Title: Lehs

Type: Worms

Remove Lehs. Removal instructions

Severity scale:

(80 / 100)

Lehs is a dangerous Internet worm with a devastating payload. It spreads by e-mail in messages with infected executable attachments. These messages look like Microsoft support letters providing a patch for certain Windows vulnerabilities. Once the user executes an attached file, the parasite installs itself to the system and creates a lot of directories and infected files in different locations. Then Lehs deletes all the executables it finds in the default system directory C:\Windows\System or C:\Windows\System32. During the deletion the parasite displays numerous messages revealing its presence in the system. Lehs also can attempt to perform a DoS attack against predetermined remote hosts. The worm runs on every Windows startup.

Lehs properties:
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic Lehs removal:

remover for Lehs

SpyHunter is recommended remover to uninstall Lehs. You should confirm using free trial that it detects current version of parasite.

Note: Manual assistance required means that one or all of removers were unable to remove parasite without some manual intervention, please read manul removal instructions below.

If you failed to remove Lehs using SpyHunter please report this to us.

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STOPzilla

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We are testing STOPzilla's efficiency at removing Lehs (2005-10-01 14:06:57)

Malwarebytes Anti Malware

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We are testing Malwarebytes Anti Malware's efficiency at removing Lehs (2005-10-01 14:06:57)

Spyware Doctor

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We are testing Spyware Doctor's efficiency at removing Lehs (2005-10-01 14:06:57)

XoftSpySE Anti Spyware

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Lehs manual removal:

FORUM:
Discuss Lehs in
spyware removal forum

Kill processes:
backup.exe, bin.exe, dage.exe, gadeth.exe, kern16.exe, kernel32.exe, microcorp.exe, micropackage.exe, msiinstall.exe, msishell.exe, mtk.exe, ndad.exe, notepad.exe, patch.exe, patch[X].exe, reinstall.exe, restoreshell.exe, shell.exe, splinter.exe, win-16_bit.exe, wincom.exe, windows.exe

HELP:
how to kill malicious processes

Delete files:
backup.exe, bin.exe, dage.exe, gadeth.exe, kern16.exe, kernel32.exe, microcorp.exe, micropackage.exe, msiinstall.exe, msishell.exe, mtk.exe, ndad.exe, notepad.exe, patch.exe, patch[X].exe, reinstall.exe, restoreshell.exe, shell.exe, splinter.exe, win-16_bit.exe, wincom.exe, windows.exe, msdos_3.bat

HELP:
how to remove harmful files

Delete directories:
C:\Windows\System\Sysrestore
C:\Windows\System32\Sysrestore
C:\[random name]
Misc:
[X] is a set of random characters and digits.

Lehs modifies essential configuration files of Windows 95/98/ME systems. Open the win.ini and system.ini files located in C:\Windows\System or C:\Windows\System32 folder and delete the following lines:
run=C:\Windows\System\Sysrestore\shell.exe
run=C:\Windows\System32\Sysrestore\shell.exe
run=C:\Windows\System\Sysrestore\notepad.exe
run=C:\Windows\System32\Sysrestore\notepad.exe

Locate the autoexec.bat file (it usually can be found in the root of the main hard disk - C:) and delete the following lines:
start C:\Windows\System\Sysrestore\notepad.exe
start C:\Windows\System32\Sysrestore\notepad.exe

Information added: 2004-03-19 10:00:00
Information updated: 2005-10-01 11:29:42

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