Profile%\textlinks@mmagoo.com\chrome.manifest
  • %User Profile%\textlinks@mmagoo.com\install.rdf
  • %User Profile%\components\mmagootlf.dll
  • %User Profile%\components\mmagootlf.xpt
  • %User Profile%\chrome\mmtextlinks.jar

Step 7

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Program Files%\Mighty Magoo
  • %User Profile%\Application Data\Mozilla
  • %User Profile%\Mozilla\Extensions
  • %User Profile%\Extensions\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}
  • %User Profile%\{ec8030f7-c20a-464f-9b0e-13a3a9e97384}\textlinks@mmagoo.com
  • %User Profile%\textlinks@mmagoo.com\components
  • %User Profile%\textlinks@mmagoo.com\chrome

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT_024171.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.

  • %Application Data%\IconCache.db


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