ADW_TOMOS

 Analysis by: Anthony Joe Melgarejo
 Modified by: Jimelle Monteser

 ALIASES:

BetterInstaller (fs) (Vipre), W32/SomotoBetterInstaller.A!Eldorado (F-Prot), NSIS.Adware.Somoto-1 (ClamAV), a variant of Win32/Somoto.A application, a variant of Win32/Somoto.A application (ESET)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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

It comes with an uninstall package that completely removes the files it dropped and the registries it created.

  TECHNICAL DETAILS

File Size:

166,736 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

27 May 2013

Arrival Details

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

Installation

This adware adds the following folders:

  • %All Users Profile%\Application Data\SweetIM
  • %User Temp%\is{random numbers}
  • %User Temp%\ish{random numbers}
  • %User Temp%\MessengerCache
  • %User Temp%\nsq{random 1}.tmp
  • %User Temp%\nsq{random 2}.tmp
  • %Program Files%\FindLyrics
  • %Program Files%\SweetIM
  • %Program Files%\sweetpacks bundle uninstaller
  • %Windows%\Installer\{A0C9DF2B-89B5-4483-8983-18A68200F1B4}
  • %Windows%\Installer\{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}
  • %System%\WNLT

(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It drops the following files:

  • %Application Data%\Mozilla\Firefox\Profiles\{random}.default\user.js
  • %User Temp%\biclient.exe
  • %User Temp%\bundlesweetimsetup.exe
  • %User Temp%\GenericUninstall.exe
  • %User Temp%\mgsqlite3.dll
  • %User Temp%\nsq{random 1}.tmp\registry.dll
  • %User Temp%\nsq{random 2}.tmp\nsProcess.dll
  • %User Temp%\uninstaller.exe
  • %User Temp%\WSSetup.exe
  • %Windows%\Tasks\FindLyrics Update.job

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

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
SweetIM = "%Program Files%\SweetIM\Messenger\SweetIM.exe"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{44C9CC91-6A4A-4579-B4B5-899ECDC18DC6}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{EEE6C35C-6118-11DC-9C72-001320C79847}

Other System Modifications

This adware deletes the following files:

  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions.ini
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\extensions.rdf
  • %Application Data%\Mozilla\Firefox\Profiles\4wwmjcqo.default\search.json

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

It adds the following registry entries:

HKEY_CURRENT_USER\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\
Software\Microsoft\Outlook Express\
5.0\Rules
Messenger Auto logon = "0"

HKEY_CURRENT_USER\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\
Software\Microsoft\Outlook Express\
5.0\Rules
MessengerWuzHere = "0"

HKEY_CURRENT_USER\Software\Mozilla\
Firefox\Extensions
findlyrics@findlyrics.co = "%Program Files%\FindLyrics\FF\"

HKEY_CURRENT_USER\Software\Microsoft\
SQMClient
UserId = "{9256A39B-AE4E-484B-A0D4-3494539F0A6C}"

HKEY_CURRENT_USER\Software\Microsoft\
MSNMessenger\SQM
Canary = "1"

HKEY_CURRENT_USER\Software\Wow6432Node\
Microsoft\Windows NT\CurrentVersion\
AppCompatFlags\Layers
%Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"

HKEY_CURRENT_USER\Software\Wow6432Node\
Microsoft\Windows NT\CurrentVersion\
AppCompatFlags\Layers
%User Temp%\flcsup.exe = "RunAsAdmin"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes
DefaultScope = "{EEE6C360-6118-11DC-9C72-001320C79847}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\AppCompatFlags\
Layers
%Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"

HKEY_CURRENT_USER\Software\Microsoft\
Windows NT\CurrentVersion\AppCompatFlags\
Layers
%User Temp%\flcsup.exe = "RunAsAdmin"

It adds the following registry keys as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\SweetIM

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Google\Chrome\Extensions\
jmhhdaimhfblnamlcdijbaakkifakade

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
sim-packages

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SWEETIE.IEToolbar

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SweetIM_URLSearchHook.ToolbarURLSearchHook

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Toolbar3.SWEETIE

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{44C9CC91-6A4A-4579-B4B5-899ECDC18DC6}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{82AC53B4-164C-4B07-A016-437A8388B81A}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{A4A0CB15-8465-4F58-A7E5-73084EA2A064}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MediaPlayer.GraphicsUtils

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MgMediaPlayer.GifAnimator

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EEE6C35B-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Installer\Features\B2FD9C0A5B9838449838816A28001F4B

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Installer\Features\FB6D58DD787439A4995AF3C00FEA8843

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Installer\UpgradeCodes\789034A89BAC50E4782F0A7BDBF75632

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Installer\UpgradeCodes\A97CEC23332751B47BA4B95BAA50C9D0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{5C927B89-5D80-4017-889F-93294895BC5F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{A439801C-961D-452C-AB42-7848E9CBD289}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EEE6C358-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{EEE6C35A-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{F4EBB1E2-21F3-4786-8CF4-16EC5925867F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{4D3B167E-5FD8-4276-8FD7-9DF19C1E4D19}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{BA5B874B-C72A-4529-B2CF-D7485602D541}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{EEE6C35E-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{EEE6C35F-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Google\
Chrome\Extensions\jmhhdaimhfblnamlcdijbaakkifakade

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\SearchScopes\{EEE6C360-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Low Rights\ElevationPolicy\
{EEE6C367-6118-11DC-9C72-001320C79847}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\App Paths\
SweetIM.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
UserData\S-1-5-18\Products\
B2FD9C0A5B9838449838816A28001F4B

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Installer\
UserData\S-1-5-18\Products\
FB6D58DD787439A4995AF3C00FEA8843

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\SearchScopes\{EEE6C360-6118-11DC-9C72-001320C79847}

HKEY_CURRENT_USER\Software\findlyrics

HKEY_CURRENT_USER\Software\ImInstaller

HKEY_CURRENT_USER\Software\InstallCore

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://home.sweetim.com/?ptr=100&crg=3.1010000.10039&barid={3FF72369-CA1B-11E2-A1AE-000C296817CC}"

(Note: The default value data of the said registry entry is {user-defined home page}.)

Other Details

This adware adds the following registry entries to add an uninstall option to the Control Panel:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
findlyrics@findlyrics.co
UninstallString = "%Program Files%\FindLyrics\uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
SweetIM Bundle by SweetPacks
UninstallString = ""%Program Files%\sweetpacks bundle uninstaller\uninstaller.exe" "/appName=SweetIM Bundle by SweetPacks" "/linkurl=http://lp.sweetim.com/SweetPacksBundleUninstaller" "/sweettext=SweetIM (SweetIM for Messenger, Toolbar, Update Manager)""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{A0C9DF2B-89B5-4483-8983-18A68200F1B4}
UninstallString = "MsiExec.exe /X{A0C9DF2B-89B5-4483-8983-18A68200F1B4}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}
UninstallString = "MsiExec.exe /X{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}"

It connects to the following possibly malicious URL:

  • http://{BLOCKED}v.com/awjpfreezip75640/freezipuyiv/4a1cd1d66e612b4ea9c5482779a412bc?v=2.0&muid=C80A452531DD1EF82B03122AD117ED71
  • http://{BLOCKED}8us8fpho.cloudfront.net/images/Tokyo/tokyoLightGrayStripesBG.jpg
  • http://static.{BLOCKED}v.com/js/libs/storage.swf?254510

It comes with an uninstall package that completely removes the files it dropped and the registries it added.

NOTES:

It uses Windows Task Scheduler to create a scheduled task that checks for updates for its component.

The scheduled task executes the update everyday during the time of installation.

The folders mentioned above are used as installation and settings directory for the following products included in its package:

  • SweetIM Messenger
  • SweetIM Toolbar
  • FindLyrics

It prompts users if they want to change their default search engine, homepage and new tab page to SweetPacks (SweetIM) in Internet Explorer.

It deletes the following registry entry:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\URLSearchHooks
{CFBFAE00-17A6-11D0-99CB-00C04FD64497} = ""

  SOLUTION

Minimum Scan Engine:

9.300

SSAPI PATTERN File:

1.406.05

SSAPI PATTERN Date:

27 May 2013

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

Scan your computer with your Trend Micro product and note files detected as ADW_TOMOS

Step 3

Identify and terminate files detected as ADW_TOMOS

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Remove ADW_TOMOS by using its own Uninstall option

[ Learn More ]
To uninstall the grayware process

Step 5

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • SweetIM = "%Program Files%\SweetIM\Messenger\SweetIM.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    • Browser Helper Objects\{44C9CC91-6A4A-4579-B4B5-899ECDC18DC6}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer
    • Browser Helper Objects\{EEE6C35C-6118-11DC-9C72-001320C79847}
  • In HKEY_CURRENT_USER\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\Software\Microsoft\Outlook Express\5.0\Rules
    • Messenger Auto logon = "0"
  • In HKEY_CURRENT_USER\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\Software\Microsoft\Outlook Express\5.0\Rules
    • MessengerWuzHere = "0"
  • In HKEY_CURRENT_USER\Software\Mozilla\Firefox\Extensions
    • findlyrics@findlyrics.co = "%Program Files%\FindLyrics\FF\"
  • In HKEY_CURRENT_USER\Software\Microsoft\SQMClient
    • UserId = "{9256A39B-AE4E-484B-A0D4-3494539F0A6C}"
  • In HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\SQM
    • Canary = "1"
  • In HKEY_CURRENT_USER\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %User Temp%\flcsup.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
    • DefaultScope = "{EEE6C360-6118-11DC-9C72-001320C79847}"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %User Temp%\flcsup.exe = "RunAsAdmin"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\findlyrics@findlyrics.co
    • UninstallString = "%Program Files%\FindLyrics\uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SweetIM Bundle by SweetPacks
    • UninstallString = ""%Program Files%\sweetpacks bundle uninstaller\uninstaller.exe" "/appName=SweetIM Bundle by SweetPacks" "/linkurl=http://lp.sweetim.com/SweetPacksBundleUninstaller" "/sweettext=SweetIM (SweetIM for Messenger, Toolbar, Update Manager)""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{A0C9DF2B-89B5-4483-8983-18A68200F1B4}
    • UninstallString = "MsiExec.exe /X{A0C9DF2B-89B5-4483-8983-18A68200F1B4}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}
    • UninstallString = "MsiExec.exe /X{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}"

Step 6

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\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\Software\Microsoft\Outlook Express\5.0\Rules
    • Messenger Auto logon = "0"
  • In HKEY_CURRENT_USER\Identities\{41C0E021-254D-499E-B79C-73FD65697316}\Software\Microsoft\Outlook Express\5.0\Rules
    • MessengerWuzHere = "0"
  • In HKEY_CURRENT_USER\Software\Mozilla\Firefox\Extensions
    • findlyrics@findlyrics.co = "%Program Files%\FindLyrics\FF\"
  • In HKEY_CURRENT_USER\Software\Microsoft\SQMClient
    • UserId = "{9256A39B-AE4E-484B-A0D4-3494539F0A6C}"
  • In HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\SQM
    • Canary = "1"
  • In HKEY_CURRENT_USER\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %User Temp%\flcsup.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
    • DefaultScope = "{EEE6C360-6118-11DC-9C72-001320C79847}"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %Program Files%\FindLyrics\flcsur.exe = "RunAsAdmin"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers
    • %User Temp%\flcsup.exe = "RunAsAdmin"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\findlyrics@findlyrics.co
    • UninstallString = "%Program Files%\FindLyrics\uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SweetIM Bundle by SweetPacks
    • UninstallString = ""%Program Files%\sweetpacks bundle uninstaller\uninstaller.exe" "/appName=SweetIM Bundle by SweetPacks" "/linkurl=http://lp.sweetim.com/SweetPacksBundleUninstaller" "/sweettext=SweetIM (SweetIM for Messenger, Toolbar, Update Manager)""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{A0C9DF2B-89B5-4483-8983-18A68200F1B4}
    • UninstallString = "MsiExec.exe /X{A0C9DF2B-89B5-4483-8983-18A68200F1B4}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}
    • UninstallString = "MsiExec.exe /X{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}"

Step 7

Restore this modified registry value

[ 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\Internet Explorer\Main
    • From: Start Page = "http://home.sweetim.com/?ptr=100&crg=3.1010000.10039&barid={3FF72369-CA1B-11E2-A1AE-000C296817CC}"
      To: Start Page = "{user-defined home page}"

Step 8

Restore this deleted registry key/value 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\Internet Explorer\URLSearchHooks
    • {CFBFAE00-17A6-11D0-99CB-00C04FD64497} = ""

Step 9

Search and delete this folder

[ 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.
  • %All Users Profile%\Application Data\SweetIM
  • %User Temp%\is{random numbers}
  • %User Temp%\ish{random numbers}
  • %User Temp%\MessengerCache
  • %User Temp%\nsq{random 1}.tmp
  • %User Temp%\nsq{random 2}.tmp
  • %Program Files%\FindLyrics
  • %Program Files%\SweetIM
  • %Program Files%\sweetpacks bundle uninstaller
  • %Windows%\Installer\{A0C9DF2B-89B5-4483-8983-18A68200F1B4}
  • %Windows%\Installer\{DD85D6BF-4787-4A93-99A5-3F0CF0AE8834}
  • %System%\WNLT

Step 10

Search and delete these files

[ Learn More ]
There may be some 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.
  • %Application Data%\Mozilla\Firefox\Profiles\{random}.default\user.js
  • %User Temp%\biclient.exe
  • %User Temp%\bundlesweetimsetup.exe
  • %User Temp%\GenericUninstall.exe
  • %User Temp%\mgsqlite3.dll
  • %User Temp%\nsq{random 1}.tmp\registry.dll
  • %User Temp%\nsq{random 2}.tmp\nsProcess.dll
  • %User Temp%\uninstaller.exe
  • %User Temp%\WSSetup.exe
  • %Windows%\Tasks\FindLyrics Update.job

Step 11

Scan your computer with your Trend Micro product to delete files detected as ADW_TOMOS. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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