I am posting this in "FRIENDS" so that more of you will see it.
I have emailed many of you in the past and yesterday my wife opened a virus on my P.C. and it sent itself to everyone I have ever emailed from this computer. I finally got rid of the virus and am posting some information on it to get rid of it from MCAFEE. Sorry if this caused any of you any problems.
http://vil.mcafee.com/dispVirus.asp?virus_k=99455
Virus Profile
Virus Name: Risk Assessment:
W32/Klez.h@MM Medium
Virus Information:
Date Discovered: 4/17/2002
Date Added: 4/17/2002
Origin: Unknown
Length: approx 90kB
Type: Internet Worm
SubType: Win32
DAT Required: 4182
Virus Characteristics:
--- Update 4/30/2002 ---
This virus remains at a Medium Risk overall, however AVERT is still seeing many infections reported from Home Users and is informing Home Users that they are STILL at a HIGHER likelyhood of infection than corporate users.
HOME USERS SHOULD UPDATE THEIR DATS AS SOON AS POSSIBLE TO PREVENT INFECTION
--- 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.
Indications Of Infection:
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
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.
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
Aliases:
W32/Klez.G@mm (Norman), W32/Klez.gen@MM, W32/Klez.I (Panda), W32/Klez.K-mm, WORM_KLEZ.G (Trend)
Break the chains that bind you,
unless, of course, you're into that sort of thing.