VIRUS!!! VIRUS!!! VIRUS!!!!! BE CAREFUL!!!

[Sandeep Kurliye]

 <<virus info.html>> 

Sandeep Kurliye
Certified Oracle DBA
Almoayyed International Group
Almoayyed Computers,
PO Box 26259, Manama, Bahrain.
Ph. 973-700777 Fax.973-701211
Email. [EMAIL PROTECTED]

Title: McAfee - AVERT

Buy Products   Try Products   Download Updates      Products     Downloads     Support     Services     AVERT     Partners     About McAfee   Virus Alerts Anti-Virus Updates Virus Information Library - Overview - Newly Discovered Viruses - Recently Updated Viruses - Hoaxes - Virus Calendar - White Papers AVERT Research Center AVERT WebImmune Virus Name Risk Assessment W32/Klez.h@MM Medium Virus Information Discovery Date: 04/17/2002 Origin: Unknown Length: approx 90kB Type: Internet Worm SubType: Win32 Minimum Dat: 4182 Minimum Engine: 4.0.70 DAT Release Date: 01/23/2002 Description Added: 04/17/2002 Description Modified: 04/26/2002 8:38 AM (PT) Description Menu Virus Characteristics Symptoms Method Of Infection Removal Instructions Variants / Aliases Rate this page Print This Page Virus Characteristics --- Update 4/18/2002 --- AVERT has raised the risk assessment of this threat to Medium after seeing an increase in prevalence over the past 24 hours. Home users are at a greater risk of infection, as they tend to update their DATs less frequently then corporations. As such, the risk of becoming infected in a corporate environment is lower. This latest W32/Klez variant is already detected as W32/Klez.gen@MM by McAfee products using the 4182 DATs (23 January 2002) or greater. W32/Klez.h@MM has a number of similarities to previous W32/Klez variants, for example: W32/Klez.h@MM makes use of Incorrect MIME Header Can Cause IE to Execute E-mail Attachment vulnerability in Microsoft Internet Explorer (ver 5.01 or 5.5 without SP2). the worm has the ability to spoof the From: field (often set to an address found on the victim machine). the worm attempts to unload several processes (antivirus programs) from memory. Including those containing the following strings: _AVP32 _AVPCC NOD32 NPSSVC NRESQ32 NSCHED32 NSCHEDNT NSPLUGIN NAV NAVAPSVC NAVAPW32 NAVLU32 NAVRUNR NAVW32 _AVPM ALERTSVC AMON AVP32 AVPCC AVPM N32SCANW NAVWNT ANTIVIR AVPUPD AVGCTRL AVWIN95 SCAN32 VSHWIN32 F-STOPW F-PROT95 ACKWIN32 VETTRAY VET95 SWEEP95 PCCWIN98 IOMON98 AVPTC AVE32 AVCONSOL FP-WIN DVP95 F-AGNT95 CLAW95 NVC95 SCAN VIRUS LOCKDOWN2000 Norton Mcafee Antivir The worm is able to propagate over the network by copying itself to network shares (assuming sufficient permissions exist). Target filenames are chosen randomly, and can have single or double file extensions. For example:   350.bak.scr   bootlog.jpg   user.xls.exe The worm may also copy itself into RAR archives, for example:   HREF.mpeg.rar   HREF.txt.rar   lmbtt.pas.rar The worm mails itself to email addresses in the Windows Address Book, plus addresses extracted from files on the victim machine. It arrives in an email message whose subject and body is composed from a pool of strings carried within the virus (the virus can also add other strings obtained from the local machine). For example: Subject: A very funny website or Subject: 1996 Microsoft Corporation or Subject: Hello,honey or Subject: Initing esdi or Subject: Editor of PC Magazine. or Subject: Some questions or Subject: Telephone number The file attachment name is again generated randomly, and ends with a .exe, .scr, .pif, or .bat extension, for example:   ALIGN.pif   User.bat   line.bat Thanks to the use of the exploit described above, simply opening or previewing the message in a vulnerable mail client can result in infection of the victim machine. W32/Klez.h@MM masquerades as a free immunity tool in at least one of the messages used. Below is the message sent by the virus itself. Subject: Worm Klez.E Immunity Body: Klez.E is the most common world-wide spreading worm. It's very dangerous by corrupting your files. Because of its very smart stealth and anti-anti-virus technic,most common AV software can't detect or clean it.We developed this free immunity tool to defeat the malicious virus. You only need to run this tool once,and then Klez will never come into your PC. NOTE: Because this tool acts as a fake Klez to fool the real worm,some AV monitor maybe cry when you run it. If so,Ignore the warning,and select 'continue'. If you have any question,please mail to me. The worm may send a clean document in addition to an infected file. A document found on the hard disk, that contains one of the following extensions, is sent: .txt .htm .html .wab .asp .doc .rtf .xls .jpg .cpp .c .pas .mpg .mpeg .bak .mp3 .pdf This payload can result in confidental information being sent to others. Top of Page Symptoms Randomly/oddly named files on network shares, as described above. Reference to a WINKxxx.EXE file ("xxx" looks random) in a Registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Top of Page Method Of Infection This virus can be considered a blended threat. It mass-mails itself to email addresses found on the local system, exploits a Microsoft vulnerability, spreads via network shares, infects executables on the local system, and drops an additional file infecting virus, W95/Elkern.cav.c. Top of Page Removal Instructions Use current engine and DAT files for detection. Once infected, VirusScan may not be able to run as the virus can terminate the process before any scanning/removal is accomplished. The following steps will circumvent this action and allow for proper VirusScan scanning/removal, by using the command-line scanner. Ensure that you are using the minimum DAT specified or higher. Close all running applications Disconnect the system from the network Click START | RUN, type command and hit ENTER Change to the VirusScan engine directory: Win9x/ME - Type cd \progra~1\common~1\networ~1\viruss~1\40~1.xx and hit ENTER WinNT/2K/XP - Type cd \progra~1\common~1\networ~1\viruss~1\40F809~1.xx and hit ENTER Rename SCAN.EXE to CLEAN.EXE to prevent the virus from terminating the process and deleting files. Type, ren scan.exe clean.exe and hit ENTER First, scan the system directory Win9x/ME - Type clean.exe %windir%\system\win*.exe and hit ENTER WinNT/2K/XP - Type clean.exe %windir%\system32\win*.exe and hit ENTER Once the scan has completed, Type clean.exe /adl /clean and hit ENTER Rename scan.exe. Type, ren clean.exe scan.exe and hit ENTER After scanning and removal is complete, reboot the system Apply Internet Explorer patch if necessary. Additional Windows ME/XP removal considerations Top of Page Variants Name Type Sub Type Differences Top of Page Aliases Name W32/Klez.G@mm (Norman) W32/Klez.gen@MM W32/Klez.I (Panda) W32/Klez.K-mm WORM_KLEZ.G (Trend) Top of Page McAfee is a business unit of Network Associates, Inc. © 2002, Networks Associates Technology, Inc. All Rights Reserved. Privacy Policy Statement.