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Issue 'fixmbr' command to restore the Master Boot Record Follow onscreen instructions. Select the Windows installation that is compromised and provide the administrator password. Elkern.C, which came with Klez.H, fixes this bug. Top Follow:I want to...Get helpRemove difficult malwareAvoid tech support phone scamsSee and search the latest threatsFind answers to other problemsFix my softwareFix updates and solve other problemsSee common error codesDownload and

It is capable of infecting file cavities, meaning that it may not change the sizes of files it infects. By continuing to browse the site you are agreeing to our use of cookies. If you want to discuss contents of this page - this is the easiest way to do it. Live Sales Chat Have questions? https://www.symantec.com/security_response/writeup.jsp?docid=2002-041819-3953-99

Sources Bitdefender, Win32.Elkern.A. This site uses cookies. Then the virus adds an entry to the Registry's key to run the WQK.EXE file on every reboot. Something does not work as expected?

Just like other variants it uses "split cavity" infection method and uses "WQ" marker to recognise already infected files. Detection was added with the update shipped on 26th of October around 15 o'clock GMT. English 简体中文 český English Français Deutsch Magyar Italiano 日本語 한국의 Polski Español 繁體中文 Legal Privacy Cookie Information 1 of 5 previous next close When the virus is executed, it has a very small chance of randomly activating this payload.

When the "Welcome to Setup" screen appears, press R to start the Recovery Console. Intercept X A completely new approach to endpoint security. Continue Learn More Some cookies on this site are essential, and the site won't work as expected without them. Bonuses We also use some non-essential cookies to anonymously track visitors or enhance your experience of the site.

Sophos Central Synchronized security management. On Windows XP: Insert the Windows XP CD into the CD-ROM drive and restart the computer. When the System Recovery Options dialog comes up, choose the Command Prompt. Wikidot.com Privacy Policy.

Secure Web Gateway Complete web protection everywhere. After a reboot the virus infects random EXE files by either expanding the last section of the host file or by going into cavities without changing the host files' size at The virus starts itself as a service process and therefore its task is not visible is Task List. Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another. Our expertise. The virus is dropped into the Program Files folder and run by W32/Klez-H. These new variants of W32/Klez and W32/Elkern both require minimum 4182 DATs for detection/removal.

OEM Solutions Trusted by world-leading brands. Professional Services Our experience. Partners Support Company Downloads Free Trials All product trials in one place. Weak passwords include any words in the dictionary, names, dates, consecutive letters or numbers, common words with symbol substitutions (for example, [email protected]), and so on.

SG UTM The ultimate network security package. The main difference was simply the virus's size. The .C virus variant is based on previous Elkern variants, a few minor changes were made including fixing of a bug.

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They also cause the worm to run as a service in the current session and each time Windows starts, so that the worm is always running regardless of whether any user Click here to toggle editing of individual sections of the page (if possible). These cookies are set when you submit a form, login or interact with the site by doing something that goes beyond clicking on simple links. It destroys files on all mapped and locally connected drives.

Due to some blind luck, the virus also works on Windows 2000. Free Tools Try out tools for use at home. If you do not see Performance and Maintenance, click Switch to Category View. Issue 'bootrec /fixmbr' command to restore the Master Boot Record.

Free Mac Anti-Virus Download our free Anti-Virus for Mac OS X Popular Topics Sophos Blog Naked Security Sophos Whitepapers Try us for free Try Sophos products for freeDownload now Facebook Twitter The virus generates a different key for its main code encryption and also generates a low-polymorphic initial decryptor to infect a file. If you require support, please visit the Microsoft Answer Desk.If you suspect that a file has been incorrectly identified as malware, you can submit the file for analysis.Other Microsoft sitesWindowsOfficeSurfaceWindows PhoneMobile Public Cloud Stronger, simpler cloud security.

Search Sign In Threat Analysis Threat Dashboard Free Trials Get Pricing Free Tools W32/ElKern-A Category: Viruses and Spyware Protection available since:26 Oct 2001 00:00:00 (GMT) Type: Win32 executable file virus Last Then the virus starts to look for executable files on local and network drives and shares and infect them preserving files' time and attributes. Elkern checks KERNEL32.DLL for the addresses of 27 API functions. Your peace of mind.

Before you edit the registry, you should make a backup.