Alias:I-Worm.Lentin.o (AVP), W32/Yaha-R (Sophos), WORM_YAHA.Q (Trend)
Type:Worm 
Size:44,544 Bytes UPX gepackt 
Origin: 
Date:00-00-0000 
Damage:Sent by email. 
VDF Version:6.23.00.00 
Danger:Low 
Distribution:Low 

DistributionWorm/Yaha.Q copies itself into shared networks. It also spreads by email, to addresses it can find in Windows Address Book, MSN Messenger, .NET Messenger, Yahoo pager, *.HT* files. The email contains:

From:
admin@clubjenna.com
admin@codeproject2.com
admin@hackers2.com
admin@hackersclub2.com
admin@kofonline2.com
admin@zpornstars.com
av_patch@mcafee.com
av_patch@norton.com
av_patch@trendmicro.com
btq@2632.com
caijob@online.sh.cn
cathy@21cn.com
cupid@freescreensavers.com
DNA_seraph@163.com
ericpan@online.com.pk
free@hardcorescreensavers.com
free@sexyscreensavers.com
free@sql.library.com
free@xxxscreensavers.com
hamada@seikosangyo.com
info@infotech.com
jenna@jennajameson.com
kkn@k2k.comscreensavers@nomadic.com
kl@aminoprojects.com
love@lovescreensavers.com
loverscr@lovers.com
loverscreensavers@love.com
lubing@7135.com
luoairong@21cn.com
marketing@playstation.com
marketing@suppersoccer.com
me@me2K.com
newsletters@britneyspears.org
nics@noma.com
paul@kqscore2.com
plus@real.com
ravs@go2pussy.com
romanticscreensavers@love.com
sales@gcnetwork.com
sales@playboy.com
sales@real.com
sales@susoft.net
samsun@online.sh.cn
screensavers@lovers.com
services@tcsonline2.com
stone@esterplaza.com
super@21cn.com
therock@wwe.com
valentinescreensavers@t2k.com
valscr@freescreensavers.com
yjworks@online.sh.cn
zdenka@zpornstars.com
zhouyuye@citiz.net

Subject:
Are you a Soccer Fan ?
Are you beautiful
Are you in Love
Are you looking for Love
Are you the BEST
Check it out
Check this shit
Check ur friends Circle
Demo KOF 2002
Feel the fragrance of Love
Find a good friend
Freak Out
Free Demo Game
Free Screenavers of Love
Free Screensavers 4 U
Free Screensavers
Free Win32 API source
Free XXX
Free rAVs Screensavers
Hardcore Screensavers 4 U
Hip Shake it baby
Hip
How sweet this Screen saver
I Love You..
I Love You
I am in Love
Jenna 4 U
Learn How To Love
Learn SQL 4 Free
Let's Dance and forget pains
Looking for Friends
Lovers Corner
Need a friend?
Need money ??
One Hacker's Love
One Virus Writer's Story
Patch for Elkern.gen
Patch for Klez.H
Play KOF 2002 4 Free
Project Sample Screensavers
Sample KOF 2002
Sample Playboy
Say 'I Like You' To ur friend
Screensavers from Club Jenna
Sexy Screensavers 4 U
The Hotmail Hack
The King of KOF Wanna Brawl ??
The world of Friends
Things to note
True Love
U realy Want this
Visit us
WWE Screensavers
Wanna Hack ??
Wanna Rumble ??
Wanna be a HE-MAN
Wanna be friends ?
Wanna be friends ??
Wanna be like a stone ?
Wanna be my sweetheart ??
We want peace
Who is ur Best Friend
Who is your Valentine
World Tour Whats up
Wowwwwwwwwwww check it
XXX Screensavers 4 U
You are so sweet
hey check it yaar
love speaks from the heart
make ur friend happy
to ur friends
to ur lovers
war Againest Loneliness

Body:

hey,
did u always dreamnt of hacking ur friends hotmail account..
finally i got a hotmail hack from the internet that really works..
ur my best friend thats why sending to u..
check it..just run it..enter victim's address and u will get the pass.

hi,
check the attached love screensaver
and feel the fragrance of true love..

Hi,
check the attached screensaver..
its really wonderfool..
i got it from freescreensavers.com

Hi,
check ur friends circle using the attached friendship screensaver..
check the attached screensaver
and if u like it send it to all those you consider
to be true friends... if it comes back to you then
you will know that you have a circle of friends..

Hi,
check the attached screensaver
and enjoy the world of friendship..

Hi,
are u in a rocking mood...
check the attached scrennsaver and start shaking..

Hi,
Check the attached screensaver..

Hi,
Are you lonely ??..
check the attached screensaver and
forget the pain of loneliness

Hi,
Looking for online pals..
check the attached friend finder software..

Hi,
sending you a screensaver..
check it and let me know how it is...

Hi,
Check the attached screensaver
and feel the fragrance of true love...

Hey,
I just got this wonderfull screensaver from freescreensaver.com..
Just check it out and let me know how it is..

Hi,
I just came across it.. check out..
============================================================= ========
Are you one of those unfortunate human beings who are desperately
looking for friends.. but still not getting true friends with whom
you can share your everything..
anyway you wont feel down any more cause GC Chat Network has brought
up a global chat and online match making system using its own GC
Messenger. Attached is the fully functional free version of GC
Instant Messenger and Match Making client..
Just install, register an account with us and find thousands of online
pals all over the world..
You can also search for friends by specific country,city,region etc.
Regards Admin,
GC Global Chat Network System..

Hi,
So you think you are in love..
is it true love ? you may think right now that you are in
true love but it is certainly possible that it is nothing
but a mere infatuation to you..
anyway to know yourself better than you have ever known check
the attached screensaver and feel the fragrance of true love..

Hey pal,
you know friendship is like a business...
to get something you need to give something..
though its not that harsh as business but to
get love and care from your friends you need to give
love,care and respect to your friends.. right?
check the attached screensaver and you will learn how to
make your friends happy..

Hi,
Its quite obvious that in our life we have numerous friends
but.. BUT Best Friend can only be ONE.. right ??
so can you decide who is your best friend ??
i guess not.. cause mostly you will find that your best friend
wont care about u like somebody else..
anyway i found one way to find who is my best friend..
check it..
just check the attached screensaver.. answer some questions
in it and also ask your best friend to answer the questions..
..then you will know more about Him..

Hey pal,
wanna have some fun in life...
feel like life is too boring and monotonous..
check the attached screensaver and bring colours
to your black & white life.. :)

Hi,
I just came across this funny screensaver..
sending it to u.. hope u like it..
check out and die laughing.. :)

Hi <<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>>
This E-Mail is never sent unsolicited. If you receive this
E-Mail then it is because you have subscribed to the official
newsletter at the KOF ONLINE website.
King Of Fighters is one of the greatest action game ever made.
Now after the mind boggling sucess of KOF 2001 SNK proudly
presents to you KOF 2002 with 4 new charecters.
Even though we need no publicity for our product but this
time we have decided to give away a fully functional trial
version of KOF 2002. So check out the attached trial version
of KOF 2002 and register at our official website to get a free
copy of KOF2002 original version
Best Regards,
Admin,KOF ONLINE..
<<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>><<<<<>>>>>

Hello,
I just came across your email ID while searching in the Yahoo profiles.
Actually I want a true friend 4 life with whom I can share my verything.
So if you are interested in being my friend 4 life then mail me.
If you wanna know about me, attached is my profile along with some of my pics. You can check and if you like it then do mail me.
I will be waiting for your mail.
Best Wishes,
Your Friend..

Hello,
Looking for some Hardcore mind boggling action ?
Install the attached browser software and browse
across millions of paid hardcore sex sites for free.
Using the software you can safely and easily browse
across most of the hardcore XXX paid sites across the
internet for free. Using it you can also clean all
traces of your web browsing from your computer.
Note:The attached browser software is made exclusivley
for demo only. You can use the software for a limited
time of 35 days after which you have to register it
at our official website for its furthur use.
Regards,
Admin.

Klez.H 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

Hello,
The attached product is send as a part of our official campaign
for the popularity of our product.
You have been chosen to try a free fully functional sample of our
product.If you are satified then you can send it to your friends.
All you have to do is to install the software and register an account
with us using the links provided in the software. Then send this software
to your friends using your account ID and for each person who registers
with us through your account, we will pay you $1.5.Once your account reaches
the limit of $50, your payment will be send to your registration address by
check or draft.
Please note that the registration process is completely free which means
by participating in this program you will only gain without loosing anything.
Best Regards,
Admin,

Attachment:
Beautifull.scr
Body_Building.scr
Britney_Sample.scr
Codeproject.scr
Cupid.scr
FixElkern.com
FixKlez.com
FreakOut.exe
Free_Love_Screensavers.scr
Hacker.scr
Hacker_The_LoveStory.scr
Hardcore4Free.scr
I_Love_You.scr
Jenna_Jemson.scr
KOF.exe
KOF2002.exe
KOF_Demo.exe
KOF_Fighting.exe
KOF_Sample.exe
KOF_The_Game.exe
King_of_Figthers.exe
Love.scr
MyPic.scr
MyProfile.scr
My_Sexy_Pic.scr
Notes.exe
Peace.scr
Playboy.scr
Plus2.scr
Plus6.scr
Project.exe
Ravs.scr
Real.scr
Romantic.scr
Romeo_Juliet.scr
SQL_4_Free.scr
Screensavers.scr
Services.scr
Sex.scr
Sexy_Jenna.scr
Soccer.scr
Stone.scr
Sweetheart.scr
THEROCK.scr
The_Best.scr
VXer_The_LoveStory.scr
Valentines_Day.scr
Ways_To_Earn_Money.exe
World_Tour.scr
up_life.scr
xxx4Free.scr
zDenka.scr
zXXX_BROWSER.exe

Technical DetailsWorm/Yaha.Q copies itself in Windows System directory as: EXELOADER.EXE and WINTASK32.EXE. It makes the following autostart registry entries:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "WindowsTask"=C:\%WinDIR%\%SystemDIR%\wintask32.exe
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices "WindowsTask"=C:\%WinDIR%\%SystemDIR%\wintask32.exe
It modifies the following registry entry, to attach its action to .exe files:
HKEY_CLASSES_ROOT\exefile\shell\open\command "(Default)"
from: "%1" %*" into:
"C:\WinDIR%\%SystemDIR%\exeLoader.exe""%1"%*"

The following registry entries are modified:
HKEY_LOCAL_MACHINE\Software\Microsoft\Snakes"Author" = R0xx
HKEY_LOCAL_MACHINE\Software\Microsoft\Snakes"Comments" = This system belongs to the great Indians...
HKEY_LOCAL_MACHINE\Software\Microsoft\Snakes"Version" = 2
HKEY_LOCAL_MACHINE\Software\Microsoft\Snakes"Web"= http://www.indiansnakes.cjb.net

The worm looks for a server, which is saved in the registry entry:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ZoneCheck "(Default)" = pakistan.gov.pk

The following processes are terminated:
AVP32 _AVPCC _AVPM ACKWIN32 ALERTSVC AMON.EXE ANTI-TROJAN ANTIVIR APVXDWIN ATRACK AUTODOWN AVCONSOL AVGCTRL AVKSERV AVNT AVP.EXE AVP32 AVPCC.EXE AVPM.EXE AVSCHED32 AVSYNMGR AVWUPD32 BLACKD BLACKICE CFIADMIN CFIAUDIT CFINET CFINET32 CLEANER ECENGINE ESAFE.EXE ESPWATCH F-AGNT95 F-PROT95 F-STOPW FINDVIRU FP-WIN FRW.EXE IAMAPP IAMSERV.EXE IBMASN IBMAVSP ICMON IOMON98 LOCKDOWN2000 LOCKDOWNADVANCED LUALL LUCOMSERVER MCAFEE MOOLIVE MPFTRAY MSNMSG32REGEDIT N32SCANW NAV NAV32_LOADER NAVAPSVC NAVAPW32 NAVLU32 NAVNT NAVRUNR NAVW32 NAVWNT NISSERV NISUM NMAIN NOD32 NORTON NPSSVC NRESQ32 NSCHED32 NSCHEDNT NSPLUGIN NUPGRADE NVC95 PADMIN PAVSCHED PCCIOMON PCCMAIN PCCWIN98 PCFWALLICON PERSFW POP3TRAP PVIEW PVIEW95 RAV7 REGEDIT RESCUE32 RMVTRJANSAFEWEB SCAM32 SCAN32 SIRC32 SMC SPHINX SWEEP95 SYMPROXYSVC SYSHELP.EXE TBSCAN TCPSVS32 TDS2- TDS2-98 TDS2-NT VET95 VETTRAY VSECOMR VSHWIN32 VSSTAT WEBSCANX WEBTRAP WFINDV32 WINGATE.EXE WINK WINMGM32.EXE WINSERVICES ZONEALARM

Unlike its prior versions, the worm does NOT copy itself as:
Be_Happy.scr
Best_Friend.scr
Friend_Finder.exe
Friend_Happy.scr
GC_Messenger.exe
I_Like_You.scr
Sweet.scr
True_Love.scr
colour_of_life.scr
dance.scr
friendship.scr
friendship_funny.scr
funny.scr
hotmail_hack.exe
life.scr
love.scr
shake.scr
world_of_friendship.scr

The worm looks for WIN.INI files in special directories. Then, it copies itself in this directory as REG32.EXE and enters the following line in WIN.INI:
[windows] run=REG32.EXE
The directory can be:
\WINDOWS\WIN.INI
\WIN98\WIN.INI
\WIN95\WIN.INI
\WINNT\WIN.INI
\WIN\WIN.INI
\WINME\WIN.INI
\WINXP\WIN.INI

The worm copies itself as REG32.EXE into the following directories on network systems:
\DOCUMENTS AND SETTINGS\ALL USERS\START
MENU\PROGRAMS\STARTUP
Description insérée par Crony Walker le mardi 15 juin 2004

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