Twain-Tech Removal: Remove Twain-Tech Forever

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Threat's profile

	Name of the threat: Twain-Tech
	Command or file name: biprep.exe
	Threat type: Adware
	Affected OS: Win32 (Windows 9x, Windows XP, Windows Vista)

Twain-Tech intrusion method

Twain-Tech copies its file(s) to your hard disk. Its typical file name is biprep.exe. Then it creates new startup key with name Twain-Tech and value biprep.exe. You can also find it in your processes list with name biprep.exe or Twain-Tech.

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Recommended Solution

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How to fix Twain-Tech

This problem can be solved manually by deleting all registry keys and files connected with Twain-Tech, removing it from starup list and unregistering all corresponding DLLs. Additionally missing DLL's should be restored from distribution in case they are corrupted by Twain-Tech.

To get rid of Twain-Tech, you should:

1. Kill the following processes and delete the appropriate files:

• b_371_0_1_585800.htm
• ft1_01_0_279_gepfah.exe
• multimpp.dll
• multimpp.dll.bak
• oyyilj8kl.exe
• smdat32a.sys
• smdat32m.sys
• twaintec.ini
• twtini.inf
• uduftm.exe
• wast2.exe
• wsebate1.exe
• wsem218.dll
• xgn.exe

Warning: you should delete only those files which checksums are listed as malicious. There may be valid files with the same names in your system. We recommend you to use Twain-Tech Removal Tool for safe problem solution.

2. Delete the following malicious folders:

• C:\Documents and Settings\User\local settings\temp\thi2eec.tmp\
• %favorites%\adult sites\
• %favorites%\adult sites\amateur\
• %favorites%\adult sites\gay\
• %favorites%\adult sites\hardcore\
• %favorites%\adult sites\latin\
• %favorites%\adult sites\mature\
• %favorites%\adult sites\reality\
• %favorites%\adult sites\teen\
• %favorites%\adult sites\upskirt\
• %favorites%\adult sites\voyeur\
• %favorites%\free adult content\
• %favorites%\free adult content\daily movies\
• %favorites%\free adult content\daily pictures\
• C:\Documents and Settings\User\thi****.tmp\

3. Delete the following malicious registry entries and\or values:

• Key: CLSID\{0000607D-D204-42C7-8E46-216055BF9918}

• Key: software\microsoft\windows\currentversion\explorer\browser helper objects\{000020dd-c72e-4113-af77-dd56626c6c42}
  Value: @

• Key: software\microsoft\windows\currentversion\explorer\browser helper objects\{0000607d-d204-42c7-8e46-216055bf9918}
  Value: @

• Key: software\classes\clsid\{000020dd-c72e-4113-af77-dd56626c6c42}
  Value: @

• Key: SOFTWARE\Classes\CLSID\{0000607D-D204-42C7-8E46-216055BF9918}

• Key: SOFTWARE\Classes\TwaintecDll.TwaintecDllObj.1

• Key: software\microsoft\windows\currentversion\explorer\browser helper objects\{000020dd-c72e-4113-af77-dd56626c6c42}

• Key: SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{0000607D-D204-42C7-8E46-216055BF9918}

• Key: software\microsoft\windows\currentversion\explorer\browser helper objects\{fa1a048a-3b99-4b86-9ece-5f7c197cbf39}
  Value: @

• Key: software\microsoft\windows\currentversion\run\oyyilj8kl
  Value: @

• Key: software\microsoft\windows\currentversion\run\xgn
  Value: @

• Key: software\microsoft\windows\currentversion\uninstall\twaintec\displayname
  Value: @

• Key: software\microsoft\windows\currentversion\uninstall\twaintec\uninstallstring
  Value: @

• Key: SOFTWARE\twaintec

• Key: software\twaintec\tt4c5ntrstransac
  Value: @

• Key: software\twaintec\tt4n5a6tionscode
  Value: @

• Key: software\twaintec\ttc1o4d5eofsfinalad
  Value: @

• Key: software\twaintec\ttc4n5tfyl
  Value: @

• Key: software\twaintec\ttc4n5trmsgsdisp
  Value: @

• Key: software\twaintec\ttc4n5trsevnt
  Value: @

• Key: software\twaintec\ttc4s5insur
  Value: @

• Key: software\twaintec\ttc4u5rrentsmode
  Value: @

• Key: software\twaintec\ttd4s5tschost
  Value: @

• Key: software\twaintec\ttd4s5tscpath
  Value: @

• Key: software\twaintec\ttd4s5tssend
  Value: @

• Key: software\twaintec\tti4d5ofsdist
  Value: @

• Key: software\twaintec\tti4d5ofsinst
  Value: @

• Key: software\twaintec\tti4g5nores
  Value: @

• Key: software\twaintec\tti4n5progscab
  Value: @

• Key: software\twaintec\tti4n5progsex
  Value: @

• Key: software\twaintec\tti4n5progslstest
  Value: @

• Key: software\twaintec\ttl3a4stmotssday
  Value: @

• Key: software\twaintec\ttl3a4stsschckin
  Value: @

• Key: software\twaintec\ttm4o5dessync
  Value: @

• Key: software\twaintec\tts4t5atusofsinst
  Value: @

• Key: software\twaintec\tts4t5i6cky1s
  Value: @

• Key: software\twaintec\tts4t5icky2s
  Value: @

• Key: software\twaintec\ttt4h5rshsbath
  Value: @

• Key: software\twaintec\ttt4h5rshschecksin
  Value: @

• Key: software\twaintec\ttt4h5rshsmots
  Value: @

• Key: software\twaintec\ttt4h5rshsyssinf
  Value: @

• Key: software\twaintec\ttt4i5m6eofsfinalad
  Value: @

• Key: software\twaintec\ttt4o5plistspos
  Value: @

• Key: CLSID\{000020dd-c72e-4113-af77-dd56626c6c42}

• Key: clsid\{386a771c-e96a-421f-8ba7-32f1b706892f}

• Key: SOFTWARE\Classes\MxTargetDll.MxTargetDllObj

• Key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\twaintec

• Key: Software\MxTarget

• Key: software\microsoft\internet explorerinternet0%\Search
  Value: CustomizeSearch

Warning: If value is listed for some registry entries, you should only clear these values and leave keys with such values untouched. We recommend you to use Twain-Tech Removal Tool for safe problem solution.

Here are the descriptions of problems connected with Twain-Tech and biprep.exe we received earlier:

apparently picked up Total Security adware/spyware/trojans/ virus somewhere

Problem Summary: apparently picked up Total Security adware/spyware/trojans/ virus somewhere
blocks selected addresses sometimes_____changes selected addresses on other times____makes a pest of itself with windows of Total Security trickery

Next threat: TWD Remote Anything »

Learn more about Twain-Tech and biprep.exe »

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